FEM Tutorial Python
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|
| Тема |
|---|
| Finite Element Analysis |
| уровень |
| Intermediates |
| Время для завершения |
| 30 minutes |
| автор |
| Bernd |
| FreeCAD версия |
| 0.17.12995 or above |
| Пример файла (ов) |
Введение
Этот пример предназначен для демонстрации того, как Python выполняет простой анализ методом конечных элементов (FEA) во FreeCAD FEM Module. Модель из FEM_CalculiX_Cantilever_3D будет взята для этого примера.
Требования
- FreeCAD версия -> в соответствии с обзором учебника
- Это можно проверить в меню Справка -> о FreeCAD.
- Несмотря на продолжающиеся изменения в модуле FEM, рекомендуется использовать последний снимок разработки FreeCAD для анализа FEM с использованием Python.
- Настройка модуля FEM. Проверьте FEM_CalculiX_Cantilever_3D
Let's start
New document and the part to analyze
# new document
doc = App.newDocument("Scripted_CalculiX_Cantilever3D")
# part
import Part
box_obj = doc.addObject('Part::Box', 'Box')
box_obj.Height = box_obj.Width = 1000
box_obj.Length = 8000
# see how our part looks like
import FreeCADGui
FreeCADGui.ActiveDocument.activeView().viewAxonometric()
FreeCADGui.SendMsgToActiveView("ViewFit")
#
Analysis and analysis objects
# let us create some objects
# import to create objects
import ObjectsFem
# analysis
analysis_object = ObjectsFem.makeAnalysis(doc, "Analysis")
# solver (we gone use the well tested CcxTools solver object)
solver_object = ObjectsFem.makeSolverCalculixCcxTools(doc, "CalculiX")
solver_object.GeometricalNonlinearity = 'linear'
solver_object.ThermoMechSteadyState = True
solver_object.MatrixSolverType = 'default'
solver_object.IterationsControlParameterTimeUse = False
analysis_object.addObject(solver_object)
# material
material_object = ObjectsFem.makeMaterialSolid(doc, "SolidMaterial")
mat = material_object.Material
mat['Name'] = "Steel-Generic"
mat['YoungsModulus'] = "210000 MPa"
mat['PoissonRatio'] = "0.30"
mat['Density'] = "7900 kg/m^3"
material_object.Material = mat
analysis_object.addObject(material_object)
# fixed_constraint
fixed_constraint = ObjectsFem.makeConstraintFixed(doc, "FemConstraintFixed")
fixed_constraint.References = [(doc.Box, "Face1")]
analysis_object.addObject(fixed_constraint)
# force_constraint
force_constraint = ObjectsFem.makeConstraintForce(doc, "FemConstraintForce")
force_constraint.References = [(doc.Box, "Face2")]
force_constraint.Force = 9000000.0
force_constraint.Direction = (doc.Box, ["Edge5"])
force_constraint.Reversed = True
analysis_object.addObject(force_constraint)
FEM mesh (manual)
This section contains the FEM mesh code. Please expand it to view the contents.
Note: Check out the Additional Information section below for how to script mesh generation with GMSH or Netgen mesh object.
# mesh
import Fem
femmesh = Fem.FemMesh()
# nodes
femmesh.addNode(8000.0, 1000.0, 0.0, 1)
femmesh.addNode(8000.0, 1000.0, 1000.0, 2)
femmesh.addNode(8000.0, 0.0, 0.0, 3)
