1172 lines
55 KiB
Python
1172 lines
55 KiB
Python
# ***************************************************************************
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# * *
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# * Copyright (c) 2015 - Przemo Firszt <przemo@firszt.eu> *
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# * Copyright (c) 2016 - Bernd Hahnebach <bernd@bimstatik.org> *
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# * *
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# * This program is free software; you can redistribute it and/or modify *
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# * it under the terms of the GNU Lesser General Public License (LGPL) *
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# * as published by the Free Software Foundation; either version 2 of *
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# * the License, or (at your option) any later version. *
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# * for detail see the LICENCE text file. *
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# * *
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# * This program is distributed in the hope that it will be useful, *
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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# * GNU Library General Public License for more details. *
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# * *
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# * You should have received a copy of the GNU Library General Public *
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# * License along with this program; if not, write to the Free Software *
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# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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# * USA *
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# * *
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# ***************************************************************************
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__title__ = "FemToolsCcx"
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__author__ = "Przemo Firszt, Bernd Hahnebach"
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__url__ = "http://www.freecadweb.org"
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## \addtogroup FEM
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# @{
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import os
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import sys
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import subprocess
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import FreeCAD
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import femtools.femutils as femutils
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from PySide import QtCore
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if FreeCAD.GuiUp:
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from PySide import QtGui
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import FemGui
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class FemToolsCcx(QtCore.QRunnable, QtCore.QObject):
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known_analysis_types = ["static", "frequency", "thermomech", "check"]
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finished = QtCore.Signal(int)
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## The constructor
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# @param analysis - analysis object to be used as the core object.
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# @param test_mode - True indicates that no real calculations will take place
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# so ccx binary is not required. Used by test module.
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# "__init__" tries to use current active analysis in analysis is left empty.
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# Raises exception if analysis is not set and there is no active analysis
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def __init__(self, analysis=None, solver=None, test_mode=False):
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QtCore.QRunnable.__init__(self)
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QtCore.QObject.__init__(self)
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## @var analysis
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# FEM analysis - the core object. Has to be present.
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# It's set to analysis passed in "__init__"
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# or set to current active analysis by default
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# if nothing has been passed to "__init__".
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self.analysis = None
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## @var solver
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# solver of the analysis. Used to store the active solver and analysis parameters
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self.solver = None
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if analysis:
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self.analysis = analysis
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if solver:
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# analysis and solver given
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self.solver = solver
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else:
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# analysis given, search for the solver
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self.find_solver()
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if not self.solver:
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raise Exception("FEM: No solver found!")
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else:
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if solver:
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# solver given, searche for the analysis
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self.solver = solver
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self.find_solver_analysis()
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if not self.analysis:
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raise Exception(
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"FEM: The solver was given as parameter, "
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"but no analysis for this solver was found!"
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)
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else:
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# neither analysis nor solver given, search both
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self.find_analysis()
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if not self.analysis:
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raise Exception(
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"FEM: No solver was given and either no active analysis "
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"or no analysis at all or more than one analysis found!"
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)
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self.find_solver()
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if not self.solver:
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raise Exception("FEM: No solver found!")
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# print(self.solver)
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# print(self.analysis)
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if self.analysis and self.solver:
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self.working_dir = ""
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self.ccx_binary = ""
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## @var base_name
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# base name of .inp/.frd file (without extension).
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# It is used to construct .inp file path that is passed to CalculiX ccx
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self.base_name = ""
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## @var results_present
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# boolean variable indicating if there are calculation results ready for use
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self.results_present = False
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if test_mode:
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self.test_mode = True
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self.ccx_binary_present = True
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else:
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self.test_mode = False
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self.ccx_binary_present = False
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self.result_object = None
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else:
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raise Exception(
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"FEM: Something went wrong, "
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"the exception should have been raised earlier!"
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)
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## Removes all result objects and result meshes from an analysis group
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# @param self The python object self
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def purge_results(self):
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from femresult.resulttools import purge_results as pr
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pr(self.analysis)
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## Resets mesh color, deformation and removes all result objects
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# if preferences to keep them is not set
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# @param self The python object self
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def reset_mesh_purge_results_checked(self):
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self.fem_prefs = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Fem/General")
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keep_results_on_rerun = self.fem_prefs.GetBool("KeepResultsOnReRun", False)
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if not keep_results_on_rerun:
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self.purge_results()
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## Resets mesh color, deformation and removes all result objects
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# @param self The python object self
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def reset_all(self):
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self.purge_results()
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def _get_several_member(self, obj_type):
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return femutils.get_several_member(self.analysis, obj_type)
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def find_analysis(self):
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if FreeCAD.GuiUp:
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self.analysis = FemGui.getActiveAnalysis()
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if self.analysis:
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return
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found_analysis = False
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for m in FreeCAD.ActiveDocument.Objects:
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if femutils.is_of_type(m, "Fem::FemAnalysis"):
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if not found_analysis:
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self.analysis = m
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found_analysis = True
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else:
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self.analysis = None # more than one analysis
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if self.analysis:
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if FreeCAD.GuiUp:
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FemGui.setActiveAnalysis(self.analysis)
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def find_solver_analysis(self):
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# get the analysis the solver is in
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if self.solver.getParentGroup():
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obj = self.solver.getParentGroup()
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if femutils.is_of_type(obj, "Fem::FemAnalysis"):
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self.analysis = obj
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if FreeCAD.GuiUp:
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FemGui.setActiveAnalysis(self.analysis)
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def find_solver(self):
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found_solver_for_use = False
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for m in self.analysis.Group:
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if femutils.is_of_type(m, "Fem::FemSolverCalculixCcxTools"):
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# we are going to explicitly check for the ccx tools solver type only,
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# thus it is possible to have lots of framework solvers inside the analysis anyway
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# for some methods no solver is needed (purge_results) --> solver could be none
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# analysis has one solver and no solver was set --> use the one solver
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# analysis has more than one solver and no solver was set --> use solver none
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# analysis has no solver --> use solver none
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if not found_solver_for_use:
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# no solver was found before
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self.solver = m
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found_solver_for_use = True
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else:
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# another solver was found --> We have more than one solver
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# we do not know which one to use, so we use none !
