547 lines
23 KiB
Python
547 lines
23 KiB
Python
# ***************************************************************************
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# * *
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# * Copyright (c) 2013 - Joachim Zettler *
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# * Copyright (c) 2013 - Juergen Riegel <FreeCAD@juergen-riegel.net> *
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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__ = "FreeCAD Calculix library"
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__author__ = "Juergen Riegel , Michael Hindley, Bernd Hahnebach"
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__url__ = "http://www.freecadweb.org"
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## @package importCcxFrdResults
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# \ingroup FEM
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# \brief FreeCAD Calculix FRD Reader for FEM workbench
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import FreeCAD
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import os
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########## generic FreeCAD import and export methods ##########
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if open.__module__ == '__builtin__':
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# because we'll redefine open below (Python2)
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pyopen = open
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elif open.__module__ == 'io':
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# because we'll redefine open below (Python3)
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pyopen = open
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def open(filename):
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"called when freecad opens a file"
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docname = os.path.splitext(os.path.basename(filename))[0]
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insert(filename, docname)
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def insert(filename, docname):
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"called when freecad wants to import a file"
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try:
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doc = FreeCAD.getDocument(docname)
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except NameError:
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doc = FreeCAD.newDocument(docname)
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FreeCAD.ActiveDocument = doc
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importFrd(filename)
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########## module specific methods ##########
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def importFrd(filename, analysis=None, result_name_prefix=None):
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import importToolsFem
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import ObjectsFem
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if result_name_prefix is None:
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result_name_prefix = ''
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m = readResult(filename)
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result_mesh_object = None
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if len(m['Nodes']) > 0:
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if analysis:
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analysis_object = analysis
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mesh = importToolsFem.make_femmesh(m)
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result_mesh_object = ObjectsFem.makeMeshResult(FreeCAD.ActiveDocument, 'Result_mesh')
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result_mesh_object.FemMesh = mesh
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positions = []
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for k, v in m['Nodes'].items():
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positions.append(v)
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p_x_max, p_y_max, p_z_max = map(max, zip(*positions))
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p_x_min, p_y_min, p_z_min = map(min, zip(*positions))
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x_span = abs(p_x_max - p_x_min)
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y_span = abs(p_y_max - p_y_min)
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z_span = abs(p_z_max - p_z_min)
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span = max(x_span, y_span, z_span)
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number_of_increments = len(m['Results'])
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for result_set in m['Results']:
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eigenmode_number = result_set['number']
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step_time = result_set['time']
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step_time = round(step_time, 2)
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if eigenmode_number > 0:
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results_name = result_name_prefix + 'mode_' + str(eigenmode_number) + '_results'
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elif number_of_increments > 1:
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results_name = result_name_prefix + 'time_' + str(step_time) + '_results'
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else:
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results_name = result_name_prefix + 'results'
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results = ObjectsFem.makeResultMechanical(FreeCAD.ActiveDocument, results_name)
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results.Mesh = result_mesh_object
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results = importToolsFem.fill_femresult_mechanical(results, result_set, span)
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if analysis:
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analysis_object.addObject(results)
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if FreeCAD.GuiUp:
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if analysis:
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import FemGui
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FemGui.setActiveAnalysis(analysis_object)
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FreeCAD.ActiveDocument.recompute()
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else:
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FreeCAD.Console.PrintError('Problem on frd file import. No nodes found in frd file.\n')
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# read a calculix result file and extract the nodes, displacement vectors and stress values.