femmesh.addNode(8000.0, 0.0, 1000.0, 4)
femmesh.addNode(0.0, 1000.0, 0.0, 5)
femmesh.addNode(0.0, 1000.0, 1000.0, 6)
femmesh.addNode(0.0, 0.0, 0.0, 7)
femmesh.addNode(0.0, 0.0, 1000.0, 8)
femmesh.addNode(728.0, 1000.0, 1000.0, 9)
femmesh.addNode(1456.0, 1000.0, 1000.0, 10)
femmesh.addNode(2184.0, 1000.0, 1000.0, 11)
femmesh.addNode(2912.0, 1000.0, 1000.0, 12)
femmesh.addNode(3640.0, 1000.0, 1000.0, 13)
femmesh.addNode(4368.0, 1000.0, 1000.0, 14)
femmesh.addNode(5096.0, 1000.0, 1000.0, 15)
femmesh.addNode(5824.0, 1000.0, 1000.0, 16)
femmesh.addNode(6552.0, 1000.0, 1000.0, 17)
femmesh.addNode(7280.0, 1000.0, 1000.0, 18)
femmesh.addNode(728.0, 0.0, 1000.0, 19)
femmesh.addNode(1456.0, 0.0, 1000.0, 20)
femmesh.addNode(2184.0, 0.0, 1000.0, 21)
femmesh.addNode(2912.0, 0.0, 1000.0, 22)
femmesh.addNode(3640.0, 0.0, 1000.0, 23)
femmesh.addNode(4368.0, 0.0, 1000.0, 24)
femmesh.addNode(5096.0, 0.0, 1000.0, 25)
femmesh.addNode(5824.0, 0.0, 1000.0, 26)
femmesh.addNode(6552.0, 0.0, 1000.0, 27)
femmesh.addNode(7280.0, 0.0, 1000.0, 28)
femmesh.addNode(728.0, 1000.0, 0.0, 29)
femmesh.addNode(1456.0, 1000.0, 0.0, 30)
femmesh.addNode(2184.0, 1000.0, 0.0, 31)
femmesh.addNode(2912.0, 1000.0, 0.0, 32)
femmesh.addNode(3640.0, 1000.0, 0.0, 33)
femmesh.addNode(4368.0, 1000.0, 0.0, 34)
femmesh.addNode(5096.0, 1000.0, 0.0, 35)
femmesh.addNode(5824.0, 1000.0, 0.0, 36)
femmesh.addNode(6552.0, 1000.0, 0.0, 37)
femmesh.addNode(7280.0, 1000.0, 0.0, 38)
femmesh.addNode(728.0, 0.0, 0.0, 39)
femmesh.addNode(1456.0, 0.0, 0.0, 40)
femmesh.addNode(2184.0, 0.0, 0.0, 41)
femmesh.addNode(2912.0, 0.0, 0.0, 42)
femmesh.addNode(3640.0, 0.0, 0.0, 43)
femmesh.addNode(4368.0, 0.0, 0.0, 44)
femmesh.addNode(5096.0, 0.0, 0.0, 45)
femmesh.addNode(5824.0, 0.0, 0.0, 46)
femmesh.addNode(6552.0, 0.0, 0.0, 47)
femmesh.addNode(7280.0, 0.0, 0.0, 48)
femmesh.addNode(8000.0, 500.0, 500.0, 49)
femmesh.addNode(0.0, 500.0, 500.0, 50)
femmesh.addNode(4731.99999977, 500.000001086, 499.999998599, 51)
femmesh.addNode(0.0, 500.0, 1000.0, 52)
femmesh.addNode(364.0, 1000.0, 1000.0, 53)
femmesh.addNode(1092.0, 1000.0, 1000.0, 54)
femmesh.addNode(1820.0, 1000.0, 1000.0, 55)
femmesh.addNode(2548.0, 1000.0, 1000.0, 56)
femmesh.addNode(3276.0, 1000.0, 1000.0, 57)
femmesh.addNode(4004.0, 1000.0, 1000.0, 58)
femmesh.addNode(4732.0, 1000.0, 1000.0, 59)
femmesh.addNode(5460.0, 1000.0, 1000.0, 60)
femmesh.addNode(6188.0, 1000.0, 1000.0, 61)
femmesh.addNode(6916.0, 1000.0, 1000.0, 62)
femmesh.addNode(7640.0, 1000.0, 1000.0, 63)
femmesh.addNode(8000.0, 500.0, 1000.0, 64)
femmesh.addNode(364.0, 0.0, 1000.0, 65)
femmesh.addNode(1092.0, 0.0, 1000.0, 66)
femmesh.addNode(1820.0, 0.0, 1000.0, 67)
femmesh.addNode(2548.0, 0.0, 1000.0, 68)
femmesh.addNode(3276.0, 0.0, 1000.0, 69)
femmesh.addNode(4004.0, 0.0, 1000.0, 70)
femmesh.addNode(4732.0, 0.0, 1000.0, 71)
femmesh.addNode(5460.0, 0.0, 1000.0, 72)
femmesh.addNode(6188.0, 0.0, 1000.0, 73)
femmesh.addNode(6916.0, 0.0, 1000.0, 74)
femmesh.addNode(7640.0, 0.0, 1000.0, 75)
