FEM: examples, add node load calculation example
This commit is contained in:
Sudhanshu Dubey
committed by
Bernd Hahnebach
Bernd Hahnebach
parent
5681af9206
commit
f4980e73cb
@@ -61,6 +61,7 @@ SET(FemExamples_SRCS
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femexamples/material_nl_platewithhole.py
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femexamples/rc_wall_2d.py
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femexamples/square_pipe_end_twisted_edgeforces.py
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femexamples/square_pipe_end_twisted_nodeforces.py
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femexamples/thermomech_bimetall.py
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femexamples/thermomech_flow1d.py
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femexamples/thermomech_spine.py
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442
src/Mod/Fem/femexamples/square_pipe_end_twisted_nodeforces.py
Normal file
442
src/Mod/Fem/femexamples/square_pipe_end_twisted_nodeforces.py
Normal file
@@ -0,0 +1,442 @@
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# ***************************************************************************
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# * Copyright (c) 2020 Sudhanshu Dubey <sudhanshu.thethunder@gmail.com> *
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# * *
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# * This file is part of the FreeCAD CAx development system. *
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# * *
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# * This program is free software; you can redistribute it and/or modify *
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# * it under the terms of the GNU Lesser General Public License (LGPL) *
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# * as published by the Free Software Foundation; either version 2 of *
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# * the License, or (at your option) any later version. *
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# * for detail see the LICENCE text file. *
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# * *
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# * This program is distributed in the hope that it will be useful, *
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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# * GNU Library General Public License for more details. *
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# * *
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# * You should have received a copy of the GNU Library General Public *
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# * License along with this program; if not, write to the Free Software *
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# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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# * USA *
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# * *
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# ***************************************************************************
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# to run the example use:
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"""
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from femexamples.square_pipe_end_twisted_nodeforces import setup
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setup()
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"""
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import FreeCAD
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from FreeCAD import Vector
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import Fem
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import ObjectsFem
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import Part
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mesh_name = "Mesh" # needs to be Mesh to work with unit tests
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def init_doc(doc=None):
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if doc is None:
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doc = FreeCAD.newDocument()
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return doc
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def get_information():
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info = {"name": "Square Pipe End Twisted Nodeforces",
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"meshtype": "solid",
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"meshelement": "Tria6",
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"constraints": ["force", "fixed"],
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"solvers": ["calculix"],
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"material": "Solid",
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"equation": "mechanical"
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}
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return info
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def setup(doc=None, solvertype="ccxtools"):
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if doc is None:
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doc = init_doc()
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# geometry object
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# name is important because the other method in this module use obj name
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l1 = Part.makeLine((-142.5, -142.5, 0), (142.5, -142.5, 0))
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l2 = Part.makeLine((142.5, -142.5, 0), (142.5, 142.5, 0))
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l3 = Part.makeLine((142.5, 142.5, 0), (-142.5, 142.5, 0))
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l4 = Part.makeLine((-142.5, 142.5, 0), (-142.5, -142.5, 0))
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wire = Part.Wire([l1, l2, l3, l4])
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shape = wire.extrude(Vector(0, 0, 1000))
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geom_obj = doc.addObject('Part::Feature', 'SquareTube')
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geom_obj.Shape = shape
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points_forces = []