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self.solver = None
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FreeCAD.Console.PrintLog(
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"FEM: More than one solver in the analysis "
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"and no solver given to analyze. "
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"No solver is set!\n"
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)
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def update_objects(self):
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## @var mesh
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# mesh of the analysis. Used to generate .inp file and to show results
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self.mesh = None
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mesh, message = femutils.get_mesh_to_solve(self.analysis)
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if mesh is not None:
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self.mesh = mesh
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else:
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if FreeCAD.GuiUp:
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QtGui.QMessageBox.critical(None, "Missing prerequisite", message)
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raise Exception(message + "\n")
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# [{"Object":materials_linear}, {}, ...]
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# [{"Object":materials_nonlinear}, {}, ...]
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# [{"Object":fixed_constraints, "NodeSupports":bool}, {}, ...]
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# [{"Object":force_constraints, "NodeLoad":value}, {}, ...
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# [{"Object":pressure_constraints, "xxxxxxxx":value}, {}, ...]
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# [{"Object":temerature_constraints, "xxxxxxxx":value}, {}, ...]
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# [{"Object":heatflux_constraints, "xxxxxxxx":value}, {}, ...]
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# [{"Object":initialtemperature_constraints, "xxxxxxxx":value}, {}, ...]
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# [{"Object":beam_sections, "xxxxxxxx":value}, {}, ...]
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# [{"Object":beam_rotations, "xxxxxxxx":value}, {}, ...]
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# [{"Object":fluid_sections, "xxxxxxxx":value}, {}, ...]
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# [{"Object":shell_thicknesses, "xxxxxxxx":value}, {}, ...]
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# [{"Object":contact_constraints, "xxxxxxxx":value}, {}, ...]
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## @var materials_linear
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# list of linear materials from the analysis. Updated with update_objects
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self.materials_linear = (
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self._get_several_member("Fem::Material")
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+ self._get_several_member("Fem::MaterialReinforced")
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)
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## @var materials_nonlinear
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# list of nonlinear materials from the analysis. Updated with update_objects
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self.materials_nonlinear = self._get_several_member("Fem::MaterialMechanicalNonlinear")
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## @var fixed_constraints
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# list of fixed constraints from the analysis. Updated with update_objects
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self.fixed_constraints = self._get_several_member("Fem::ConstraintFixed")
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## @var selfweight_constraints
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# list of selfweight constraints from the analysis. Updated with update_objects
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self.selfweight_constraints = self._get_several_member("Fem::ConstraintSelfWeight")
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## @var force_constraints
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# list of force constraints from the analysis. Updated with update_objects
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self.force_constraints = self._get_several_member("Fem::ConstraintForce")
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## @var pressure_constraints
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# list of pressure constraints from the analysis. Updated with update_objects
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self.pressure_constraints = self._get_several_member("Fem::ConstraintPressure")
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## @var beam_sections
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# list of beam sections from the analysis. Updated with update_objects
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self.beam_sections = self._get_several_member("Fem::FemElementGeometry1D")
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## @var beam_rotations
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# list of beam rotations from the analysis. Updated with update_objects
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self.beam_rotations = self._get_several_member("Fem::FemElementRotation1D")
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## @var fluid_sections
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# list of fluid sections from the analysis. Updated with update_objects
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self.fluid_sections = self._get_several_member("Fem::FemElementFluid1D")
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## @var shell_thicknesses
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# list of shell thicknesses from the analysis. Updated with update_objects
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self.shell_thicknesses = self._get_several_member("Fem::FemElementGeometry2D")
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## @var displacement_constraints
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# list of displacements for the analysis. Updated with update_objects
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self.displacement_constraints = self._get_several_member("Fem::ConstraintDisplacement")
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## @var temperature_constraints
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# list of temperatures for the analysis. Updated with update_objects
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self.temperature_constraints = self._get_several_member("Fem::ConstraintTemperature")
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## @var heatflux_constraints
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# list of heatflux constraints for the analysis. Updated with update_objects
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self.heatflux_constraints = self._get_several_member("Fem::ConstraintHeatflux")
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## @var initialtemperature_constraints
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# list of initial temperatures for the analysis. Updated with update_objects
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self.initialtemperature_constraints = self._get_several_member(
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"Fem::ConstraintInitialTemperature"
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)
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## @var planerotation_constraints
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# list of plane rotation constraints from the analysis. Updated with update_objects
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self.planerotation_constraints = self._get_several_member("Fem::ConstraintPlaneRotation")
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## @var contact_constraints
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# list of contact constraints from the analysis. Updated with update_objects
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self.contact_constraints = self._get_several_member("Fem::ConstraintContact")
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## @var transform_constraints
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# list of transform constraints from the analysis. Updated with update_objects
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self.transform_constraints = self._get_several_member("Fem::ConstraintTransform")
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def check_prerequisites(self):
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from FreeCAD import Units
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message = ""
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# analysis
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if not self.analysis:
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message += "No active Analysis\n"
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if not self.working_dir:
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message += "Working directory not set\n"
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if not (os.path.isdir(self.working_dir)):
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message += (
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"Working directory \'{}\' doesn't exist."