femmesh.addNode(0.0, 500.0, 0.0, 76)
femmesh.addNode(364.0, 1000.0, 0.0, 77)
femmesh.addNode(1092.0, 1000.0, 0.0, 78)
femmesh.addNode(1820.0, 1000.0, 0.0, 79)
femmesh.addNode(2548.0, 1000.0, 0.0, 80)
femmesh.addNode(3276.0, 1000.0, 0.0, 81)
femmesh.addNode(4004.0, 1000.0, 0.0, 82)
femmesh.addNode(4732.0, 1000.0, 0.0, 83)
femmesh.addNode(5460.0, 1000.0, 0.0, 84)
femmesh.addNode(6188.0, 1000.0, 0.0, 85)
femmesh.addNode(6916.0, 1000.0, 0.0, 86)
femmesh.addNode(7640.0, 1000.0, 0.0, 87)
femmesh.addNode(8000.0, 500.0, 0.0, 88)
femmesh.addNode(364.0, 0.0, 0.0, 89)
femmesh.addNode(1092.0, 0.0, 0.0, 90)
femmesh.addNode(1820.0, 0.0, 0.0, 91)
femmesh.addNode(2548.0, 0.0, 0.0, 92)
femmesh.addNode(3276.0, 0.0, 0.0, 93)
femmesh.addNode(4004.0, 0.0, 0.0, 94)
femmesh.addNode(4732.0, 0.0, 0.0, 95)
femmesh.addNode(5460.0, 0.0, 0.0, 96)
femmesh.addNode(6188.0, 0.0, 0.0, 97)
femmesh.addNode(6916.0, 0.0, 0.0, 98)
femmesh.addNode(7640.0, 0.0, 0.0, 99)
femmesh.addNode(8000.0, 1000.0, 500.0, 100)
femmesh.addNode(0.0, 1000.0, 500.0, 101)
femmesh.addNode(8000.0, 0.0, 500.0, 102)
femmesh.addNode(0.0, 0.0, 500.0, 103)
femmesh.addNode(364.0, 500.0, 1000.0, 104)
femmesh.addNode(728.0, 500.0, 1000.0, 105)
femmesh.addNode(1092.0, 500.0, 1000.0, 106)
femmesh.addNode(1456.0, 500.0, 1000.0, 107)
femmesh.addNode(1820.0, 500.0, 1000.0, 108)
femmesh.addNode(2184.0, 500.0, 1000.0, 109)
femmesh.addNode(2548.0, 500.0, 1000.0, 110)
femmesh.addNode(3276.0, 500.0, 1000.0, 111)
femmesh.addNode(3640.0, 500.0, 1000.0, 112)
femmesh.addNode(4004.0, 500.0, 1000.0, 113)
femmesh.addNode(4368.0, 500.0, 1000.0, 114)
femmesh.addNode(4732.0, 500.0, 1000.0, 115)
femmesh.addNode(5096.0, 500.0, 1000.0, 116)
femmesh.addNode(5460.0, 500.0, 1000.0, 117)
femmesh.addNode(5824.0, 500.0, 1000.0, 118)
femmesh.addNode(6188.0, 500.0, 1000.0, 119)
femmesh.addNode(6552.0, 500.0, 1000.0, 120)
femmesh.addNode(6916.0, 500.0, 1000.0, 121)
femmesh.addNode(7640.0, 500.0, 1000.0, 122)
femmesh.addNode(2912.0, 500.0, 1000.0, 123)
femmesh.addNode(7280.0, 500.0, 1000.0, 124)
femmesh.addNode(364.0, 500.0, 0.0, 125)
femmesh.addNode(1092.0, 500.0, 0.0, 126)
femmesh.addNode(728.0, 500.0, 0.0, 127)
femmesh.addNode(1820.0, 500.0, 0.0, 128)
femmesh.addNode(1456.0, 500.0, 0.0, 129)
femmesh.addNode(2548.0, 500.0, 0.0, 130)
femmesh.addNode(2184.0, 500.0, 0.0, 131)
femmesh.addNode(3640.0, 500.0, 0.0, 132)
femmesh.addNode(3276.0, 500.0, 0.0, 133)
femmesh.addNode(4004.0, 500.0, 0.0, 134)
femmesh.addNode(5096.0, 500.0, 0.0, 135)
femmesh.addNode(4732.0, 500.0, 0.0, 136)
femmesh.addNode(5460.0, 500.0, 0.0, 137)
femmesh.addNode(6188.0, 500.0, 0.0, 138)
femmesh.addNode(5824.0, 500.0, 0.0, 139)
femmesh.addNode(6916.0, 500.0, 0.0, 140)
femmesh.addNode(6552.0, 500.0, 0.0, 141)
femmesh.addNode(7640.0, 500.0, 0.0, 142)
femmesh.addNode(2912.0, 500.0, 0.0, 143)
femmesh.addNode(4368.0, 500.0, 0.0, 144)
femmesh.addNode(7280.0, 500.0, 0.0, 145)
femmesh.addNode(364.0, 1000.0, 500.0, 146)
femmesh.addNode(728.0, 1000.0, 500.0, 147)
