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FEM: examples, added mutibody face analysis example
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@Sudhanshu-Dubey14 @berndhahnebach
Sudhanshu-Dubey14 authored and berndhahnebach committed Jul 10, 2020
1 parent 1827439 commit 3b2cb1a
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2 changes: 2 additions & 0 deletions src/Mod/Fem/CMakeLists.txt
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Expand Up @@ -55,6 +55,7 @@ SET(FemExamples_SRCS
femexamples/examplesgui.py
femexamples/manager.py
femexamples/material_multiple_bendingbeam_fiveboxes.py
femexamples/material_multiple_bendingbeam_fivefaces.py
femexamples/material_multiple_twoboxes.py
femexamples/material_nl_platewithhole.py
femexamples/rc_wall_2d.py
Expand All @@ -73,6 +74,7 @@ SET(FemExampleMeshes_SRCS
femexamples/meshes/mesh_contact_box_halfcylinder_tetra10.py
femexamples/meshes/mesh_contact_tube_tube_tria3.py
femexamples/meshes/mesh_multibodybeam_tetra10.py
femexamples/meshes/mesh_multibodybeam_tria6.py
femexamples/meshes/mesh_rc_wall_2d_tria6.py
femexamples/meshes/mesh_section_print_tetra10.py
femexamples/meshes/mesh_platewithhole_tetra10.py
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212 changes: 212 additions & 0 deletions src/Mod/Fem/femexamples/material_multiple_bendingbeam_fivefaces.py
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@@ -0,0 +1,212 @@
# ***************************************************************************
# * Copyright (c) 2020 Sudhanshu Dubey <sudhanshu.thethunder@gmail.com> *
# * *
# * This file is part of the FreeCAD CAx development system. *
# * *
# * 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 *
# * *
# ***************************************************************************

# to run the example use:
"""
from femexamples.material_multiple_bendingbeam_fivefaces import setup
setup()
"""

import FreeCAD

import Fem
import ObjectsFem

mesh_name = "Mesh" # needs to be Mesh to work with unit tests


def init_doc(doc=None):
if doc is None:
doc = FreeCAD.newDocument()
return doc


def get_information():
info = {"name": "Multibody Face Analysis",
"meshtype": "solid",
"meshelement": "Tria6",
"constraints": ["fixed", "force"],
"solvers": ["calculix"],
"material": "solid",
"equation": "mechanical"
}
return info


def setup(doc=None, solvertype="ccxtools"):

if doc is None:
doc = init_doc()

# geometry object
# name is important because the other method in this module use obj name
# parts
face_obj1 = doc.addObject('Part::Plane', 'Face1')
face_obj1.Width = 10
face_obj1.Length = 20
face_obj2 = doc.addObject('Part::Plane', 'Face2')
face_obj2.Width = 10
face_obj2.Length = 20
face_obj2.Placement.Base = (20, 0, 0)
face_obj3 = doc.addObject('Part::Plane', 'Face3')
face_obj3.Width = 10
face_obj3.Length = 20
face_obj3.Placement.Base = (40, 0, 0)
face_obj4 = doc.addObject('Part::Plane', 'Face4')
face_obj4.Width = 10
face_obj4.Length = 20
face_obj4.Placement.Base = (60, 0, 0)
face_obj5 = doc.addObject('Part::Plane', 'Face5')
face_obj5.Width = 10
face_obj5.Length = 20
face_obj5.Placement.Base = (80, 0, 0)
doc.recompute()

# make a Shell out of the facees, to be able to remesh with GUI
geom_obj = doc.addObject("Part::MultiFuse", "Fusion")
geom_obj.Shapes = [face_obj1, face_obj2, face_obj3, face_obj4, face_obj5]
if FreeCAD.GuiUp:
face_obj1.ViewObject.hide()
face_obj2.ViewObject.hide()
face_obj3.ViewObject.hide()
face_obj4.ViewObject.hide()
face_obj5.ViewObject.hide()
doc.recompute()

if FreeCAD.GuiUp:
geom_obj.ViewObject.Document.activeView().viewAxonometric()
geom_obj.ViewObject.Document.activeView().fitAll()