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.format(self.working_dir)
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)
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# solver
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if not self.solver:
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message += "No solver object defined in the analysis\n"
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else:
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if self.solver.AnalysisType not in self.known_analysis_types:
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message += (
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"Unknown analysis type: {}\n"
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.format(self.solver.AnalysisType)
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)
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if self.solver.AnalysisType == "frequency":
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if not hasattr(self.solver, "EigenmodeHighLimit"):
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message += "Frequency analysis: Solver has no EigenmodeHighLimit.\n"
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elif not hasattr(self.solver, "EigenmodeLowLimit"):
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message += "Frequency analysis: Solver has no EigenmodeLowLimit.\n"
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elif not hasattr(self.solver, "EigenmodesCount"):
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message += "Frequency analysis: Solver has no EigenmodesCount.\n"
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if hasattr(self.solver, "MaterialNonlinearity") \
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and self.solver.MaterialNonlinearity == "nonlinear":
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if not self.materials_nonlinear:
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message += (
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"Solver is set to nonlinear materials, "
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"but there is no nonlinear material in the analysis.\n"
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)
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if self.solver.Proxy.Type == "Fem::FemSolverCalculixCcxTools" \
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and self.solver.GeometricalNonlinearity != "nonlinear":
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# nonlinear geometry --> should be set
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# https://forum.freecadweb.org/viewtopic.php?f=18&t=23101&p=180489#p180489
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message += (
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"Solver CalculiX triggers nonlinear geometry for nonlinear material, "
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"thus it should to be set too.\n"
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)
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# mesh
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if not self.mesh:
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message += "No mesh object defined in the analysis\n"
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if self.mesh:
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if self.mesh.FemMesh.VolumeCount == 0 \
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and self.mesh.FemMesh.FaceCount > 0 \
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and not self.shell_thicknesses:
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message += (
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"FEM mesh has no volume elements, "
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"either define a shell thicknesses or "
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"provide a FEM mesh with volume elements.\n"
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)
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if self.mesh.FemMesh.VolumeCount == 0 \
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and self.mesh.FemMesh.FaceCount == 0 \
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and self.mesh.FemMesh.EdgeCount > 0 \
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and not self.beam_sections \
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and not self.fluid_sections:
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message += (
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"FEM mesh has no volume and no shell elements, "
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"either define a beam/fluid section or provide "
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"a FEM mesh with volume elements.\n"
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)
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if self.mesh.FemMesh.VolumeCount == 0 \
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and self.mesh.FemMesh.FaceCount == 0 \
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and self.mesh.FemMesh.EdgeCount == 0:
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message += (
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"FEM mesh has neither volume nor shell or edge elements. "
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"Provide a FEM mesh with elements!\n"
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)
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# material linear and nonlinear
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if not self.materials_linear:
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message += "No material object defined in the analysis\n"
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has_no_references = False
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for m in self.materials_linear:
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if len(m["Object"].References) == 0:
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if has_no_references is True:
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message += (
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"More than one material has an empty references list "
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"(Only one empty references list is allowed!).\n"
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)
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has_no_references = True
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mat_ref_shty = ""
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for m in self.materials_linear:
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ref_shty = femutils.get_refshape_type(m["Object"])
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if not mat_ref_shty:
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mat_ref_shty = ref_shty
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if mat_ref_shty and ref_shty and ref_shty != mat_ref_shty:
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# mat_ref_shty could be empty in one material
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# only the not empty ones should have the same shape type
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message += (
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"Some material objects do not have the same reference shape type "
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"(all material objects must have the same reference shape type, "
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"at the moment).\n"
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)
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for m in self.materials_linear:
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mat_map = m["Object"].Material
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mat_obj = m["Object"]
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if mat_obj.Category == "Solid":
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if "YoungsModulus" in mat_map:
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# print(Units.Quantity(mat_map["YoungsModulus"]).Value)
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if not Units.Quantity(mat_map["YoungsModulus"]).Value:
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message += "Value of YoungsModulus is set to 0.0.\n"
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else:
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message += "No YoungsModulus defined for at least one material.\n"
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if "PoissonRatio" not in mat_map:
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# PoissonRatio is allowed to be 0.0 (in ccx), but it should be set anyway.
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message += "No PoissonRatio defined for at least one material.\n"
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if self.solver.AnalysisType == "frequency" or self.selfweight_constraints:
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if "Density" not in mat_map:
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message += "No Density defined for at least one material.\n"
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if self.solver.AnalysisType == "thermomech":
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if "ThermalConductivity" in mat_map:
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if not Units.Quantity(mat_map["ThermalConductivity"]).Value:
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message += "Value of ThermalConductivity is set to 0.0.\n"
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else:
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message += (
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"Thermomechanical analysis: No ThermalConductivity defined "
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"for at least one material.\n"
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)
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if "ThermalExpansionCoefficient" not in mat_map and mat_obj.Category == "Solid":
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message += (
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"Thermomechanical analysis: No ThermalExpansionCoefficient defined "