femmesh.addNode(1092.0, 1000.0, 500.0, 148)
femmesh.addNode(1456.0, 1000.0, 500.0, 149)
femmesh.addNode(1820.0, 1000.0, 500.0, 150)
femmesh.addNode(2184.0, 1000.0, 500.0, 151)
femmesh.addNode(2548.0, 1000.0, 500.0, 152)
femmesh.addNode(3276.0, 1000.0, 500.0, 153)
femmesh.addNode(3640.0, 1000.0, 500.0, 154)
femmesh.addNode(4004.0, 1000.0, 500.0, 155)
femmesh.addNode(4368.0, 1000.0, 500.0, 156)
femmesh.addNode(4732.0, 1000.0, 500.0, 157)
femmesh.addNode(5096.0, 1000.0, 500.0, 158)
femmesh.addNode(5460.0, 1000.0, 500.0, 159)
femmesh.addNode(5824.0, 1000.0, 500.0, 160)
femmesh.addNode(6188.0, 1000.0, 500.0, 161)
femmesh.addNode(6552.0, 1000.0, 500.0, 162)
femmesh.addNode(6916.0, 1000.0, 500.0, 163)
femmesh.addNode(7640.0, 1000.0, 500.0, 164)
femmesh.addNode(2912.0, 1000.0, 500.0, 165)
femmesh.addNode(7280.0, 1000.0, 500.0, 166)
femmesh.addNode(364.0, 0.0, 500.0, 167)
femmesh.addNode(1092.0, 0.0, 500.0, 168)
femmesh.addNode(728.0, 0.0, 500.0, 169)
femmesh.addNode(1820.0, 0.0, 500.0, 170)
femmesh.addNode(1456.0, 0.0, 500.0, 171)
femmesh.addNode(2548.0, 0.0, 500.0, 172)
femmesh.addNode(2184.0, 0.0, 500.0, 173)
femmesh.addNode(3640.0, 0.0, 500.0, 174)
femmesh.addNode(3276.0, 0.0, 500.0, 175)
femmesh.addNode(4004.0, 0.0, 500.0, 176)
femmesh.addNode(5096.0, 0.0, 500.0, 177)
femmesh.addNode(4732.0, 0.0, 500.0, 178)
femmesh.addNode(5460.0, 0.0, 500.0, 179)
femmesh.addNode(6188.0, 0.0, 500.0, 180)
femmesh.addNode(5824.0, 0.0, 500.0, 181)
femmesh.addNode(6916.0, 0.0, 500.0, 182)
femmesh.addNode(6552.0, 0.0, 500.0, 183)
femmesh.addNode(7640.0, 0.0, 500.0, 184)
femmesh.addNode(2912.0, 0.0, 500.0, 185)
femmesh.addNode(4368.0, 0.0, 500.0, 186)
femmesh.addNode(7280.0, 0.0, 500.0, 187)
femmesh.addNode(8000.0, 250.0, 250.0, 188)
femmesh.addNode(8000.0, 250.0, 750.0, 189)
femmesh.addNode(8000.0, 750.0, 750.0, 190)
femmesh.addNode(8000.0, 750.0, 250.0, 191)
femmesh.addNode(0.0, 250.0, 750.0, 192)
femmesh.addNode(0.0, 250.0, 250.0, 193)
femmesh.addNode(0.0, 750.0, 250.0, 194)
femmesh.addNode(0.0, 750.0, 750.0, 195)
femmesh.addNode(1456.0, 500.0, 500.0, 196)
femmesh.addNode(6552.0, 500.0, 500.0, 197)
femmesh.addNode(6916.0, 500.0, 500.0, 198)
femmesh.addNode(2184.0, 500.0, 500.0, 199)
femmesh.addNode(2548.0, 500.0, 500.0, 200)
femmesh.addNode(2912.0, 500.0, 500.0, 201)
femmesh.addNode(1820.0, 500.0, 500.0, 202)
femmesh.addNode(7640.0, 750.0, 250.0, 203)
femmesh.addNode(7640.0, 750.0, 750.0, 204)
femmesh.addNode(7280.0, 500.0, 500.0, 205)
femmesh.addNode(7640.0, 250.0, 250.0, 206)
femmesh.addNode(5460.0, 500.0, 500.0, 207)
femmesh.addNode(5096.0, 500.0, 500.0, 208)
femmesh.addNode(6188.0, 500.0, 500.0, 209)
femmesh.addNode(5824.0, 500.0, 500.0, 210)
femmesh.addNode(364.0, 750.0, 250.0, 211)
femmesh.addNode(364.0, 750.0, 750.0, 212)
femmesh.addNode(364.0, 250.0, 250.0, 213)
femmesh.addNode(1092.0, 500.0, 500.0, 214)
femmesh.addNode(728.0, 500.0, 500.0, 215)
femmesh.addNode(364.0, 250.0, 750.0, 216)
femmesh.addNode(4549.99999989, 250.000000543, 249.9999993, 217)
