FEM: add reinforced concrete 2D wall example

src/Mod/Fem/CMakeLists.txt

@@ -36,11 +36,13 @@ SET(FemExamples_SRCS
     femexamples/__init__.py
     femexamples/ccx_cantilever_std.py
     femexamples/manager.py
+    femexamples/rc_wall_2d.py
 )
 
 SET(FemExampleMeshes_SRCS
     femexamples/meshes/__init__.py
     femexamples/meshes/mesh_canticcx_tetra10.py
+    femexamples/meshes/mesh_rc_wall_2d_tria6.py
 )
 
 SET(FemInOut_SRCS

src/Mod/Fem/femexamples/manager.py

@@ -75,6 +75,7 @@ def run_all():
     run_ccx_cantileverfaceload()
     run_ccx_cantilevernodeload()
     run_ccx_cantileverprescribeddisplacement()
+    run_rcwall2d()
 
 
 def run_ccx_cantileverfaceload(solver=None, base_name=None):
@@ -119,6 +120,20 @@ def run_ccx_cantileverprescribeddisplacement(solver=None, base_name=None):
     return doc
 
 
+def run_rcwall2d(solver=None, base_name=None):
+
+    from femexamples.rc_wall_2d import setup_rcwall2d as setup
+    doc = setup()
+
+    if base_name is None:
+        base_name = 'RC_FIB_Wall_2D'
+        if solver is not None:
+            base_name += ('_' + solver)
+    run_analysis(doc, base_name)
+
+    return doc
+
+
 '''
 from femexamples.manager import *
 
@@ -132,4 +147,6 @@ doc = run_ccx_cantilevernodeload('calculix')
 doc = run_ccx_cantilevernodeload('ccxtools')
 doc = run_ccx_cantilevernodeload('z88')
 
+doc = run_rcwall2d()
+
 '''