# analysis
analysis = ObjectsFem.makeAnalysis(doc, "Analysis")

# solver
if solvertype == "calculix":
solver_object = analysis.addObject(
ObjectsFem.makeSolverCalculix(doc, "SolverCalculiX")
)[0]
elif solvertype == "ccxtools":
solver_object = analysis.addObject(
ObjectsFem.makeSolverCalculixCcxTools(doc, "CalculiXccxTools")
)[0]
solver_object.WorkingDir = u""
else:
FreeCAD.Console.PrintWarning(
"Not known or not supported solver type: {}. "
"No solver object was created.\n".format(solvertype)
)
if solvertype == "calculix" or solvertype == "ccxtools":
solver_object.SplitInputWriter = False
solver_object.AnalysisType = "static"
solver_object.GeometricalNonlinearity = "linear"
solver_object.ThermoMechSteadyState = False
solver_object.MatrixSolverType = "default"
solver_object.IterationsControlParameterTimeUse = False

# shell thickness
analysis.addObject(
ObjectsFem.makeElementGeometry2D(doc, 10, 'ShellThickness')
)

# materials
# material1
material_object1 = analysis.addObject(
ObjectsFem.makeMaterialSolid(doc, 'FemMaterial1')
)[0]
material_object1.References = [(doc.Face3, "Face1")]
mat = material_object1.Material
mat['Name'] = "Concrete-Generic"
mat['YoungsModulus'] = "32000 MPa"
mat['PoissonRatio'] = "0.17"
mat['Density'] = "0 kg/m^3"
material_object1.Material = mat

# material2
material_object2 = analysis.addObject(
ObjectsFem.makeMaterialSolid(doc, 'FemMaterial2')
)[0]
material_object2.References = [
(doc.Face2, "Face1"),
(doc.Face4, "Face1")
]
mat = material_object2.Material
mat['Name'] = "PLA"
mat['YoungsModulus'] = "3640 MPa"
mat['PoissonRatio'] = "0.36"
mat['Density'] = "0 kg/m^3"
material_object2.Material = mat

# material3
material_object3 = analysis.addObject(
ObjectsFem.makeMaterialSolid(doc, 'FemMaterial3')
)[0]
material_object3.References = []
mat = material_object3.Material
mat['Name'] = "Steel-Generic"
mat['YoungsModulus'] = "200000 MPa"
mat['PoissonRatio'] = "0.30"
mat['Density'] = "7900 kg/m^3"
material_object3.Material = mat

# fixed_constraint
fixed_constraint = analysis.addObject(
ObjectsFem.makeConstraintFixed(doc, name="ConstraintFixed")
)[0]
fixed_constraint.References = [
(doc.Face1, "Edge1"),
(doc.Face5, "Edge3")
]

# force_constraint
force_constraint = analysis.addObject(
ObjectsFem.makeConstraintForce(doc, name="ConstraintForce")
)[0]
force_constraint.References = [
(doc.Face1, "Edge4"),
(doc.Face2, "Edge4"),
(doc.Face3, "Edge4"),
(doc.Face4, "Edge4"),
(doc.Face5, "Edge4")
]
force_constraint.Force = 10000.00
force_constraint.Direction = (doc.Face1, ["Edge1"])
force_constraint.Reversed = True

# mesh
from .meshes.mesh_multibodybeam_tria6 import create_nodes, create_elements
fem_mesh = Fem.FemMesh()
control = create_nodes(fem_mesh)
if not control:
FreeCAD.Console.PrintError("Error on creating nodes.\n")
control = create_elements(fem_mesh)
if not control:
FreeCAD.Console.PrintError("Error on creating elements.\n")
femmesh_obj = analysis.addObject(
ObjectsFem.makeMeshGmsh(doc, mesh_name)
)[0]
femmesh_obj.FemMesh = fem_mesh
femmesh_obj.Part = geom_obj
femmesh_obj.SecondOrderLinear = False

doc.recompute()
return doc

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