femmesh.addNode(4549.99999989, 750.000000543, 249.9999993, 218)
femmesh.addNode(4549.99999989, 750.000000543, 749.9999993, 219)
femmesh.addNode(4368.0, 500.0, 500.0, 220)
femmesh.addNode(4549.99999989, 250.000000543, 749.9999993, 221)
femmesh.addNode(4913.99999989, 250.000000543, 749.9999993, 222)
femmesh.addNode(4913.99999989, 750.000000543, 749.9999993, 223)
femmesh.addNode(3276.0, 500.0, 500.0, 224)
femmesh.addNode(3640.0, 500.0, 500.0, 225)
femmesh.addNode(4004.0, 500.0, 500.0, 226)
femmesh.addNode(4913.99999989, 750.000000543, 249.9999993, 227)
femmesh.addNode(4913.99999989, 250.000000543, 249.9999993, 228)
# elements
femmesh.addVolume([40, 19, 10, 20, 168, 106, 196, 171, 66, 107], 149)
femmesh.addVolume([10, 31, 30, 40, 150, 79, 149, 196, 128, 129], 150)
femmesh.addVolume([38, 17, 18, 47, 163, 62, 166, 140, 197, 198], 151)
femmesh.addVolume([32, 41, 11, 12, 130, 199, 152, 165, 200, 56], 152)
femmesh.addVolume([12, 32, 41, 42, 165, 130, 200, 201, 143, 92], 153)
femmesh.addVolume([42, 21, 12, 22, 172, 110, 201, 185, 68, 123], 154)
femmesh.addVolume([10, 31, 40, 11, 150, 128, 196, 55, 151, 202], 155)
femmesh.addVolume([11, 12, 41, 21, 56, 200, 199, 109, 110, 173], 156)
femmesh.addVolume([20, 41, 11, 40, 170, 199, 108, 171, 91, 202], 157)
femmesh.addVolume([20, 41, 21, 11, 170, 173, 67, 108, 199, 109], 158)
femmesh.addVolume([32, 11, 41, 31, 152, 199, 130, 80, 151, 131], 159)
femmesh.addVolume([11, 10, 20, 40, 55, 107, 108, 202, 196, 171], 160)
femmesh.addVolume([38, 17, 47, 37, 163, 197, 140, 86, 162, 141], 161)
femmesh.addVolume([38, 18, 49, 48, 166, 204, 203, 145, 205, 206], 162)
femmesh.addVolume([46, 15, 45, 36, 207, 208, 96, 139, 159, 137], 163)
femmesh.addVolume([47, 16, 46, 37, 209, 210, 97, 141, 161, 138], 164)
femmesh.addVolume([18, 4, 2, 49, 122, 64, 63, 204, 189, 190], 165)
femmesh.addVolume([18, 17, 27, 47, 62, 120, 121, 198, 197, 183], 166)
femmesh.addVolume([38, 18, 48, 47, 166, 205, 145, 140, 198, 98], 167)
femmesh.addVolume([12, 23, 42, 22, 111, 175, 201, 123, 69, 185], 168)
femmesh.addVolume([26, 47, 27, 17, 180, 183, 73, 119, 197, 120], 169)
femmesh.addVolume([50, 29, 9, 6, 211, 147, 212, 195, 146, 53], 170)
femmesh.addVolume([27, 48, 18, 47, 182, 205, 121, 183, 98, 198], 171)
femmesh.addVolume([8, 7, 39, 50, 103, 89, 167, 192, 193, 213], 172)
femmesh.addVolume([40, 9, 39, 30, 214, 215, 90, 129, 148, 126], 173)
femmesh.addVolume([42, 21, 41, 12, 172, 173, 92, 201, 110, 200], 174)
femmesh.addVolume([50, 9, 29, 39, 212, 147, 211, 213, 215, 127], 175)
femmesh.addVolume([29, 7, 50, 39, 125, 193, 211, 127, 89, 213], 176)
femmesh.addVolume([31, 11, 41, 40, 151, 199, 131, 128, 202, 91], 177)
femmesh.addVolume([47, 16, 37, 17, 209, 161, 141, 197, 61, 162], 178)
femmesh.addVolume([40, 9, 30, 10, 214, 148, 129, 196, 54, 149], 179)
femmesh.addVolume([2, 38, 49, 1, 164, 203, 190, 100, 87, 191], 180)
femmesh.addVolume([2, 38, 18, 49, 164, 166, 63, 190, 203, 204], 181)