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def readResult(frd_input):
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print('Read results from: ' + frd_input)
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inout_nodes = []
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inout_nodes_file = frd_input.rsplit('.', 1)[0] + '_inout_nodes.txt'
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if os.path.exists(inout_nodes_file):
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print('Read special 1DFlow nodes data form: ' + inout_nodes_file)
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f = pyopen(inout_nodes_file, "r")
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lines = f.readlines()
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for line in lines:
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a = line.split(',')
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inout_nodes.append(a)
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f.close()
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print(inout_nodes)
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frd_file = pyopen(frd_input, "r")
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nodes = {}
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elements_hexa8 = {}
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elements_penta6 = {}
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elements_tetra4 = {}
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elements_tetra10 = {}
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elements_penta15 = {}
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elements_hexa20 = {}
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elements_tria3 = {}
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elements_tria6 = {}
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elements_quad4 = {}
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elements_quad8 = {}
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elements_seg2 = {}
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elements_seg3 = {}
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results = []
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mode_results = {}
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mode_disp = {}
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mode_stress = {}
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mode_stressv = {}
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mode_strain = {}
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mode_peeq = {}
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mode_temp = {}
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mode_massflow = {}
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mode_networkpressure = {}
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mode_disp_found = False
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nodes_found = False
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mode_stress_found = False
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mode_strain_found = False
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mode_peeq_found = False
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mode_temp_found = False
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mode_massflow_found = False
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mode_networkpressure_found = False
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mode_time_found = False
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elements_found = False
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input_continues = False
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eigenmode = 0
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elem = -1
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elemType = 0
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timestep = 0
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timetemp = 0
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for line in frd_file:
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# Check if we found nodes section
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if line[4:6] == "2C":
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nodes_found = True
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# first lets extract the node and coordinate information from the results file
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if nodes_found and (line[1:3] == "-1"):
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elem = int(line[4:13])
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nodes_x = float(line[13:25])
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nodes_y = float(line[25:37])
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nodes_z = float(line[37:49])
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nodes[elem] = FreeCAD.Vector(nodes_x, nodes_y, nodes_z)
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# Check if we found nodes section
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if line[4:6] == "3C":
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elements_found = True
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# first lets extract element number
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if elements_found and (line[1:3] == "-1"):
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elem = int(line[4:13])
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elemType = int(line[14:18])
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# then import elements
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if elements_found and (line[1:3] == "-2"):
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# node order fits with node order in writeAbaqus() in FemMesh.cpp
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if elemType == 1:
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# C3D8 CalculiX --> hexa8 FreeCAD
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# N6, N7, N8, N5, N2, N3, N4, N1
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nd1 = int(line[3:13])
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nd2 = int(line[13:23])
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nd3 = int(line[23:33])
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nd4 = int(line[33:43])
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nd5 = int(line[43:53])
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nd6 = int(line[53:63])
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nd7 = int(line[63:73])
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nd8 = int(line[73:83])
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elements_hexa8[elem] = (nd6, nd7, nd8, nd5, nd2, nd3, nd4, nd1)
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elif elemType == 2:
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# C3D6 Calculix --> penta6 FreeCAD
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# N5, N6, N4, N2, N3, N1
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nd1 = int(line[3:13])
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nd2 = int(line[13:23])
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nd3 = int(line[23:33])