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"for at least one material.\n" # allowed to be 0.0 (in ccx)
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)
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if "SpecificHeat" not in mat_map:
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message += (
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"Thermomechanical analysis: No SpecificHeat "
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"defined for at least one material.\n" # allowed to be 0.0 (in ccx)
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)
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if femutils.is_of_type(mat_obj, "Fem::MaterialReinforced"):
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# additional tests for reinforced materials,
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# they are needed for result calculation not for ccx analysis
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mat_map_m = mat_obj.Material
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if "AngleOfFriction" in mat_map_m:
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# print(Units.Quantity(mat_map_m["AngleOfFriction"]).Value)
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if not Units.Quantity(mat_map_m["AngleOfFriction"]).Value:
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message += (
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"Value of AngleOfFriction is set to 0.0 "
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"for the matrix of a reinforced material.\n"
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)
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else:
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message += (
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"No AngleOfFriction defined for the matrix "
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"of at least one reinforced material.\n"
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)
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if "CompressiveStrength" in mat_map_m:
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# print(Units.Quantity(mat_map_m["CompressiveStrength"]).Value)
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if not Units.Quantity(mat_map_m["CompressiveStrength"]).Value:
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message += (
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"Value of CompressiveStrength is set to 0.0 "
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"for the matrix of a reinforced material.\n"
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)
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else:
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message += (
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"No CompressiveStrength defined for the matrinx "
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"of at least one reinforced material.\n"
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)
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mat_map_r = mat_obj.Reinforcement
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if "YieldStrength" in mat_map_r:
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# print(Units.Quantity(mat_map_r["YieldStrength"]).Value)
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if not Units.Quantity(mat_map_r["YieldStrength"]).Value:
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message += (
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"Value of YieldStrength is set to 0.0 "
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"for the reinforcement of a reinforced material.\n"
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)
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else:
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message += (
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"No YieldStrength defined for the reinforcement "
|
|
"of at least one reinforced material.\n"
|
|
)
|
|
if len(self.materials_linear) == 1:
|
|
mobj = self.materials_linear[0]["Object"]
|
|
if hasattr(mobj, "References") and mobj.References:
|
|
FreeCAD.Console.PrintError(
|
|
"Only one material object, but this one has a reference shape. "
|
|
"The reference shape will be ignored.\n"
|
|
)
|
|
for m in self.materials_linear:
|
|
has_nonlinear_material = False
|
|
for nlm in self.materials_nonlinear:
|
|
if nlm["Object"].LinearBaseMaterial == m["Object"]:
|
|
if has_nonlinear_material is False:
|
|
has_nonlinear_material = True
|
|
else:
|
|
message += (
|
|
"At least two nonlinear materials use the same linear base material. "
|
|
"Only one nonlinear material for each linear material allowed.\n"
|
|
)
|
|
# which analysis needs which constraints
|
|
# no check in the regard of loads existence (constraint force, pressure, self weight)
|
|
# is done, because an analysis without loads at all is an valid analysis too
|
|
if self.solver.AnalysisType == "static":
|
|
if not (self.fixed_constraints or self.displacement_constraints):
|
|
message += (
|
|
"Static analysis: Neither constraint fixed nor "
|
|
"constraint displacement defined.\n"
|
|
)
|
|
if self.solver.AnalysisType == "thermomech":
|
|
if not self.initialtemperature_constraints:
|
|
if not self.fluid_sections:
|
|
message += "Thermomechanical analysis: No initial temperature defined.\n"
|
|
if len(self.initialtemperature_constraints) > 1:
|
|
message += "Thermomechanical analysis: Only one initial temperature is allowed.\n"
|
|
# constraints
|
|
# fixed
|
|
if self.fixed_constraints:
|
|
for c in self.fixed_constraints:
|
|
if len(c["Object"].References) == 0:
|
|
message += "At least one constraint fixed has an empty reference.\n"
|
|
# displacement
|
|
if self.displacement_constraints:
|
|
for di in self.displacement_constraints:
|
|
if len(di["Object"].References) == 0:
|
|
message += "At least one constraint displacement has an empty reference.\n"
|
|
# plane rotation
|
|
if self.planerotation_constraints:
|
|
for c in self.planerotation_constraints:
|
|
if len(c["Object"].References) == 0:
|
|
message += "At least one constraint plane rotation has an empty reference.\n"
|
|
# contact
|
|
if self.contact_constraints:
|
|
for c in self.contact_constraints:
|
|
if len(c["Object"].References) == 0:
|
|
message += "At least one constraint contact has an empty reference.\n"
|
|
# transform
|
|
if self.transform_constraints:
|
|
for c in self.transform_constraints:
|
|
if len(c["Object"].References) == 0:
|
|
message += "At least one constraint transform has an empty reference.\n"
|
|
# pressure
|
|
if self.pressure_constraints:
|
|
for c in self.pressure_constraints:
|
|
if len(c["Object"].References) == 0:
|
|
message += "At least one constraint pressure has an empty reference.\n"
|
|
# force
|
|
if self.force_constraints:
|
|
for c in self.force_constraints:
|
|
if len(c["Object"].References) == 0:
|
|
message += "At least one constraint force has an empty reference.\n"
|
|
# temperature
|
|
if self.temperature_constraints:
|
|
for c in self.temperature_constraints:
|
|
if len(c["Object"].References) == 0:
|
|
message += "At least one constraint temperature has an empty reference.\n"
|
|
# heat flux
|
|
if self.heatflux_constraints:
|
|
for c in self.heatflux_constraints:
|
|
if len(c["Object"].References) == 0:
|
|
message += "At least one constraint heat flux has an empty reference.\n"
|
|
# beam section
|
|
if self.beam_sections:
|
|
if self.shell_thicknesses:
|
|
# this needs to be checked only once either here or in shell_thicknesses
|
|
message += (
|
|
"Beam sections and shell thicknesses in one analysis "
|
|
"is not supported at the moment.\n"
|
|
)
|
|
if self.fluid_sections:
|
|
# this needs to be checked only once either here or in shell_thicknesses
|
|
message += (
|
|
"Beam sections and fluid sections in one analysis "
|
|
"is not supported at the moment.\n"
|
|
)
|
|
has_no_references = False
|
|
for b in self.beam_sections:
|
|
if len(b["Object"].References) == 0:
|
|
if has_no_references is True:
|
|
message += (
|
|
"More than one beam section has an empty references "
|
|
"list (Only one empty references list is allowed!).\n"
|
|
)
|
|
has_no_references = True
|
|
if self.mesh:
|
|
if self.mesh.FemMesh.FaceCount > 0 or self.mesh.FemMesh.VolumeCount > 0:
|
|
message += (
|
|
"Beam sections defined but FEM mesh has volume or shell elements.\n"
|
|
)
|
|
if self.mesh.FemMesh.EdgeCount == 0:
|
|
message += (
|
|
"Beam sections defined but FEM mesh has no edge elements.\n"
|
|
)
|
|
if len(self.beam_rotations) > 1:
|
|
message += (
|
|
"Multiple beam rotations in one analysis are not supported at the moment.\n"
|
|
)
|
|
# beam rotations
|
|
if self.beam_rotations and not self.beam_sections:
|
|
message += "Beam rotations in the analysis but no beam sections defined.\n"
|
|
# shell thickness
|
|
if self.shell_thicknesses:
|
|
has_no_references = False
|
|
for s in self.shell_thicknesses:
|
|
if len(s["Object"].References) == 0:
|
|
if has_no_references is True:
|
|
message += (
|
|
"More than one shell thickness has an empty references "
|
|
"list (Only one empty references list is allowed!).\n"
|
|
)
|
|
has_no_references = True
|
|
if self.mesh:
|
|
if self.mesh.FemMesh.VolumeCount > 0:
|
|
message += "Shell thicknesses defined but FEM mesh has volume elements.\n"
|
|
if self.mesh.FemMesh.FaceCount == 0:
|
|
message += "Shell thicknesses defined but FEM mesh has no shell elements.\n"
|
|
# fluid section
|
|
if self.fluid_sections:
|
|
if not self.selfweight_constraints:
|
|
message += (
|
|
"A fluid network analysis requires self weight constraint to be applied\n"
|
|
)
|
|
if self.solver.AnalysisType != "thermomech":
|
|
message += "A fluid network analysis can only be done in a thermomech analysis\n"
|
|
has_no_references = False
|
|
for f in self.fluid_sections:
|
|
if len(f["Object"].References) == 0:
|
|
if has_no_references is True:
|
|
message += (
|
|
"More than one fluid section has an empty references list "
|
|
"(Only one empty references list is allowed!).\n"
|
|
)
|
|
has_no_references = True
|
|
if self.mesh:
|
|
if self.mesh.FemMesh.FaceCount > 0 or self.mesh.FemMesh.VolumeCount > 0:
|
|
message += (
|
|
"Fluid sections defined but FEM mesh has volume or shell elements.\n"
|
|
)
|
|
if self.mesh.FemMesh.EdgeCount == 0:
|
|
message += "Fluid sections defined but FEM mesh has no edge elements.\n"