femmesh.addVolume([48, 49, 38, 3, 206, 203, 145, 99, 188, 142], 182)
femmesh.addVolume([38, 49, 1, 3, 203, 191, 87, 142, 188, 88], 183)
femmesh.addVolume([49, 4, 3, 48, 189, 102, 188, 206, 184, 99], 184)
femmesh.addVolume([28, 48, 4, 18, 187, 184, 75, 124, 205, 122], 185)
femmesh.addVolume([49, 18, 4, 48, 204, 122, 189, 206, 205, 184], 186)
femmesh.addVolume([7, 50, 5, 29, 193, 194, 76, 125, 211, 77], 187)
femmesh.addVolume([50, 6, 5, 29, 195, 101, 194, 211, 146, 77], 188)
femmesh.addVolume([50, 9, 19, 6, 212, 105, 216, 195, 53, 104], 189)
femmesh.addVolume([50, 19, 9, 39, 216, 105, 212, 213, 169, 215], 190)
femmesh.addVolume([50, 19, 8, 6, 216, 65, 192, 195, 104, 52], 191)
femmesh.addVolume([40, 9, 10, 19, 214, 54, 196, 168, 105, 106], 192)
femmesh.addVolume([51, 44, 34, 14, 217, 144, 218, 219, 220, 156], 193)
femmesh.addVolume([51, 24, 44, 14, 221, 186, 217, 219, 114, 220], 194)
femmesh.addVolume([25, 15, 24, 51, 116, 115, 71, 222, 223, 221], 195)
femmesh.addVolume([43, 12, 32, 13, 224, 165, 133, 225, 57, 153], 196)
femmesh.addVolume([43, 12, 23, 42, 224, 111, 174, 93, 201, 175], 197)
femmesh.addVolume([43, 12, 13, 23, 224, 57, 225, 174, 111, 112], 198)
femmesh.addVolume([43, 12, 42, 32, 224, 201, 93, 133, 165, 143], 199)
femmesh.addVolume([34, 13, 14, 44, 155, 58, 156, 144, 226, 220], 200)
femmesh.addVolume([14, 24, 15, 51, 114, 115, 59, 219, 221, 223], 201)
femmesh.addVolume([23, 24, 14, 44, 70, 114, 113, 176, 186, 220], 202)
femmesh.addVolume([33, 32, 13, 43, 81, 153, 154, 132, 133, 225], 203)
femmesh.addVolume([34, 33, 13, 43, 82, 154, 155, 134, 132, 225], 204)
femmesh.addVolume([35, 14, 15, 51, 157, 59, 158, 227, 219, 223], 205)
femmesh.addVolume([25, 45, 15, 51, 177, 208, 116, 222, 228, 223], 206)
femmesh.addVolume([44, 43, 13, 23, 94, 225, 226, 176, 174, 112], 207)
femmesh.addVolume([35, 34, 14, 51, 83, 156, 157, 227, 218, 219], 208)
femmesh.addVolume([46, 15, 36, 16, 207, 159, 139, 210, 60, 160], 209)
femmesh.addVolume([36, 35, 15, 45, 84, 158, 159, 137, 135, 208], 210)
femmesh.addVolume([37, 36, 16, 46, 85, 160, 161, 138, 139, 210], 211)
femmesh.addVolume([25, 26, 16, 46, 72, 118, 117, 179, 181, 210], 212)
femmesh.addVolume([47, 16, 17, 26, 209, 61, 197, 180, 118, 119], 213)
femmesh.addVolume([47, 16, 26, 46, 209, 118, 180, 97, 210, 181], 214)
femmesh.addVolume([27, 28, 18, 48, 74, 124, 121, 182, 187, 205], 215)
femmesh.addVolume([35, 34, 51, 45, 83, 218, 227, 135, 136, 228], 216)
femmesh.addVolume([13, 14, 44, 23, 58, 220, 226, 112, 113, 176], 217)
femmesh.addVolume([44, 25, 24, 51, 178, 71, 186, 217, 222, 221], 218)
femmesh.addVolume([44, 45, 25, 51, 95, 177, 178, 217, 228, 222], 219)
femmesh.addVolume([46, 15, 16, 25, 207, 60, 210, 179, 116, 117], 220)
femmesh.addVolume([46, 15, 25, 45, 207, 116, 179, 96, 208, 177], 221)
femmesh.addVolume([50, 8, 19, 39, 192, 65, 216, 213, 167, 169], 222)
femmesh.addVolume([35, 51, 15, 45, 227, 223, 158, 135, 228, 208], 223)
femmesh.addVolume([34, 44, 43, 13, 144, 94, 134, 155, 226, 225], 224)