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points_forces.append(Part.Vertex(-142.5, 142.5, 0.0))
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points_forces.append(Part.Vertex(-142.5, -142.5, 0.0))
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points_forces.append(Part.Vertex(-142.5, 95.0, 0.0))
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points_forces.append(Part.Vertex(-142.5, 47.5, 0.0))
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points_forces.append(Part.Vertex(-142.5, 0.0, 0.0))
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points_forces.append(Part.Vertex(-142.5, -47.5, 0.0))
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points_forces.append(Part.Vertex(-142.5, -95.0, 0.0))
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points_forces.append(Part.Vertex(142.5, -142.5, 0.0))
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points_forces.append(Part.Vertex(-95.0, -142.5, 0.0))
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points_forces.append(Part.Vertex(-47.5, -142.5, 0.0))
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points_forces.append(Part.Vertex(0.0, -142.5, 0.0))
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points_forces.append(Part.Vertex(47.5, -142.5, 0.0))
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points_forces.append(Part.Vertex(95.0, -142.5, 0.0))
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points_forces.append(Part.Vertex(142.5, 142.5, 0.0))
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points_forces.append(Part.Vertex(142.5, -95.0, 0.0))
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points_forces.append(Part.Vertex(142.5, -47.5, 0.0))
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points_forces.append(Part.Vertex(142.5, 0.0, 0.0))
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points_forces.append(Part.Vertex(142.5, 47.5, 0.0))
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points_forces.append(Part.Vertex(142.5, 95.0, 0.0))
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points_forces.append(Part.Vertex(95.0, 142.5, 0.0))
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points_forces.append(Part.Vertex(47.5, 142.5, 0.0))
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points_forces.append(Part.Vertex(0.0, 142.5, 0.0))
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points_forces.append(Part.Vertex(-47.5, 142.5, 0.0))
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points_forces.append(Part.Vertex(-95.0, 142.5, 0.0))
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points_forces.append(Part.Vertex(-142.5, 118.75, 0.0))
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points_forces.append(Part.Vertex(-142.5, -118.75, 0.0))
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points_forces.append(Part.Vertex(-142.5, 71.25, 0.0))
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points_forces.append(Part.Vertex(-142.5, 23.75, 0.0))
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points_forces.append(Part.Vertex(-142.5, -23.75, 0.0))
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points_forces.append(Part.Vertex(-142.5, -71.25, 0.0))
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points_forces.append(Part.Vertex(118.75, -142.5, 0.0))
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points_forces.append(Part.Vertex(-71.25, -142.5, 0.0))
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points_forces.append(Part.Vertex(-118.75, -142.5, 0.0))
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points_forces.append(Part.Vertex(-23.75, -142.5, 0.0))
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points_forces.append(Part.Vertex(23.75, -142.5, 0.0))
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points_forces.append(Part.Vertex(71.25, -142.5, 0.0))
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points_forces.append(Part.Vertex(142.5, 118.75, 0.0))
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points_forces.append(Part.Vertex(142.5, -71.25, 0.0))
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points_forces.append(Part.Vertex(142.5, -118.75, 0.0))
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points_forces.append(Part.Vertex(142.5, -23.75, 0.0))
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points_forces.append(Part.Vertex(142.5, 23.75, 0.0))
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points_forces.append(Part.Vertex(142.5, 71.25, 0.0))
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points_forces.append(Part.Vertex(71.25, 142.5, 0.0))
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points_forces.append(Part.Vertex(118.75, 142.5, 0.0))
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points_forces.append(Part.Vertex(23.75, 142.5, 0.0))
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points_forces.append(Part.Vertex(-23.75, 142.5, 0.0))
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points_forces.append(Part.Vertex(-71.25, 142.5, 0.0))
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points_forces.append(Part.Vertex(-118.75, 142.5, 0.0))
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points_fixes = []
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points_fixes.append(Part.Vertex(-142.5, 142.5, 1000.0))
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points_fixes.append(Part.Vertex(-142.5, -142.5, 1000.0))
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points_fixes.append(Part.Vertex(-142.5, 95.0, 1000.0))
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points_fixes.append(Part.Vertex(-142.5, 47.5, 1000.0))
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points_fixes.append(Part.Vertex(-142.5, 0.0, 1000.0))
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points_fixes.append(Part.Vertex(-142.5, -47.5, 1000.0))
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points_fixes.append(Part.Vertex(-142.5, -95.0, 1000.0))
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points_fixes.append(Part.Vertex(142.5, -142.5, 1000.0))
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points_fixes.append(Part.Vertex(-95.0, -142.5, 1000.0))
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points_fixes.append(Part.Vertex(-47.5, -142.5, 1000.0))
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points_fixes.append(Part.Vertex(0.0, -142.5, 1000.0))