|
|
return message
|
|
|
|
## Sets base_name
|
|
# @param self The python object self
|
|
# @param base_name base name of .inp/.frd file (without extension).
|
|
# It is used to construct .inp file path that is passed to CalculiX ccx
|
|
def set_base_name(self, base_name=None):
|
|
if base_name is None:
|
|
self.base_name = ""
|
|
else:
|
|
self.base_name = base_name
|
|
# Update inp file name
|
|
self.set_inp_file_name()
|
|
|
|
## Sets inp file name that is used to determine location and name of frd result file.
|
|
# Normally inp file name is set set by write_inp_file
|
|
# Can be used to read mock calculations file
|
|
# @param self The python object self
|
|
# @inp_file_name .inp file name. If empty the .inp file path is constructed
|
|
# from working_dir, base_name and string ".inp"
|
|
def set_inp_file_name(self, inp_file_name=None):
|
|
if inp_file_name is not None:
|
|
self.inp_file_name = inp_file_name
|
|
else:
|
|
self.inp_file_name = os.path.join(self.working_dir, (self.base_name + ".inp"))
|
|
|
|
## Sets working dir for solver execution.
|
|
# Called with no working_dir uses WorkingDir from FEM preferences
|
|
# @param self The python object self
|
|
# param_working_dir directory to be used for writing
|
|
# solver input file or files and executing solver
|
|
def setup_working_dir(self, param_working_dir=None, create=False):
|
|
self.working_dir = ""
|
|
# try to use given working dir or overwrite with solver working dir
|
|
fem_general_prefs = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Fem/General")
|
|
if param_working_dir is not None:
|
|
self.working_dir = param_working_dir
|
|
if self.check_working_dir() is not True:
|
|
if create is True:
|
|
FreeCAD.Console.PrintMessage(
|
|
"Dir given as parameter \'{}\' doesn't exist.\n".format(self.working_dir)
|
|
)
|
|
else:
|
|
FreeCAD.Console.PrintError(
|
|
"Dir given as parameter \'{}\' doesn't exist "
|
|
"and create parameter is set to False.\n"
|
|
.format(self.working_dir)
|
|
)
|
|
self.working_dir = femutils.get_pref_working_dir(self.solver)
|
|
FreeCAD.Console.PrintMessage(
|
|
"Dir \'{}\' will be used instead.\n"
|
|
.format(self.working_dir)
|
|
)
|
|
elif fem_general_prefs.GetBool("OverwriteSolverWorkingDirectory", True) is False:
|
|
self.working_dir = self.solver.WorkingDir
|
|
if self.check_working_dir() is not True:
|
|
FreeCAD.Console.PrintError(
|
|
"Dir from solver object \'{}\' doesn't exist.\n"
|
|
.format(self.working_dir)
|
|
)
|
|
self.working_dir = femutils.get_pref_working_dir(self.solver)
|
|
FreeCAD.Console.PrintMessage(
|
|
"Dir \'{}\' will be used instead.\n"
|
|
.format(self.working_dir)
|
|
)
|
|
else:
|
|
self.working_dir = femutils.get_pref_working_dir(self.solver)
|
|
|
|
# check working_dir exist, if not use a tmp dir and inform the user
|
|
if self.check_working_dir() is not True:
|
|
FreeCAD.Console.PrintError(
|
|
"Dir \'{}\' doesn't exist or cannot be created.\n"
|
|
.format(self.working_dir)
|
|
)
|
|
from femtools.femutils import getTempDir
|
|
self.working_dir = getTempDir(self.solver)
|
|
FreeCAD.Console.PrintMessage(
|
|
"Dir \'{}\' will be used instead.\n"
|
|
.format(self.working_dir)
|
|
)
|
|
|
|
# Update inp file name
|
|
self.set_inp_file_name()
|
|
|
|
def check_working_dir(self):
|
|
# check if working_dir exist, if not use a tmp dir and inform the user
|
|
# print(self.working_dir)
|
|
if os.path.isdir(self.working_dir):
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def write_inp_file(self):
|
|
import femsolver.calculix.writer as iw
|
|
self.inp_file_name = ""
|
|
try:
|
|
inp_writer = iw.FemInputWriterCcx(
|
|
self.analysis,
|
|
self.solver,
|
|
self.mesh,
|
|
self.materials_linear,
|
|
self.materials_nonlinear,
|
|
self.fixed_constraints,
|
|
self.displacement_constraints,
|
|
self.contact_constraints,
|
|
self.planerotation_constraints,
|
|
self.transform_constraints,
|
|
self.selfweight_constraints,
|
|
self.force_constraints,
|
|
self.pressure_constraints,
|
|
self.temperature_constraints,
|
|
self.heatflux_constraints,
|
|
self.initialtemperature_constraints,
|
|
self.beam_sections,
|
|
self.beam_rotations,
|
|
self.shell_thicknesses,
|
|
self.fluid_sections,
|
|
self.working_dir
|
|
)
|
|
self.inp_file_name = inp_writer.write_calculix_input_file()
|
|
except:
|
|
FreeCAD.Console.PrintError(
|
|
"Unexpected error when writing CalculiX input file: {}\n"
|
|
.format(sys.exc_info()[0])
|
|
)