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nd4 = int(line[33:43])
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nd5 = int(line[43:53])
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nd6 = int(line[53:63])
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elements_penta6[elem] = (nd5, nd6, nd4, nd2, nd3, nd1)
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elif elemType == 3:
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# C3D4 Calculix --> tetra4 FreeCAD
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# N2, N1, N3, N4
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nd1 = int(line[3:13])
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nd2 = int(line[13:23])
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nd3 = int(line[23:33])
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nd4 = int(line[33:43])
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elements_tetra4[elem] = (nd2, nd1, nd3, nd4)
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elif elemType == 4 and input_continues is False:
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# first line
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# C3D20 Calculix --> hexa20 FreeCAD
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# N6, N7, N8, N5, N2, N3, N4, N1, N14, N15, N16, N13, N10, N11, N12, N9, N18, N19, N20, N17
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nd1 = int(line[3:13])
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nd2 = int(line[13:23])
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nd3 = int(line[23:33])
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nd4 = int(line[33:43])
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nd5 = int(line[43:53])
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nd6 = int(line[53:63])
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nd7 = int(line[63:73])
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nd8 = int(line[73:83])
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nd9 = int(line[83:93])
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nd10 = int(line[93:103])
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input_continues = True
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elif elemType == 4 and input_continues is True:
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# second line
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nd11 = int(line[3:13])
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nd12 = int(line[13:23])
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nd13 = int(line[23:33])
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nd14 = int(line[33:43])
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nd15 = int(line[43:53])
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nd16 = int(line[53:63])
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nd17 = int(line[63:73])
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nd18 = int(line[73:83])
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nd19 = int(line[83:93])
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nd20 = int(line[93:103])
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input_continues = False
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# CalculiX uses a different node order in input file *.inp and result file *.frd for hexa20 (C3D20)
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# according to Guido (the developer of ccx)
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# ccx (and thus the *.inp) follows the ABAQUS convention (documented in the ccx-documentation)
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# cgx (and thus the *.frd) follows the FAM2 convention (documented in the cgx-documentation)
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# FAM32 is from the company FEGS limited, maybe this company does not exist any more)
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# elements_hexa20[elem] = (nd6, nd7, nd8, nd5, nd2, nd3, nd4, nd1, nd14, nd15,
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# nd16, nd13, nd10, nd11, nd12, nd9, nd18, nd19, nd20, nd17)
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# elements_hexa20[elem] = (nd6, nd7, nd8, nd5, nd2, nd3, nd4, nd1, nd14, nd15,
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# nd16, nd13, nd18, nd19, nd20, nd17, nd10, nd11, nd12, nd9)
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# hexa20 import works with the following frd file node assignment
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elements_hexa20[elem] = (nd8, nd5, nd6, nd7, nd4, nd1, nd2, nd3, nd20, nd17,
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nd18, nd19, nd12, nd9, nd10, nd11, nd16, nd13, nd14, nd15)
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# print(elements_hexa20[elem])
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elif elemType == 5 and input_continues is False:
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# first line
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# C3D15 Calculix --> penta15 FreeCAD
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# N5, N6, N4, N2, N3, N1, N11, N12, N10, N8, N9, N7, N14, N15, N13
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nd1 = int(line[3:13])
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nd2 = int(line[13:23])
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nd3 = int(line[23:33])
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nd4 = int(line[33:43])
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nd5 = int(line[43:53])
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nd6 = int(line[53:63])
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nd7 = int(line[63:73])
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nd8 = int(line[73:83])
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nd9 = int(line[83:93])
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nd10 = int(line[93:103])
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input_continues = True
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elif elemType == 5 and input_continues is True:
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# second line
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nd11 = int(line[3:13])
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nd12 = int(line[13:23])
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nd13 = int(line[23:33])
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nd14 = int(line[33:43])
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nd15 = int(line[43:53])
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input_continues = False
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# CalculiX uses a different node order in input file *.inp and result file *.frd for penta15 (C3D15)
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# elements_penta15[elem] = (nd5, nd6, nd4, nd2, nd3, nd1, nd11, nd12, nd10, nd8,
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# nd9, nd7, nd14, nd15, nd13) # order of the *.inp file
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elements_penta15[elem] = (nd5, nd6, nd4, nd2, nd3, nd1, nd14, nd15, nd13, nd8,
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nd9, nd7, nd11, nd12, nd10)