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points_fixes.append(Part.Vertex(47.5, -142.5, 1000.0))
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points_fixes.append(Part.Vertex(95.0, -142.5, 1000.0))
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points_fixes.append(Part.Vertex(142.5, 142.5, 1000.0))
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points_fixes.append(Part.Vertex(142.5, -95.0, 1000.0))
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points_fixes.append(Part.Vertex(142.5, -47.5, 1000.0))
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points_fixes.append(Part.Vertex(142.5, 0.0, 1000.0))
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points_fixes.append(Part.Vertex(142.5, 47.5, 1000.0))
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points_fixes.append(Part.Vertex(142.5, 95.0, 1000.0))
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points_fixes.append(Part.Vertex(95.0, 142.5, 1000.0))
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points_fixes.append(Part.Vertex(47.5, 142.5, 1000.0))
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points_fixes.append(Part.Vertex(0.0, 142.5, 1000.0))
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points_fixes.append(Part.Vertex(-47.5, 142.5, 1000.0))
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points_fixes.append(Part.Vertex(-95.0, 142.5, 1000.0))
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points_fixes.append(Part.Vertex(-142.5, 118.75, 1000.0))
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points_fixes.append(Part.Vertex(-142.5, -118.75, 1000.0))
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points_fixes.append(Part.Vertex(-142.5, 71.25, 1000.0))
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points_fixes.append(Part.Vertex(-142.5, 23.75, 1000.0))
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points_fixes.append(Part.Vertex(-142.5, -23.75, 1000.0))
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points_fixes.append(Part.Vertex(-142.5, -71.25, 1000.0))
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points_fixes.append(Part.Vertex(118.75, -142.5, 1000.0))
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points_fixes.append(Part.Vertex(-71.25, -142.5, 1000.0))
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points_fixes.append(Part.Vertex(-118.75, -142.5, 1000.0))
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points_fixes.append(Part.Vertex(-23.75, -142.5, 1000.0))
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points_fixes.append(Part.Vertex(23.75, -142.5, 1000.0))
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points_fixes.append(Part.Vertex(71.25, -142.5, 1000.0))
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points_fixes.append(Part.Vertex(142.5, 118.75, 1000.0))
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points_fixes.append(Part.Vertex(142.5, -71.25, 1000.0))
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points_fixes.append(Part.Vertex(142.5, -118.75, 1000.0))
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points_fixes.append(Part.Vertex(142.5, -23.75, 1000.0))
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points_fixes.append(Part.Vertex(142.5, 23.75, 1000.0))
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points_fixes.append(Part.Vertex(142.5, 71.25, 1000.0))
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points_fixes.append(Part.Vertex(71.25, 142.5, 1000.0))
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points_fixes.append(Part.Vertex(118.75, 142.5, 1000.0))
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points_fixes.append(Part.Vertex(23.75, 142.5, 1000.0))
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points_fixes.append(Part.Vertex(-23.75, 142.5, 1000.0))
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points_fixes.append(Part.Vertex(-71.25, 142.5, 1000.0))
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points_fixes.append(Part.Vertex(-118.75, 142.5, 1000.0))
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forces_obj = doc.addObject('Part::Feature', 'Forces')
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forces_obj.Shape = Part.makeCompound(points_forces)
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fixes_obj = doc.addObject('Part::Feature', 'Fixes')
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fixes_obj.Shape = Part.makeCompound(points_fixes)
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doc.recompute()
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if FreeCAD.GuiUp:
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forces_obj.ViewObject.PointColor = (1.0, 0.0, 0.0, 0.0)
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forces_obj.ViewObject.PointSize = 10.0
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fixes_obj.ViewObject.PointColor = (1.0, 0.0, 0.0, 0.0)
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fixes_obj.ViewObject.PointSize = 10.0
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geom_obj.ViewObject.Document.activeView().viewAxonometric()
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geom_obj.ViewObject.Document.activeView().fitAll()
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# analysis
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analysis = ObjectsFem.makeAnalysis(doc, "Analysis")
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# solver
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if solvertype == "calculix":
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solver_object = analysis.addObject(
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ObjectsFem.makeSolverCalculix(doc, "SolverCalculiX")
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)[0]
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elif solvertype == "ccxtools":
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solver_object = analysis.addObject(
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ObjectsFem.makeSolverCalculixCcxTools(doc, "CalculiXccxTools")
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)[0]
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solver_object.WorkingDir = u""
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else:
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FreeCAD.Console.PrintWarning(