|
|
raise
|
|
|
|
## Sets CalculiX ccx binary path and validates if the binary can be executed
|
|
# @param self The python object self
|
|
# @ccx_binary path to ccx binary, default is guessed:
|
|
# "bin/ccx" windows, "ccx" for other systems
|
|
# @ccx_binary_sig expected output form ccx when run empty.
|
|
# Default value is "CalculiX.exe -i jobname"
|
|
def setup_ccx(self, ccx_binary=None, ccx_binary_sig="CalculiX"):
|
|
error_title = "No CalculiX binary ccx"
|
|
error_message = ""
|
|
from platform import system
|
|
ccx_std_location = FreeCAD.ParamGet(
|
|
"User parameter:BaseApp/Preferences/Mod/Fem/Ccx"
|
|
).GetBool("UseStandardCcxLocation", True)
|
|
if ccx_std_location:
|
|
if system() == "Windows":
|
|
ccx_path = FreeCAD.getHomePath() + "bin/ccx.exe"
|
|
FreeCAD.ParamGet(
|
|
"User parameter:BaseApp/Preferences/Mod/Fem/Ccx"
|
|
).SetString("ccxBinaryPath", ccx_path)
|
|
self.ccx_binary = ccx_path
|
|
elif system() in ("Linux", "Darwin"):
|
|
p1 = subprocess.Popen(["which", "ccx"], stdout=subprocess.PIPE)
|
|
if p1.wait() == 0:
|
|
if sys.version_info.major >= 3:
|
|
ccx_path = p1.stdout.read().decode("utf8").split("\n")[0]
|
|
else:
|
|
ccx_path = p1.stdout.read().split("\n")[0]
|
|
elif p1.wait() == 1:
|
|
error_message = (
|
|
"FEM: CalculiX binary ccx not found in "
|
|
"standard system binary path. "
|
|
"Please install ccx or set path to binary "
|
|
"in FEM preferences tab CalculiX.\n"
|
|
)
|
|
if FreeCAD.GuiUp:
|
|
QtGui.QMessageBox.critical(None, error_title, error_message)
|
|
raise Exception(error_message)
|
|
self.ccx_binary = ccx_path
|
|
else:
|
|
if not ccx_binary:
|
|
self.ccx_prefs = FreeCAD.ParamGet(
|
|
"User parameter:BaseApp/Preferences/Mod/Fem/Ccx"
|
|
)
|
|
ccx_binary = self.ccx_prefs.GetString("ccxBinaryPath", "")
|
|
if not ccx_binary:
|
|
FreeCAD.ParamGet(
|
|
"User parameter:BaseApp/Preferences/Mod/Fem/Ccx"
|
|
).SetBool("UseStandardCcxLocation", True)
|
|
error_message = (
|
|
"FEM: CalculiX binary ccx path not set at all. "
|
|
"The use of standard path was activated in "
|
|
"FEM preferences tab CalculiX. Please try again!\n"
|
|
)
|
|
if FreeCAD.GuiUp:
|
|
QtGui.QMessageBox.critical(None, error_title, error_message)
|
|
raise Exception(error_message)
|
|
self.ccx_binary = ccx_binary
|
|
|
|
startup_info = None
|
|
if system() == "Windows":
|
|
# Windows workaround to avoid blinking terminal window
|
|
startup_info = subprocess.STARTUPINFO()
|
|
startup_info.dwFlags = subprocess.STARTF_USESHOWWINDOW
|
|
ccx_stdout = None
|
|
ccx_stderr = None
|
|
try:
|
|
p = subprocess.Popen(
|
|
[self.ccx_binary],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE,
|
|
shell=False,
|
|
startupinfo=startup_info
|
|
)
|
|
ccx_stdout, ccx_stderr = p.communicate()
|
|
if ccx_binary_sig in str(ccx_stdout):
|
|
self.ccx_binary_present = True
|
|
else:
|
|
raise Exception("FEM: wrong ccx binary")
|
|
# since we raise an exception the try will fail and
|
|
# the exception later with the error popup will be raised
|
|
# TODO: I'm still able to break it.
|
|
# If user doesn't give a file but a path without a file or
|
|
# a file which is not a binary no exception at all is raised.
|
|
except OSError as e:
|
|
FreeCAD.Console.PrintError(str(e))
|
|
if e.errno == 2:
|
|
error_message = (
|
|
"FEM: CalculiX binary ccx \'{}\' not found. "
|
|
"Please set the CalculiX binary ccx path in "
|
|
"FEM preferences tab CalculiX.\n"
|
|
.format(ccx_binary)
|
|
)
|
|
if FreeCAD.GuiUp:
|
|
QtGui.QMessageBox.critical(None, error_title, error_message)
|
|
raise Exception(error_message)
|
|
except Exception as e:
|
|
FreeCAD.Console.PrintError(str(e))
|
|
error_message = (
|
|
"FEM: CalculiX ccx \'{}\' output \'{}\' doesn't "
|
|
"contain expected phrase \'{}\'. "
|
|
"There are some problems when running the ccx binary. "
|
|
"Check if ccx runs standalone without FreeCAD.\n"
|
|
.format(ccx_binary, ccx_stdout, ccx_binary_sig)
|
|
)
|
|
if FreeCAD.GuiUp:
|
|
QtGui.QMessageBox.critical(None, error_title, error_message)
|
|
raise Exception(error_message)
|
|
|
|
def start_ccx(self):
|
|
import multiprocessing
|
|
self.ccx_stdout = ""
|
|
self.ccx_stderr = ""
|
|
ont_backup = os.environ.get("OMP_NUM_THREADS")
|
|
self.ccx_prefs = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Fem/Ccx")
|
|
# If number of CPU's specified
|
|
num_cpu_pref = self.ccx_prefs.GetInt("AnalysisNumCPUs", 1)
|
|
if not ont_backup:
|
|
ont_backup = str(num_cpu_pref)
|
|
if num_cpu_pref > 1:
|
|
# If user picked a number use that instead
|
|
_env = os.putenv("OMP_NUM_THREADS", str(num_cpu_pref))
|
|
else:
|
|
_env = os.putenv("OMP_NUM_THREADS", str(multiprocessing.cpu_count()))
|
|
# change cwd because ccx may crash if directory has no write permission
|
|
# there is also a limit of the length of file names so jump to the document directory
|
|
cwd = QtCore.QDir.currentPath()
|
|
f = QtCore.QFileInfo(self.inp_file_name)
|
|
QtCore.QDir.setCurrent(f.path())
|
|
p = subprocess.Popen(
|
|
[self.ccx_binary, "-i ", f.baseName()],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE,
|
|
shell=False,
|
|
env=_env
|
|
)
|
|
self.ccx_stdout, self.ccx_stderr = p.communicate()
|
|
if sys.version_info.major >= 3:
|
|
self.ccx_stdout = self.ccx_stdout.decode()
|
|