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elif elemType == 6:
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# C3D10 Calculix --> tetra10 FreeCAD
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# N2, N1, N3, N4, N5, N7, N6, N9, N8, N10
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nd1 = int(line[3:13])
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nd2 = int(line[13:23])
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nd3 = int(line[23:33])
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nd4 = int(line[33:43])
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nd5 = int(line[43:53])
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nd6 = int(line[53:63])
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nd7 = int(line[63:73])
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nd8 = int(line[73:83])
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nd9 = int(line[83:93])
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nd10 = int(line[93:103])
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elements_tetra10[elem] = (nd2, nd1, nd3, nd4, nd5, nd7, nd6, nd9, nd8, nd10)
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elif elemType == 7:
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# S3 Calculix --> tria3 FreeCAD
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# N1, N2, N3
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nd1 = int(line[3:13])
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nd2 = int(line[13:23])
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nd3 = int(line[23:33])
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elements_tria3[elem] = (nd1, nd2, nd3)
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elif elemType == 8:
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# S6 CalculiX --> tria6 FreeCAD
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# N1, N2, N3, N4, N5, N6
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nd1 = int(line[3:13])
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nd2 = int(line[13:23])
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nd3 = int(line[23:33])
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nd4 = int(line[33:43])
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nd5 = int(line[43:53])
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nd6 = int(line[53:63])
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elements_tria6[elem] = (nd1, nd2, nd3, nd4, nd5, nd6)
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elif elemType == 9:
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# S4 CalculiX --> quad4 FreeCAD
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# N1, N2, N3, N4
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nd1 = int(line[3:13])
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nd2 = int(line[13:23])
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nd3 = int(line[23:33])
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nd4 = int(line[33:43])
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elements_quad4[elem] = (nd1, nd2, nd3, nd4)
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elif elemType == 10:
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# S8 CalculiX --> quad8 FreeCAD
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# N1, N2, N3, N4, N5, N6, N7, N8
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nd1 = int(line[3:13])
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nd2 = int(line[13:23])
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nd3 = int(line[23:33])
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nd4 = int(line[33:43])
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nd5 = int(line[43:53])
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nd6 = int(line[53:63])
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nd7 = int(line[63:73])
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nd8 = int(line[73:83])
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elements_quad8[elem] = (nd1, nd2, nd3, nd4, nd5, nd6, nd7, nd8)
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elif elemType == 11:
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# B31 CalculiX --> seg2 FreeCAD
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# N1, N2
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nd1 = int(line[3:13])
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nd2 = int(line[13:23])
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elements_seg2[elem] = (nd1, nd2)
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elif elemType == 12:
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# B32 CalculiX --> seg3 FreeCAD
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# Also D element element number
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# N1, N3 ,N2 Order in outpufile is 1,3,2
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nd1 = int(line[3:13])
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nd3 = int(line[13:23])
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nd2 = int(line[23:33])
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if inout_nodes:
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for i in range(len(inout_nodes)):
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if nd1 == int(inout_nodes[i][1]):
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elements_seg3[elem] = (int(inout_nodes[i][2]), nd3, nd1) # fluid inlet node numbering
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elif nd3 == int(inout_nodes[i][1]):
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elements_seg3[elem] = (nd1, int(inout_nodes[i][2]), nd3) # fluid outlet node numbering
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else:
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elements_seg3[elem] = (nd1, nd2, nd3) # normal node numbering for D, B32 elements
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# Check if we found new eigenmode
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if line[5:10] == "PMODE":
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eigenmode = int(line[30:36])
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# Check if we found displacement section
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if line[5:9] == "DISP":
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mode_disp_found = True
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# we found a displacement line in the frd file
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if mode_disp_found and (line[1:3] == "-1"):
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elem = int(line[4:13])
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mode_disp_x = float(line[13:25])
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mode_disp_y = float(line[25:37])
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mode_disp_z = float(line[37:49])
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mode_disp[elem] = FreeCAD.Vector(mode_disp_x, mode_disp_y, mode_disp_z)
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if line[5:11] == "STRESS":
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mode_stress_found = True
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# we found a stress line in the frd file
