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create/src/Mod/Fem/importCcxFrdResults.py

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23 KiB
Python

# ***************************************************************************
# * *
# * Copyright (c) 2013 - Joachim Zettler *
# * Copyright (c) 2013 - Juergen Riegel <FreeCAD@juergen-riegel.net> *
# * Copyright (c) 2016 - Bernd Hahnebach <bernd@bimstatik.org> *
# * *
# * This program is free software; you can redistribute it and/or modify *
# * it under the terms of the GNU Lesser General Public License (LGPL) *
# * as published by the Free Software Foundation; either version 2 of *
# * the License, or (at your option) any later version. *
# * for detail see the LICENCE text file. *
# * *
# * This program is distributed in the hope that it will be useful, *
# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
# * GNU Library General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with this program; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
__title__ = "FreeCAD Calculix library"
__author__ = "Juergen Riegel , Michael Hindley, Bernd Hahnebach"
__url__ = "http://www.freecadweb.org"
## @package importCcxFrdResults
# \ingroup FEM
# \brief FreeCAD Calculix FRD Reader for FEM workbench
import FreeCAD
import os
########## generic FreeCAD import and export methods ##########
if open.__module__ == '__builtin__':
# because we'll redefine open below (Python2)
pyopen = open
elif open.__module__ == 'io':
# because we'll redefine open below (Python3)
pyopen = open
def open(filename):
"called when freecad opens a file"
docname = os.path.splitext(os.path.basename(filename))[0]
insert(filename, docname)
def insert(filename, docname):
"called when freecad wants to import a file"
try:
doc = FreeCAD.getDocument(docname)
except NameError:
doc = FreeCAD.newDocument(docname)
FreeCAD.ActiveDocument = doc
importFrd(filename)
########## module specific methods ##########
def importFrd(filename, analysis=None, result_name_prefix=None):
import importToolsFem
import ObjectsFem
if result_name_prefix is None:
result_name_prefix = ''
m = readResult(filename)
result_mesh_object = None
if len(m['Nodes']) > 0:
if analysis:
analysis_object = analysis
mesh = importToolsFem.make_femmesh(m)
result_mesh_object = ObjectsFem.makeMeshResult(FreeCAD.ActiveDocument, 'Result_mesh')
result_mesh_object.FemMesh = mesh
positions = []
for k, v in m['Nodes'].items():
positions.append(v)
p_x_max, p_y_max, p_z_max = map(max, zip(*positions))
p_x_min, p_y_min, p_z_min = map(min, zip(*positions))
x_span = abs(p_x_max - p_x_min)
y_span = abs(p_y_max - p_y_min)
z_span = abs(p_z_max - p_z_min)
span = max(x_span, y_span, z_span)
number_of_increments = len(m['Results'])
for result_set in m['Results']:
eigenmode_number = result_set['number']
step_time = result_set['time']
step_time = round(step_time, 2)
if eigenmode_number > 0:
results_name = result_name_prefix + 'mode_' + str(eigenmode_number) + '_results'
elif number_of_increments > 1:
results_name = result_name_prefix + 'time_' + str(step_time) + '_results'
else:
results_name = result_name_prefix + 'results'
results = ObjectsFem.makeResultMechanical(FreeCAD.ActiveDocument, results_name)
results.Mesh = result_mesh_object
results = importToolsFem.fill_femresult_mechanical(results, result_set, span)
if analysis:
analysis_object.addObject(results)
if FreeCAD.GuiUp:
if analysis:
import FemGui
FemGui.setActiveAnalysis(analysis_object)
FreeCAD.ActiveDocument.recompute()
else:
FreeCAD.Console.PrintError('Problem on frd file import. No nodes found in frd file.\n')
