166 lines
5.9 KiB
Python
166 lines
5.9 KiB
Python
# ***************************************************************************
|
|
# * 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 *
|
|
# * *
|
|
# ***************************************************************************
|
|
|
|
# to run the example use:
|
|
"""
|
|
from femexamples.rc_wall_2d import setup
|
|
setup()
|
|
|
|
"""
|
|
|
|
|
|
import FreeCAD
|
|
from FreeCAD import Vector as vec
|
|
|
|
import Fem
|
|
import ObjectsFem
|
|
import Part
|
|
from Part import makeLine as ln
|
|
|
|
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(doc=None, solvertype="ccxtools"):
|
|
# setup reinfoced wall in 2D
|
|
|
|
if doc is None:
|
|
doc = init_doc()
|
|
|
|
# geom objects
|
|
|
|
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)
|
|
geom_obj = doc.addObject("Part::Feature", "FIB_Wall")
|
|
geom_obj.Shape = Part.Face(Part.Wire([l1, l2, l3, l4, l5, l6, l7, l8]))
|
|
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 = analysis.addObject(
|
|
ObjectsFem.makeSolverCalculix(doc, "SolverCalculiX")
|
|
)[0]
|
|
elif solvertype == "ccxtools":
|
|
solver = analysis.addObject(
|
|
ObjectsFem.makeSolverCalculixCcxTools(doc, "CalculiXccxTools")
|
|
)[0]
|
|
solver.WorkingDir = u""
|
|
if solvertype == "calculix" or solvertype == "ccxtools":
|
|
solver.SplitInputWriter = False
|
|
solver.AnalysisType = "static"
|
|
solver.GeometricalNonlinearity = "linear"
|
|
solver.ThermoMechSteadyState = False
|
|
solver.MatrixSolverType = "default"
|
|
solver.IterationsControlParameterTimeUse = False
|
|
|
|
# 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 = [(geom_obj, "Edge1"), (geom_obj, "Edge5")]
|
|
|
|
# force constraint
|
|
force_constraint = doc.Analysis.addObject(
|
|
ObjectsFem.makeConstraintForce(doc, name="ConstraintForce")
|
|
)[0]
|
|
force_constraint.References = [(geom_obj, "Edge7")]
|
|
force_constraint.Force = 1000000.0
|
|
force_constraint.Direction = (geom_obj, ["Edge8"])
|
|
force_constraint.Reversed = False
|
|
|
|
# displacement_constraint
|
|
displacement_constraint = doc.Analysis.addObject(
|
|
ObjectsFem.makeConstraintDisplacement(doc, name="ConstraintDisplacmentPrescribed")
|
|
)[0]
|
|
displacement_constraint.References = [(geom_obj, "Face1")]
|
|
displacement_constraint.zFix = True
|
|
|
|
# mesh
|
|
from .meshes.mesh_rc_wall_2d_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(
|
|
doc.addObject("Fem::FemMeshObject", mesh_name)
|
|
)[0]
|
|
femmesh_obj.FemMesh = fem_mesh
|
|
|
|
doc.recompute()
|
|
return doc
|