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if mode_stress_found and (line[1:3] == "-1"):
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elem = int(line[4:13])
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stress_1 = float(line[13:25])
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stress_2 = float(line[25:37])
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stress_3 = float(line[37:49])
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stress_4 = float(line[49:61])
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stress_5 = float(line[61:73])
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stress_6 = float(line[73:85])
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mode_stress[elem] = (stress_1, stress_2, stress_3, stress_4, stress_5, stress_6)
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mode_stressv[elem] = FreeCAD.Vector(stress_1, stress_2, stress_3)
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if line[5:13] == "TOSTRAIN":
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mode_strain_found = True
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# we found a strain line in the frd file
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if mode_strain_found and (line[1:3] == "-1"):
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elem = int(line[4:13])
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strain_1 = float(line[13:25])
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strain_2 = float(line[25:37])
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strain_3 = float(line[37:49])
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# strain_4 = float(line[49:61]) #Not used in vector
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# strain_5 = float(line[61:73])
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# strain_6 = float(line[73:85])
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mode_strain[elem] = FreeCAD.Vector(strain_1, strain_2, strain_3)
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if line[5:7] == "PE":
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mode_peeq_found = True
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# we found an equivalent plastic strain line in the frd file
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if mode_peeq_found and (line[1:3] == "-1"):
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elem = int(line[4:13])
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peeq = float(line[13:25])
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mode_peeq[elem] = (peeq)
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# Check if we found a time step
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if line[4:10] == "1PSTEP":
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mode_time_found = True
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if mode_time_found and (line[2:7] == "100CL"):
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timetemp = float(line[13:25])
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if timetemp > timestep:
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timestep = timetemp
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if line[5:11] == "NDTEMP":
|
|
mode_temp_found = True
|
|
# we found a temperatures line in the frd file
|
|
if mode_temp_found and (line[1:3] == "-1"):
|
|
elem = int(line[4:13])
|
|
temperature = float(line[13:25])
|
|
mode_temp[elem] = (temperature)
|
|
if line[5:11] == "MAFLOW":
|
|
mode_massflow_found = True
|
|
# we found a mass flow line in the frd file
|
|
if mode_massflow_found and (line[1:3] == "-1"):
|
|
elem = int(line[4:13])
|
|
massflow = float(line[13:25])
|
|
mode_massflow[elem] = (massflow * 1000) # convert units to kg/s from t/s
|
|
if inout_nodes:
|
|
for i in range(len(inout_nodes)):
|
|
if elem == int(inout_nodes[i][1]):
|
|
node = int(inout_nodes[i][2])
|
|
mode_massflow[node] = (massflow * 1000) # convert units to kg/s from t/s
|
|
if line[5:11] == "STPRES":
|
|
mode_networkpressure_found = True
|
|
# we found a network pressure line in the frd file
|
|
if mode_networkpressure_found and (line[1:3] == "-1"):
|
|
elem = int(line[4:13])
|
|
networkpressure = float(line[13:25])
|
|
mode_networkpressure[elem] = (networkpressure)
|
|
if inout_nodes:
|
|
for i in range(len(inout_nodes)):
|
|
if elem == int(inout_nodes[i][1]):
|
|
node = int(inout_nodes[i][2])
|
|
mode_networkpressure[node] = (networkpressure)
|
|
# Check for the end of a section
|
|
if line[1:3] == "-3":
|
|
if mode_disp_found:
|
|
mode_disp_found = False
|
|
|
|
if mode_stress_found:
|
|
mode_stress_found = False
|
|
|
|
if mode_strain_found:
|
|
mode_strain_found = False
|
|
|
|
if mode_peeq_found:
|
|
mode_peeq_found = False
|
|
|
|
if mode_temp_found:
|
|
mode_temp_found = False
|
|
|
|
if mode_time_found:
|
|
mode_time_found = False
|
|
|
|
if mode_massflow_found:
|
|
mode_massflow_found = False
|
|
|
|
if mode_networkpressure_found:
|
|
mode_networkpressure_found = False
|
|
|
|
if mode_disp and mode_stress and mode_strain and mode_temp:
|
|
mode_results = {}
|
|
mode_results['number'] = eigenmode
|
|
mode_results['disp'] = mode_disp
|
|
mode_results['stress'] = mode_stress
|
|
mode_results['stressv'] = mode_stressv
|
|
mode_results['strainv'] = mode_strain
|
|
mode_results['peeq'] = mode_peeq
|
|
mode_results['temp'] = mode_temp
|
|
mode_results['time'] = timestep
|
|
results.append(mode_results)
|
|
mode_disp = {}
|
|
mode_stress = {}
|
|
mode_stressv = {}
|
|
mode_strain = {}
|
|
mode_peeq = {}
|
|
mode_temp = {}
|
|
eigenmode = 0
|
|
|
|
if mode_disp and mode_stress and mode_strain:
|
|
mode_results = {}
|
|
mode_results['number'] = eigenmode
|
|
mode_results['disp'] = mode_disp
|
|
mode_results['stress'] = mode_stress
|
|
mode_results['stressv'] = mode_stressv
|
|
mode_results['strainv'] = mode_strain
|
|
mode_results['peeq'] = mode_peeq
|
|
mode_results['time'] = 0 # Don't return time if static
|
|
results.append(mode_results)
|
|
mode_disp = {}
|
|
mode_stress = {}
|
|
mode_stressv = {}
|
|
mode_strain = {}
|
|
mode_peeq = {}
|
|
eigenmode = 0
|
|
|
|
if mode_massflow and mode_networkpressure:
|
|
mode_results = {}
|
|
mode_results['number'] = eigenmode
|
|
mode_results['mflow'] = mode_massflow
|
|
mode_results['npressure'] = mode_networkpressure
|
|
mode_results['time'] = timestep
|
|
results.append(mode_results)
|
|
mode_massflow = {}
|
|
mode_networkpressure = {}
|
|
eigenmode = 0
|
|
nodes_found = False
|
|
elements_found = False
|
|
|
|
frd_file.close()
|
|
if not inout_nodes:
|
|
if results:
|
|
if 'mflow' in results[0] or 'npressure' in results[0]:
|
|
FreeCAD.Console.PrintError('We have mflow or npressure, but no inout_nodes file.\n')
|
|
if not nodes:
|
|
FreeCAD.Console.PrintError('FEM: No nodes found in Frd file.\n')
|
|
return {
|
|
'Nodes': nodes,
|
|
'Seg2Elem': elements_seg2,
|
|
'Seg3Elem': elements_seg3,
|
|
'Tria3Elem': elements_tria3,
|
|
'Tria6Elem': elements_tria6,
|
|
'Quad4Elem': elements_quad4,
|
|
'Quad8Elem': elements_quad8,
|
|
'Tetra4Elem': elements_tetra4,
|
|
'Tetra10Elem': elements_tetra10,
|
|
'Hexa8Elem': elements_hexa8,
|
|
'Hexa20Elem': elements_hexa20,
|
|
'Penta6Elem': elements_penta6,
|
|
'Penta15Elem': elements_penta15,
|
|
'Results': results
|
|
}
|