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"Not known or not supported solver type: {}. "
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"No solver object was created.\n".format(solvertype)
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)
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if solvertype == "calculix" or solvertype == "ccxtools":
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solver_object.SplitInputWriter = False
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solver_object.AnalysisType = "static"
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solver_object.GeometricalNonlinearity = "linear"
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solver_object.ThermoMechSteadyState = False
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solver_object.MatrixSolverType = "default"
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solver_object.IterationsControlParameterTimeUse = False
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# shell thickness
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thickness = analysis.addObject(
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ObjectsFem.makeElementGeometry2D(doc, 0, "ShellThickness")
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)[0]
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thickness.Thickness = 15.0
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# material
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material_object = analysis.addObject(
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ObjectsFem.makeMaterialSolid(doc, "FemMaterial")
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)[0]
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mat = material_object.Material
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mat["Name"] = "Steel-Generic"
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mat["YoungsModulus"] = "200000 MPa"
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mat["PoissonRatio"] = "0.30"
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mat["Density"] = "7900 kg/m^3"
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material_object.Material = mat
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# fixed_constraint
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fixed_constraint = analysis.addObject(
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ObjectsFem.makeConstraintFixed(doc, name="ConstraintFixed"))[0]
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fixed_constraint.References = [
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(doc.Fixes, 'Vertex6'),
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(doc.Fixes, 'Vertex15'),
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(doc.Fixes, 'Vertex5'),
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(doc.Fixes, 'Vertex29'),
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(doc.Fixes, 'Vertex42'),
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(doc.Fixes, 'Vertex30'),
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(doc.Fixes, 'Vertex9'),
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(doc.Fixes, 'Vertex31'),
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(doc.Fixes, 'Vertex33'),
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(doc.Fixes, 'Vertex32'),
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(doc.Fixes, 'Vertex3'),
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(doc.Fixes, 'Vertex34'),
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(doc.Fixes, 'Vertex46'),
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(doc.Fixes, 'Vertex1'),
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(doc.Fixes, 'Vertex36'),
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(doc.Fixes, 'Vertex11'),
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(doc.Fixes, 'Vertex38'),
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(doc.Fixes, 'Vertex12'),
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(doc.Fixes, 'Vertex39'),
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(doc.Fixes, 'Vertex13'),
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(doc.Fixes, 'Vertex40'),
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(doc.Fixes, 'Vertex16'),
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(doc.Fixes, 'Vertex35'),
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(doc.Fixes, 'Vertex14'),
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(doc.Fixes, 'Vertex47'),
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(doc.Fixes, 'Vertex20'),
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(doc.Fixes, 'Vertex37'),
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(doc.Fixes, 'Vertex18'),
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(doc.Fixes, 'Vertex41'),
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(doc.Fixes, 'Vertex17'),
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(doc.Fixes, 'Vertex10'),
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(doc.Fixes, 'Vertex26'),
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(doc.Fixes, 'Vertex43'),
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(doc.Fixes, 'Vertex21'),
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(doc.Fixes, 'Vertex44'),
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(doc.Fixes, 'Vertex19'),
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(doc.Fixes, 'Vertex4'),
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(doc.Fixes, 'Vertex28'),
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(doc.Fixes, 'Vertex48'),
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(doc.Fixes, 'Vertex22'),
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(doc.Fixes, 'Vertex8'),
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(doc.Fixes, 'Vertex23'),
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(doc.Fixes, 'Vertex7'),
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(doc.Fixes, 'Vertex24'),
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(doc.Fixes, 'Vertex45'),
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(doc.Fixes, 'Vertex27'),
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(doc.Fixes, 'Vertex2'),
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(doc.Fixes, 'Vertex25')]
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# force_constraint1
