170 lines
6.1 KiB
Python
170 lines
6.1 KiB
Python
# ***************************************************************************
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# * Copyright (c) 2021 Bernd Hahnebach <bernd@bimstatik.org> *
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# * *
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# * This file is part of the FreeCAD CAx development system. *
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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__ = "FreeCAD FEM solver Mystran tasks"
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__author__ = "Bernd Hahnebach"
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__url__ = "https://www.freecadweb.org"
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## \addtogroup FEM
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# @{
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import os
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import os.path
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import subprocess
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import FreeCAD
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try:
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import hfcMystranNeuIn
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result_reading = True
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except Exception:
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FreeCAD.Console.PrintWarning("Module to read results not found.\n")
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result_reading = False
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from . import writer
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from .. import run
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from .. import settings
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from femmesh import meshsetsgetter
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from femtools import femutils
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from femtools import membertools
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_inputFileName = None
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class Check(run.Check):
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def run(self):
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self.pushStatus("Checking analysis member...\n")
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self.check_mesh_exists()
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self.check_material_exists()
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self.check_material_single() # no multiple material
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self.check_geos_beamsection_single() # no multiple beamsection
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self.check_geos_shellthickness_single() # no multiple shellsection
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self.check_geos_beamsection_and_shellthickness() # either beams or shells
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class Prepare(run.Prepare):
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def run(self):
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global _inputFileName
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self.pushStatus("Preparing solver input...\n")
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# get mesh set data
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# TODO see calculix tasks get mesh set data
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mesh_obj = membertools.get_mesh_to_solve(self.analysis)[0] # pre check done already
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meshdatagetter = meshsetsgetter.MeshSetsGetter(
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self.analysis,
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self.solver,
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mesh_obj,
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membertools.AnalysisMember(self.analysis),
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)
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meshdatagetter.get_mesh_sets()
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# write solver input
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w = writer.FemInputWriterMystran(
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self.analysis,
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self.solver,
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mesh_obj,
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meshdatagetter.member,
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self.directory,
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)
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path = w.write_solver_input()
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# report to user if task succeeded
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if path != "":
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self.pushStatus("Writing solver input completed.")
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else:
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self.pushStatus("Writing solver input failed.")
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self.fail()
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_inputFileName = os.path.splitext(os.path.basename(path))[0]
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class Solve(run.Solve):
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def run(self):
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self.pushStatus("Executing solver...\n")
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infile = _inputFileName + ".bdf"
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# get solver binary
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self.pushStatus("Get solver binary...\n")
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binary = settings.get_binary("Mystran")
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if binary is None:
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self.fail() # a print has been made in settings module
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# run solver
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self.pushStatus("Executing solver...\n")
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self._process = subprocess.Popen(
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args=[binary, infile], # pass empty param fails! [binary, "", infile]
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cwd=self.directory,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE
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)
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self.signalAbort.add(self._process.terminate)
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self._process.communicate()
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self.signalAbort.remove(self._process.terminate)
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# for chatching the output see CalculiX or Elmer solver tasks module
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class Results(run.Results):
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def run(self):
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prefs = FreeCAD.ParamGet(
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"User parameter:BaseApp/Preferences/Mod/Fem/General")
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if not prefs.GetBool("KeepResultsOnReRun", False):
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self.purge_results()
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if result_reading is True:
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self.load_results()
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def purge_results(self):
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self.pushStatus("Purge existing results...\n")
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# TODO see calculix result tasks
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for m in membertools.get_member(self.analysis, "Fem::FemResultObject"):
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if femutils.is_of_type(m.Mesh, "Fem::MeshResult"):
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self.analysis.Document.removeObject(m.Mesh.Name)
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self.analysis.Document.removeObject(m.Name)
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self.analysis.Document.recompute()
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def load_results(self):
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self.pushStatus("Import new results...\n")
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neu_result_file = os.path.join(self.directory, _inputFileName + ".NEU")
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if os.path.isfile(neu_result_file):
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hfcMystranNeuIn.import_neu(neu_result_file)
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# Workaround to move result object into analysis
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for o in self.analysis.Document.Objects:
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if o.Name == "Displacement0":
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self.analysis.addObject(o)
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break
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else:
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# TODO: use solver framework status message system
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FreeCAD.Console.PrintError(
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"FEM: No results found at {}!\n"
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.format(neu_result_file)
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)
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self.fail()
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## @}
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