femmesh.addVolume([51, 44, 45, 34, 217, 95, 228, 218, 144, 136], 225)
femmesh.addVolume([9, 29, 39, 30, 147, 127, 215, 148, 78, 126], 226)
femmesh.addVolume([40, 9, 19, 39, 214, 105, 168, 90, 215, 169], 227)
# add it to the analysis
femmesh_obj = doc.addObject('Fem::FemMeshObject', 'Box_Mesh')
femmesh_obj.FemMesh = femmesh
analysis_object.addObject(femmesh_obj)
FEM mesh (gmsh)
femmesh_obj = ObjectsFem.makeMeshGmsh(doc, box_obj.Name + "_Mesh")
femmesh_obj.Part = doc.Box
doc.recompute()
from femmesh.gmshtools import GmshTools as gt
gmsh_mesh = gt(femmesh_obj)
error = gmsh_mesh.create_mesh()
print(error)
analysis_object.addObject(femmesh_obj)
FEM mesh (netgen)
mesh = doc.addObject('Fem::FemMeshShapeNetgenObject', 'FEMMeshNetgen')
mesh.Shape = doc.Box
mesh.MaxSize = 1000
mesh.Fineness = "Moderate"
mesh.Optimize = True
mesh.SecondOrder = True
doc.recompute()
analysis_object.addObject(mesh)
Recompute
# recompute
doc.recompute()
###
Run the analysis
To run the analysis using Python, an instance of the ccxtools module class FemToolsCcx needs to be created. Once this instance has been created, we have two choices when running the analysis:
- Run all processes together at once (see "All in one" section below)
- Run processes one after the other (see "Step by step" section below)
If there is only one analysis in the document and only one solver in the analysis, then no objects need to be passed on fea init. The init method of the fea class will activate the analysis if the GUI is up.
Activating an analysis using Python works a follows:
# activating analysis
import FemGui
FemGui.setActiveAnalysis(doc.Analysis)
###
All in one
# run the analysis all in one
from femtools import ccxtools
fea = ccxtools.FemToolsCcx()
fea.purge_results()
fea.run()
###
Step by step
# run the analysis step by step
from femtools import ccxtools
fea = ccxtools.FemToolsCcx()
fea.update_objects()
fea.setup_working_dir()
fea.setup_ccx()
message = fea.check_prerequisites()
if not message:
fea.purge_results()
fea.write_inp_file()
# on error at inp file writing, the inp file path "" was returned (even if the file was written)
# if we would write the inp file anyway, we need to again set it manually
# fea.inp_file_name = '/tmp/FEMWB/FEMMeshGmsh.inp'
fea.ccx_run()
fea.load_results()
else:
FreeCAD.Console.PrintError("Houston, we have a problem! {}\n".format(message)) # in report view
print("Houston, we have a problem! {}\n".format(message)) # in python console
###
Show the results
# show some results
for m in analysis_object.Group:
if m.isDerivedFrom('Fem::FemResultObject'):
result_object = m
break
femmesh_obj.ViewObject.setNodeDisplacementByVectors(result_object.NodeNumbers, result_object.DisplacementVectors)
femmesh_obj.ViewObject.applyDisplacement(10)
###
Additional Information
Scripting FEM mesh objects
Netgen
Scripting the Netgen mesh object was attempted in the "Parametrized FEM study" (FreeCAD FEM subforum thread), but has some limitations.