src/Mod/Fem/femexamples/rc_wall_2d.py

@@ -0,0 +1,165 @@
+# ***************************************************************************
+# *   Copyright (c) 2019 Bernd Hahnebach <bernd@bimstatik.org>              *
+# *                                                                         *
+# *   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.                                 *
+# *                                                                         *
+# *   FreeCAD 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 FreeCAD; if not, write to the Free Software        *
+# *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+# *   USA                                                                   *
+# *                                                                         *
+# ***************************************************************************
+
+
+import FreeCAD
+import ObjectsFem
+import Fem
+
+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 setup_rcwall2d(doc=None, solver='ccxtools'):
+    # setup reinfoced wall in 2D
+
+    if doc is None:
+        doc = init_doc()
+
+    # part
+    from FreeCAD import Vector as vec
+    import Part
+    from Part import makeLine as ln
+
+    v1 = vec(0, -2000, 0)
+    v2 = vec(500, -2000, 0)
+    v3 = vec(500, 0, 0)
+    v4 = vec(3500, 0, 0)
+    v5 = vec(3500, -2000, 0)
+    v6 = vec(4000, -2000, 0)
+    v7 = vec(4000, 2000, 0)
+    v8 = vec(0, 2000, 0)
+    l1 = ln(v1, v2)
+    l2 = ln(v2, v3)
+    l3 = ln(v3, v4)
+    l4 = ln(v4, v5)
+    l5 = ln(v5, v6)
+    l6 = ln(v6, v7)
+    l7 = ln(v7, v8)
+    l8 = ln(v8, v1)
+    rcwall = doc.addObject("Part::Feature", "FIB_Wall")
+    rcwall.Shape = Part.Face(Part.Wire([l1, l2, l3, l4, l5, l6, l7, l8]))
+
+    # analysis
+    analysis = ObjectsFem.makeAnalysis(doc, 'Analysis')
+
+    solver
+    # TODO How to pass multiple solver for one analysis in one doc
+    if solver is None:
+        pass  # no solver is added
+    elif solver is 'calculix':
+        solver = analysis.addObject(
+            ObjectsFem.makeSolverCalculix(doc, 'SolverCalculiX')
+        )[0]
+        solver.AnalysisType = 'static'
+        solver.GeometricalNonlinearity = 'linear'
+        solver.ThermoMechSteadyState = False
+        solver.MatrixSolverType = 'default'
+        solver.IterationsControlParameterTimeUse = False
+    elif solver is 'ccxtools':
+        solver = analysis.addObject(
+            ObjectsFem.makeSolverCalculixCcxTools(doc, 'CalculiXccxTools')
+        )[0]
+        solver.AnalysisType = 'static'
+        solver.GeometricalNonlinearity = 'linear'
+        solver.ThermoMechSteadyState = False
+        solver.MatrixSolverType = 'default'
+        solver.IterationsControlParameterTimeUse = False
+        solver.WorkingDir = u''
+
+    # shell thickness
+    thickness = analysis.addObject(
+        ObjectsFem.makeElementGeometry2D(doc, 0, 'ShellThickness')
+    )[0]
+    thickness.Thickness = 150.0
+
+    # material
+    matrixprop = {}
+    matrixprop['Name'] = "Concrete-EN-C35/45"
+    matrixprop['YoungsModulus'] = "32000 MPa"
+    matrixprop['PoissonRatio'] = "0.17"
+    matrixprop['CompressiveStrength'] = "15.75 MPa"
+    # make some hint on the possible angle units in material system
+    matrixprop['AngleOfFriction'] = "30 deg"
+    matrixprop['Density'] = '2500 kg/m^3'
+    reinfoprop = {}
+    reinfoprop['Name'] = "Reinforcement-FIB-B500"
+    reinfoprop['YieldStrength'] = "315 MPa"
+    # not an official FreeCAD material property
+    reinfoprop['ReinforcementRatio'] = "0.0"
+    material_reinforced = analysis.addObject(
+        ObjectsFem.makeMaterialReinforced(doc, 'MaterialReinforced')
+    )[0]
+    material_reinforced.Material = matrixprop
+    material_reinforced.Reinforcement = reinfoprop
+
+    # fixed_constraint
+    fixed_constraint = analysis.addObject(
+        ObjectsFem.makeConstraintFixed(doc, name="ConstraintFixed")
+    )[0]
+    fixed_constraint.References = [(rcwall, "Edge1"), (rcwall, "Edge5")]
+
+    # force constraint
+    force_constraint = doc.Analysis.addObject(
+        ObjectsFem.makeConstraintForce(doc, name="ConstraintForce")
+    )[0]
+    force_constraint.References = [(rcwall, "Edge7")]
+    force_constraint.Force = 1000000.0
+    force_constraint.Direction = (rcwall, ["Edge8"])
+    force_constraint.Reversed = False
+
+    # displacement_constraint
+    displacement_constraint = doc.Analysis.addObject(
+        ObjectsFem.makeConstraintDisplacement(doc, name="ConstraintDisplacmentPrescribed")
+    )[0]
+    displacement_constraint.References = [(rcwall, "Face1")]
+    displacement_constraint.zFix = True
+
+    # mesh
+    from femexamples.meshes.mesh_rc_wall_2d_tria6 import create_nodes, create_elements
+    fem_mesh = Fem.FemMesh()
+    control = create_nodes(fem_mesh)
+    if not control:
+        print('ERROR on creating nodes')
+    control = create_elements(fem_mesh)
+    if not control:
+        print('ERROR on creating elements')
+    femmesh_obj = analysis.addObject(
+        doc.addObject('Fem::FemMeshObject', mesh_name)
+    )[0]
+    femmesh_obj.FemMesh = fem_mesh
+
+    doc.recompute()
+    return doc
+
+
+'''
+from femexamples import rc_wall_2d as rc
+rc.setup_rcwall2d()
+
+'''