# read a calculix result file and extract the nodes, displacement vectors and stress values.
def readResult(frd_input):
print('Read results from: ' + frd_input)
inout_nodes = []
inout_nodes_file = frd_input.rsplit('.', 1)[0] + '_inout_nodes.txt'
if os.path.exists(inout_nodes_file):
print('Read special 1DFlow nodes data form: ' + inout_nodes_file)
f = pyopen(inout_nodes_file, "r")
lines = f.readlines()
for line in lines:
a = line.split(',')
inout_nodes.append(a)
f.close()
print(inout_nodes)
frd_file = pyopen(frd_input, "r")
nodes = {}
elements_hexa8 = {}
elements_penta6 = {}
elements_tetra4 = {}
elements_tetra10 = {}
elements_penta15 = {}
elements_hexa20 = {}
elements_tria3 = {}
elements_tria6 = {}
elements_quad4 = {}
elements_quad8 = {}
elements_seg2 = {}
elements_seg3 = {}
results = []
mode_results = {}
mode_disp = {}
mode_stress = {}
mode_stressv = {}
mode_strain = {}
mode_peeq = {}
mode_temp = {}
mode_massflow = {}
mode_networkpressure = {}
mode_disp_found = False
nodes_found = False
mode_stress_found = False
mode_strain_found = False
mode_peeq_found = False
mode_temp_found = False
mode_massflow_found = False
mode_networkpressure_found = False
mode_time_found = False
elements_found = False
input_continues = False
eigenmode = 0
elem = -1
elemType = 0
timestep = 0
timetemp = 0
for line in frd_file:
# Check if we found nodes section
if line[4:6] == "2C":
nodes_found = True
# first lets extract the node and coordinate information from the results file
if nodes_found and (line[1:3] == "-1"):
elem = int(line[4:13])
nodes_x = float(line[13:25])
nodes_y = float(line[25:37])
nodes_z = float(line[37:49])
nodes[elem] = FreeCAD.Vector(nodes_x, nodes_y, nodes_z)
# Check if we found nodes section
if line[4:6] == "3C":
elements_found = True
# first lets extract element number
if elements_found and (line[1:3] == "-1"):
elem = int(line[4:13])
elemType = int(line[14:18])
# then import elements
if elements_found and (line[1:3] == "-2"):
# node order fits with node order in writeAbaqus() in FemMesh.cpp
if elemType == 1:
# C3D8 CalculiX --> hexa8 FreeCAD
# N6, N7, N8, N5, N2, N3, N4, N1
nd1 = int(line[3:13])
nd2 = int(line[13:23])
nd3 = int(line[23:33])
nd4 = int(line[33:43])
nd5 = int(line[43:53])
nd6 = int(line[53:63])
nd7 = int(line[63:73])
nd8 = int(line[73:83])
elements_hexa8[elem] = (nd6, nd7, nd8, nd5, nd2, nd3, nd4, nd1)
elif elemType == 2:
# C3D6 Calculix --> penta6 FreeCAD
# N5, N6, N4, N2, N3, N1
nd1 = int(line[3:13])
nd2 = int(line[13:23])
nd3 = int(line[23:33])
nd4 = int(line[33:43])
nd5 = int(line[43:53])
nd6 = int(line[53:63])
elements_penta6[elem] = (nd5, nd6, nd4, nd2, nd3, nd1)
elif elemType == 3:
# C3D4 Calculix --> tetra4 FreeCAD
# N2, N1, N3, N4
nd1 = int(line[3:13])
nd2 = int(line[13:23])
nd3 = int(line[23:33])
nd4 = int(line[33:43])
elements_tetra4[elem] = (nd2, nd1, nd3, nd4)
elif elemType == 4 and input_continues is False:
# first line
# C3D20 Calculix --> hexa20 FreeCAD
# N6, N7, N8, N5, N2, N3, N4, N1, N14, N15, N16, N13, N10, N11, N12, N9, N18, N19, N20, N17
nd1 = int(line[3:13])
nd2 = int(line[13:23])
nd3 = int(line[23:33])
nd4 = int(line[33:43])
nd5 = int(line[43:53])
nd6 = int(line[53:63])