self.ccx_stderr = self.ccx_stderr.decode()
|
|
os.putenv("OMP_NUM_THREADS", ont_backup)
|
|
QtCore.QDir.setCurrent(cwd)
|
|
return p.returncode
|
|
|
|
def get_ccx_version(self):
|
|
self.setup_ccx()
|
|
import re
|
|
from platform import system
|
|
startup_info = None
|
|
if system() == "Windows":
|
|
# Windows workaround to avoid blinking terminal window
|
|
startup_info = subprocess.STARTUPINFO()
|
|
startup_info.dwFlags = subprocess.STARTF_USESHOWWINDOW
|
|
ccx_stdout = None
|
|
ccx_stderr = None
|
|
# Now extract the version number
|
|
p = subprocess.Popen(
|
|
[self.ccx_binary, "-v"],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE,
|
|
shell=False,
|
|
startupinfo=startup_info
|
|
)
|
|
ccx_stdout, ccx_stderr = p.communicate()
|
|
if sys.version_info.major >= 3:
|
|
ccx_stdout = ccx_stdout.decode()
|
|
# ccx_stderr = ccx_stderr.decode()
|
|
m = re.search(r"(\d+).(\d+)", ccx_stdout)
|
|
return (int(m.group(1)), int(m.group(2)))
|
|
|
|
def ccx_run(self):
|
|
FreeCAD.Console.PrintMessage("Run CalculiX ...\n")
|
|
if self.test_mode:
|
|
FreeCAD.Console.PrintError("CalculiX can not be run if test_mode is True.\n")
|
|
return
|
|
self.setup_ccx()
|
|
if self.ccx_binary_present is False:
|
|
error_message = (
|
|
"FEM: CalculiX binary ccx \'{}\' not found. "
|
|
"Please set the CalculiX binary ccx path in FEM preferences tab CalculiX.\n"
|
|
.format(self.ccx_binary)
|
|
)
|
|
if FreeCAD.GuiUp:
|
|
QtGui.QMessageBox.critical(None, "No CalculiX binary ccx", error_message)
|
|
raise Exception(error_message)
|
|
progress_bar = FreeCAD.Base.ProgressIndicator()
|
|
progress_bar.start("Everything seams fine. CalculiX ccx will be executed ...", 0)
|
|
ret_code = 0
|
|
ret_code = self.start_ccx()
|
|
self.finished.emit(ret_code)
|
|
progress_bar.stop()
|
|
if ret_code or self.ccx_stderr:
|
|
if ret_code == 201 and self.solver.AnalysisType == "check":
|
|
FreeCAD.Console.PrintMessage(
|
|
"It seams we run into NOANALYSIS problem, "
|
|
"thus workaround for wrong exit code for *NOANALYSIS check "
|
|
"and set ret_code to 0.\n"
|
|
)
|
|
# https://forum.freecadweb.org/viewtopic.php?f=18&t=31303&start=10#p260743
|
|
ret_code = 0
|
|
else:
|
|
FreeCAD.Console.PrintError("CalculiX failed with exit code {}\n".format(ret_code))
|
|
FreeCAD.Console.PrintMessage("--------start of stderr-------\n")
|
|
FreeCAD.Console.PrintMessage(self.ccx_stderr)
|
|
FreeCAD.Console.PrintMessage("--------end of stderr---------\n")
|
|
FreeCAD.Console.PrintMessage("--------start of stdout-------\n")
|
|
FreeCAD.Console.PrintMessage(self.ccx_stdout)
|
|
FreeCAD.Console.PrintMessage("\n--------end of stdout---------\n")
|
|
FreeCAD.Console.PrintMessage("--------start problems---------\n")
|
|
self.has_no_material_assigned()
|
|
self.has_nonpositive_jacobians()
|
|
FreeCAD.Console.PrintMessage("\n--------end problems---------\n")
|
|
else:
|
|
FreeCAD.Console.PrintMessage("CalculiX finished without error.\n")
|
|
return ret_code
|
|
|
|
def run(self):
|
|
self.update_objects()
|
|
self.setup_working_dir()
|
|
message = self.check_prerequisites()
|
|
if message:
|
|
error_message = (
|
|
"CalculiX was not started due to missing prerequisites:\n{}\n"
|
|
.format(message)
|
|
)
|
|
FreeCAD.Console.PrintError(error_message)
|
|
if FreeCAD.GuiUp:
|
|
QtGui.QMessageBox.critical(
|
|
None,
|
|
"Missing prerequisite",
|
|
error_message
|
|
)
|
|
return False
|
|
else:
|
|
self.write_inp_file()
|
|
if self.inp_file_name == "":
|
|
error_message = "Error on writing CalculiX input file.\n"
|
|
FreeCAD.Console.PrintError(error_message)
|
|
if FreeCAD.GuiUp:
|
|
QtGui.QMessageBox.critical(
|
|
None,
|
|
"Error",
|
|
error_message
|
|
)
|
|
return False
|
|
else:
|
|
FreeCAD.Console.PrintMessage(
|
|
"Writing CalculiX input file completed.\n"
|
|
)
|
|
ret_code = self.ccx_run()
|
|
if ret_code != 0:
|
|
error_message = (
|
|
"CalculiX finished with error {}.\n"
|
|
.format(ret_code)
|
|
)
|
|
FreeCAD.Console.PrintError(error_message)
|
|
if FreeCAD.GuiUp:
|
|
QtGui.QMessageBox.critical(
|
|
None,
|
|
"Error",
|
|
error_message
|
|
)
|
|
return False
|
|
else:
|
|
self.load_results()
|
|
# TODO: output an error message if there where problems reading the results
|
|
return True
|
|
|
|
def has_no_material_assigned(self):
|
|
if " *ERROR in calinput: no material was assigned" in self.ccx_stdout:
|
|
without_material_elements = []
|
|
without_material_elemnodes = []
|
|
for line in self.ccx_stdout.splitlines():
|
|
if "to element" in line:
|
|
# print(line)
|
|
# print(line.split())
|
|
non_mat_ele = int(line.split()[2])
|
|
# print(non_mat_ele)
|
|
if non_mat_ele not in without_material_elements:
|
|
without_material_elements.append(non_mat_ele)
|
|
for e in without_material_elements:
|
|
for n in self.mesh.FemMesh.getElementNodes(e):
|
|
without_material_elemnodes.append(n)
|
|
without_material_elements = sorted(without_material_elements)
|
|
without_material_elemnodes = sorted(without_material_elemnodes)
|
|
command_for_withoutmatnodes = (
|
|
"without_material_elemnodes = {}"
|
|
.format(without_material_elemnodes)
|
|
)
|
|
command_to_highlight = (
|
|
"Gui.ActiveDocument.{}.HighlightedNodes = without_material_elemnodes"
|
|
.format(self.mesh.Name)
|
|
)
|
|