GMSH
On the contrary, the GMSH mesh object fully supports python scripting. See the following forum posts:
- https://forum.freecadweb.org/viewtopic.php?f=22&t=42922#p365042
- forum topic http://forum.freecadweb.org/viewtopic.php?f=18&t=20087
Scripting multiple analysis
See forum post: http://forum.freecadweb.org/viewtopic.php?f=18&t=19549#p151385
Scripting results
Standard FreeCAD result object
See forum posts:
- https://forum.freecadweb.org/viewtopic.php?f=18&t=34048&p=289519#p289519 → scale factor in standard result object
- http://forum.freecadweb.org/viewtopic.php?f=18&t=4677&start=20#p148982
- http://forum.freecadweb.org/viewtopic.php?f=18&t=4677&start=30#p149043
- http://forum.freecadweb.org/viewtopic.php?t=18415#p144028
- https://forum.freecadweb.org/viewtopic.php?f=18&t=31123&p=258761#p258761 → coloring just one element
- https://forum.freecadweb.org/viewtopic.php?f=18&t=41951&p=357687#p357685 → reset all result mesh, show colored displacement magnitude
Vtk result object
See forum posts:
Консольный режим
Запись входного файла в режиме консоли FreeCAD (без графического интерфейса) может быть выполнена в тестовом режиме. См. Сообщение на этом форуме: https://forum.freecadweb.org/viewtopic.php?f=22&t=25852&p=208897#p208897.
Приложение
Повеселись!
Учебники 
- Общее: Учебники, Видеоуроки (Product design, Архитектура, Устаревшие)
- Sketcher: Basic Sketcher tutorial, Sketcher reference
- PartDesign: Simple object, Simple object 2
- Part: Engraved text, Wiffle ball, Basic modeling, Screw threads, Placement
- TechDraw: Basic TechDraw tutorial, New template
- Path: Path for the impatient
- FEM: Cantilever analysis, Shear in a composite block, Postprocessing with Paraview, Reinforced concrete
- Rendering: Raytracing tutorial, POV-ray, Blender
FEM 
- Материалы: Solid, Fluid, Nonlinear mechanical; Material editor
- Element geometry: Beam (1D), Beam rotation (1D), Shell (2D), Fluid flow (1D)
Ограничения
- Электростатика: Potential
- Жидкости: Initial velocity, Fluid boundary, Flow velocity
- Механика: Fixed, Displacement, Plane rotation, Contact, Transform, Force, Pressure, Self weight, Bearing, Gear, Pulley
- Термические: Initial temperature, Heat flux, Temperature, Heat source
- Сетка: Mesh Netgen, Mesh GMSH, Mesh boundary layer, Mesh region, Mesh group, Nodes set, Mesh to mesh
- Решение: Calculix tools, CalculiX, Elmer, Z88; Уравнения: Heat, Elasticity, Electrostatic, Fluxsolver, Flow; Решатель: Solver control, Solver run
- Результаты: Purge, Show; Постобработка: Apply changes, Pipeline from result, Create warp vector filter, Create scalar clip filter, Create cut filter, Create clip filter, Create data along line filter, Create linearized stresses,
Create data at point filter, Create functions
- Дополнительно: Preferences; FEM Install, FEM Mesh, FEM Solver, FEM CalculiX, FEM Project, FEM Concrete; FEM Element Types
Документация пользователя 
- Установка: Windows, Linux, Mac; Начинающим
- Базовая: О FreeCAD, Верстаки, Настройки, Структура документа, Настройка интерфейса, Свойства, Модель мыши; Учебники
- Верстаки: Arch, Draft, FEM, Image, Inspection, Mesh, OpenSCAD, Part, PartDesign, Path, Plot, Points, Raytracing, Reverse Engineering, Robot, Ship, Sketcher, Spreadsheet, Start, Surface workbench, TechDraw, Test Framework, Web
- Скрипты: Введение в Python, Учебник скриптов FreeCAD, Основы скриптов FreeCAD, Установка макросов, Команды графического интерфейса, Единицы Модули: Создание модулей, Создание верстаков, Добавление верстаков Сетки: Сеточные скрипты, Модуль сеток Детали: Модуль Part, Скрипты топологических данных, PythonOCC, Из Mesh в Part Coin scenegraph: The Coin/Inventor scenegraph, Pivy Интерфейс Qt: PySide, Использование графического интерфейса FreeCAD, Создание диалогов Параметрические объекты: Скриптовые объекты Прочее: Кусочки кода, Функции рисования линий, Встраивание FreeCAD, Библиотека векторной математики FreeCAD, Хаб опытных пользователей, Python, Макросы, Основы скриптов FreeCAD, Topological data scripting