nd7 = int(line[63:73])
nd8 = int(line[73:83])
nd9 = int(line[83:93])
nd10 = int(line[93:103])
input_continues = True
elif elemType == 4 and input_continues is True:
# second line
nd11 = int(line[3:13])
nd12 = int(line[13:23])
nd13 = int(line[23:33])
nd14 = int(line[33:43])
nd15 = int(line[43:53])
nd16 = int(line[53:63])
nd17 = int(line[63:73])
nd18 = int(line[73:83])
nd19 = int(line[83:93])
nd20 = int(line[93:103])
input_continues = False
# CalculiX uses a different node order in input file *.inp and result file *.frd for hexa20 (C3D20)
# according to Guido (the developer of ccx)
# ccx (and thus the *.inp) follows the ABAQUS convention (documented in the ccx-documentation)
# cgx (and thus the *.frd) follows the FAM2 convention (documented in the cgx-documentation)
# FAM32 is from the company FEGS limited, maybe this company does not exist any more)
# elements_hexa20[elem] = (nd6, nd7, nd8, nd5, nd2, nd3, nd4, nd1, nd14, nd15,
# nd16, nd13, nd10, nd11, nd12, nd9, nd18, nd19, nd20, nd17)
# elements_hexa20[elem] = (nd6, nd7, nd8, nd5, nd2, nd3, nd4, nd1, nd14, nd15,
# nd16, nd13, nd18, nd19, nd20, nd17, nd10, nd11, nd12, nd9)
# hexa20 import works with the following frd file node assignment
elements_hexa20[elem] = (nd8, nd5, nd6, nd7, nd4, nd1, nd2, nd3, nd20, nd17,
nd18, nd19, nd12, nd9, nd10, nd11, nd16, nd13, nd14, nd15)
# print(elements_hexa20[elem])
elif elemType == 5 and input_continues is False:
# first line
# C3D15 Calculix --> penta15 FreeCAD
# N5, N6, N4, N2, N3, N1, N11, N12, N10, N8, N9, N7, N14, N15, N13
nd1 = int(line[3:13])
nd2 = int(line[13:23])
nd3 = int(line[23:33])
nd4 = int(line[33:43])
nd5 = int(line[43:53])
nd6 = int(line[53:63])
nd7 = int(line[63:73])
nd8 = int(line[73:83])
nd9 = int(line[83:93])
nd10 = int(line[93:103])
input_continues = True
elif elemType == 5 and input_continues is True:
# second line
nd11 = int(line[3:13])
nd12 = int(line[13:23])
nd13 = int(line[23:33])
nd14 = int(line[33:43])
nd15 = int(line[43:53])
input_continues = False
# CalculiX uses a different node order in input file *.inp and result file *.frd for penta15 (C3D15)
# elements_penta15[elem] = (nd5, nd6, nd4, nd2, nd3, nd1, nd11, nd12, nd10, nd8,
# nd9, nd7, nd14, nd15, nd13) # order of the *.inp file
elements_penta15[elem] = (nd5, nd6, nd4, nd2, nd3, nd1, nd14, nd15, nd13, nd8,
nd9, nd7, nd11, nd12, nd10)
elif elemType == 6:
# C3D10 Calculix --> tetra10 FreeCAD
# N2, N1, N3, N4, N5, N7, N6, N9, N8, N10
nd1 = int(line[3:13])
nd2 = int(line[13:23])
nd3 = int(line[23:33])
nd4 = int(line[33:43])
nd5 = int(line[43:53])
nd6 = int(line[53:63])
nd7 = int(line[63:73])
nd8 = int(line[73:83])
nd9 = int(line[83:93])
nd10 = int(line[93:103])
elements_tetra10[elem] = (nd2, nd1, nd3, nd4, nd5, nd7, nd6, nd9, nd8, nd10)
elif elemType == 7:
# S3 Calculix --> tria3 FreeCAD
# N1, N2, N3
nd1 = int(line[3:13])
nd2 = int(line[13:23])
nd3 = int(line[23:33])
elements_tria3[elem] = (nd1, nd2, nd3)
elif elemType == 8:
# S6 CalculiX --> tria6 FreeCAD
# N1, N2, N3, N4, N5, N6
nd1 = int(line[3:13])
nd2 = int(line[13:23])
nd3 = int(line[23:33])
nd4 = int(line[33:43])
nd5 = int(line[43:53])
nd6 = int(line[53:63])