# some output for the user
|
|
FreeCAD.Console.PrintError(
|
|
"\n\nCalculiX returned an error due to elements without materials.\n"
|
|
)
|
|
FreeCAD.Console.PrintMessage(
|
|
"without_material_elements = {}\n"
|
|
.format(without_material_elements)
|
|
)
|
|
FreeCAD.Console.PrintMessage(command_for_withoutmatnodes + "\n")
|
|
if FreeCAD.GuiUp:
|
|
import FreeCADGui
|
|
# with this the list without_material_elemnodes
|
|
# will be available for further user interaction
|
|
FreeCADGui.doCommand(command_for_withoutmatnodes)
|
|
FreeCAD.Console.PrintMessage("\n")
|
|
FreeCADGui.doCommand(command_to_highlight)
|
|
FreeCAD.Console.PrintMessage(
|
|
"\nFollowing some commands to copy. "
|
|
"They will highlight the elements without materials "
|
|
"or to reset the highlighted nodes:\n"
|
|
)
|
|
FreeCAD.Console.PrintMessage(command_to_highlight + "\n")
|
|
# command to reset the Highlighted Nodes
|
|
FreeCAD.Console.PrintMessage(
|
|
"Gui.ActiveDocument.{}.HighlightedNodes = []\n\n"
|
|
.format(self.mesh.Name)
|
|
)
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def has_nonpositive_jacobians(self):
|
|
if "*ERROR in e_c3d: nonpositive jacobian" in self.ccx_stdout:
|
|
nonpositive_jacobian_elements = []
|
|
nonpositive_jacobian_elenodes = []
|
|
for line in self.ccx_stdout.splitlines():
|
|
if "determinant in element" in line:
|
|
# print(line)
|
|
# print(line.split())
|
|
non_posjac_ele = int(line.split()[3])
|
|
# print(non_posjac_ele)
|
|
if non_posjac_ele not in nonpositive_jacobian_elements:
|
|
nonpositive_jacobian_elements.append(non_posjac_ele)
|
|
for e in nonpositive_jacobian_elements:
|
|
for n in self.mesh.FemMesh.getElementNodes(e):
|
|
nonpositive_jacobian_elenodes.append(n)
|
|
nonpositive_jacobian_elements = sorted(nonpositive_jacobian_elements)
|
|
nonpositive_jacobian_elenodes = sorted(nonpositive_jacobian_elenodes)
|
|
command_for_nonposjacnodes = (
|
|
"nonpositive_jacobian_elenodes = {}"
|
|
.format(nonpositive_jacobian_elenodes)
|
|
)
|
|
command_to_highlight = (
|
|
"Gui.ActiveDocument.{}.HighlightedNodes = nonpositive_jacobian_elenodes"
|
|
.format(self.mesh.Name)
|
|
)
|
|
# some output for the user
|
|
FreeCAD.Console.PrintError(
|
|
"\n\nCalculiX returned an error due to nonpositive jacobian elements.\n"
|
|
)
|
|
FreeCAD.Console.PrintMessage(
|
|
"nonpositive_jacobian_elements = {}\n"
|
|
.format(nonpositive_jacobian_elements)
|
|
)
|
|
FreeCAD.Console.PrintMessage(command_for_nonposjacnodes + "\n")
|
|
if FreeCAD.GuiUp:
|
|
import FreeCADGui
|
|
# with this the list nonpositive_jacobian_elenodes
|
|
# will be available for further user interaction
|
|
FreeCADGui.doCommand(command_for_nonposjacnodes)
|
|
FreeCAD.Console.PrintMessage("\n")
|
|
FreeCADGui.doCommand(command_to_highlight)
|
|
FreeCAD.Console.PrintMessage(
|
|
"\nFollowing some commands to copy. "
|
|
"They highlight the nonpositive jacobians "
|
|
"or to reset the highlighted nodes:\n"
|
|
)
|
|
FreeCAD.Console.PrintMessage(command_to_highlight + "\n")
|
|
# command to reset the Highlighted Nodes
|
|
FreeCAD.Console.PrintMessage(
|
|
"Gui.ActiveDocument.{}.HighlightedNodes = []\n\n"
|
|
.format(self.mesh.Name)
|
|
)
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def load_results(self):
|
|
FreeCAD.Console.PrintMessage("We will load the ccx frd and dat result file.\n")
|
|
self.results_present = False
|
|
self.load_results_ccxfrd()
|
|
self.load_results_ccxdat()
|
|
|
|
## Load results of ccx calculations from .frd file.
|
|
# @param self The python object self
|
|
def load_results_ccxfrd(self):
|
|
import feminout.importCcxFrdResults as importCcxFrdResults
|
|
frd_result_file = os.path.splitext(self.inp_file_name)[0] + ".frd"
|
|
if os.path.isfile(frd_result_file):
|
|
importCcxFrdResults.importFrd(frd_result_file, self.analysis, "CCX_")
|
|
for m in self.analysis.Group:
|
|
if m.isDerivedFrom("Fem::FemResultObject"):
|
|
self.results_present = True
|
|
break
|
|
else:
|
|
if self.solver.AnalysisType == "check":
|
|
for m in self.analysis.Group:
|
|
if m.isDerivedFrom("Fem::FemMeshObjectPython"):
|
|
# we have no result object but a mesh object
|
|
# this happens in NOANALYSIS mode
|
|
break
|
|
else:
|
|
FreeCAD.Console.PrintError("FEM: No result object in active Analysis.\n")
|
|
else:
|
|
raise Exception("FEM: No results found at {}!".format(frd_result_file))
|
|
|
|
## Load results of ccx calculations from .dat file.
|
|
# @param self The python object self
|
|
def load_results_ccxdat(self):
|
|
import feminout.importCcxDatResults as importCcxDatResults
|
|
dat_result_file = os.path.splitext(self.inp_file_name)[0] + ".dat"
|
|
if os.path.isfile(dat_result_file):
|
|
mode_frequencies = importCcxDatResults.import_dat(dat_result_file, self.analysis)
|
|
else:
|
|
raise Exception("FEM: No .dat results found at {}!".format(dat_result_file))
|
|
if mode_frequencies:
|
|
# print(mode_frequencies)
|
|
for m in self.analysis.Group:
|
|
if m.isDerivedFrom("Fem::FemResultObject") and m.Eigenmode > 0:
|
|
for mf in mode_frequencies:
|
|
if m.Eigenmode == mf["eigenmode"]:
|
|
m.EigenmodeFrequency = mf["frequency"]
|
|
|
|
|
|
class CcxTools(FemToolsCcx):
|
|
|
|
def __init__(self, solver=None):
|
|
FemToolsCcx.__init__(self, None, solver)
|
|
|
|
## @}
|