elements_tria6[elem] = (nd1, nd2, nd3, nd4, nd5, nd6)
elif elemType == 9:
# S4 CalculiX --> quad4 FreeCAD
# N1, N2, N3, N4
nd1 = int(line[3:13])
nd2 = int(line[13:23])
nd3 = int(line[23:33])
nd4 = int(line[33:43])
elements_quad4[elem] = (nd1, nd2, nd3, nd4)
elif elemType == 10:
# S8 CalculiX --> quad8 FreeCAD
# N1, N2, N3, N4, N5, N6, N7, N8
nd1 = int(line[3:13])
nd2 = int(line[13:23])
nd3 = int(line[23:33])
nd4 = int(line[33:43])
nd5 = int(line[43:53])
nd6 = int(line[53:63])
nd7 = int(line[63:73])
nd8 = int(line[73:83])
elements_quad8[elem] = (nd1, nd2, nd3, nd4, nd5, nd6, nd7, nd8)
elif elemType == 11:
# B31 CalculiX --> seg2 FreeCAD
# N1, N2
nd1 = int(line[3:13])
nd2 = int(line[13:23])
elements_seg2[elem] = (nd1, nd2)
elif elemType == 12:
# B32 CalculiX --> seg3 FreeCAD
# Also D element element number
# N1, N3 ,N2 Order in outpufile is 1,3,2
nd1 = int(line[3:13])
nd3 = int(line[13:23])
nd2 = int(line[23:33])
if inout_nodes:
for i in range(len(inout_nodes)):
if nd1 == int(inout_nodes[i][1]):
elements_seg3[elem] = (int(inout_nodes[i][2]), nd3, nd1) # fluid inlet node numbering
elif nd3 == int(inout_nodes[i][1]):
elements_seg3[elem] = (nd1, int(inout_nodes[i][2]), nd3) # fluid outlet node numbering
else:
elements_seg3[elem] = (nd1, nd2, nd3) # normal node numbering for D, B32 elements
# Check if we found new eigenmode
if line[5:10] == "PMODE":
eigenmode = int(line[30:36])
# Check if we found displacement section
if line[5:9] == "DISP":
mode_disp_found = True
# we found a displacement line in the frd file
if mode_disp_found and (line[1:3] == "-1"):
elem = int(line[4:13])
mode_disp_x = float(line[13:25])
mode_disp_y = float(line[25:37])
mode_disp_z = float(line[37:49])
mode_disp[elem] = FreeCAD.Vector(mode_disp_x, mode_disp_y, mode_disp_z)
if line[5:11] == "STRESS":
mode_stress_found = True
# we found a stress line in the frd file
if mode_stress_found and (line[1:3] == "-1"):
elem = int(line[4:13])
stress_1 = float(line[13:25])
stress_2 = float(line[25:37])
stress_3 = float(line[37:49])
stress_4 = float(line[49:61])
stress_5 = float(line[61:73])
stress_6 = float(line[73:85])
mode_stress[elem] = (stress_1, stress_2, stress_3, stress_4, stress_5, stress_6)
mode_stressv[elem] = FreeCAD.Vector(stress_1, stress_2, stress_3)
if line[5:13] == "TOSTRAIN":
mode_strain_found = True
# we found a strain line in the frd file
if mode_strain_found and (line[1:3] == "-1"):
elem = int(line[4:13])
strain_1 = float(line[13:25])
strain_2 = float(line[25:37])
strain_3 = float(line[37:49])
# strain_4 = float(line[49:61]) #Not used in vector
# strain_5 = float(line[61:73])
# strain_6 = float(line[73:85])
mode_strain[elem] = FreeCAD.Vector(strain_1, strain_2, strain_3)
if line[5:7] == "PE":
mode_peeq_found = True
# we found an equivalent plastic strain line in the frd file
if mode_peeq_found and (line[1:3] == "-1"):
elem = int(line[4:13])
peeq = float(line[13:25])
mode_peeq[elem] = (peeq)
# Check if we found a time step
if line[4:10] == "1PSTEP":
mode_time_found = True
if mode_time_found and (line[2:7] == "100CL"):
timetemp = float(line[13:25])
if timetemp > timestep:
timestep = timetemp
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
}