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force_constraint1 = analysis.addObject(
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ObjectsFem.makeConstraintForce(doc, name="ConstraintForce1"))[0]
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force_constraint1.References = [(forces_obj, 'Vertex1'), (forces_obj, 'Vertex14')]
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force_constraint1.Force = 5555.56
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force_constraint1.Direction = (doc.SquareTube, ["Edge9"])
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force_constraint1.Reversed = False
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# force_constraint2
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force_constraint2 = analysis.addObject(
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ObjectsFem.makeConstraintForce(doc, name="ConstraintForce2"))[0]
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force_constraint2.References = [(forces_obj, 'Vertex2'), (forces_obj, 'Vertex8')]
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force_constraint2.Force = 5555.56
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force_constraint2.Direction = (doc.SquareTube, ["Edge3"])
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force_constraint2.Reversed = False
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# force_constraint3
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force_constraint3 = analysis.addObject(
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ObjectsFem.makeConstraintForce(doc, name="ConstraintForce3"))[0]
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force_constraint3.References = [
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(forces_obj, 'Vertex20'),
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(forces_obj, 'Vertex21'),
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(forces_obj, 'Vertex22'),
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(forces_obj, 'Vertex23'),
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(forces_obj, 'Vertex24'), ]
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force_constraint3.Force = 27777.78
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force_constraint3.Direction = (doc.SquareTube, ["Edge9"])
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force_constraint3.Reversed = False
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# force_constraint4
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force_constraint4 = analysis.addObject(
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ObjectsFem.makeConstraintForce(doc, name="ConstraintForce4"))[0]
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force_constraint4.References = [
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(forces_obj, 'Vertex9'),
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(forces_obj, 'Vertex10'),
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(forces_obj, 'Vertex11'),
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(forces_obj, 'Vertex12'),
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(forces_obj, 'Vertex13'), ]
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force_constraint4.Force = 27777.78
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force_constraint4.Direction = (doc.SquareTube, ["Edge3"])
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force_constraint4.Reversed = False
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# force_constraint5
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force_constraint5 = analysis.addObject(
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ObjectsFem.makeConstraintForce(doc, name="ConstraintForce5"))[0]
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force_constraint5.References = [
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(forces_obj, 'Vertex43'),
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(forces_obj, 'Vertex44'),
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(forces_obj, 'Vertex45'),
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(forces_obj, 'Vertex46'),
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(forces_obj, 'Vertex47'),
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(forces_obj, 'Vertex48'), ]
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force_constraint5.Force = 66666.67
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force_constraint5.Direction = (doc.SquareTube, ["Edge9"])
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force_constraint5.Reversed = False
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# force_constraint6
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force_constraint6 = analysis.addObject(
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ObjectsFem.makeConstraintForce(doc, name="ConstraintForce6"))[0]
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force_constraint6.References = [
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(forces_obj, 'Vertex31'),
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(forces_obj, 'Vertex32'),
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(forces_obj, 'Vertex33'),
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(forces_obj, 'Vertex34'),
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(forces_obj, 'Vertex35'),
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(forces_obj, 'Vertex36'), ]
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force_constraint6.Force = 66666.67
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force_constraint6.Direction = (doc.SquareTube, ["Edge3"])
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force_constraint6.Reversed = False
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# force_constraint7
|
||||
force_constraint7 = analysis.addObject(
|
||||
ObjectsFem.makeConstraintForce(doc, name="ConstraintForce7"))[0]
|
||||
force_constraint7.References = [(forces_obj, 'Vertex1'), (forces_obj, 'Vertex2')]
|
||||
force_constraint7.Force = 5555.56
|
||||
force_constraint7.Direction = (doc.SquareTube, ["Edge11"])
|
||||
force_constraint7.Reversed = False
|
||||
|
||||
# force_constraint8
|
||||
force_constraint8 = analysis.addObject(
|
||||
ObjectsFem.makeConstraintForce(doc, name="ConstraintForce8"))[0]
|
||||
force_constraint8.References = [(forces_obj, 'Vertex8'), (forces_obj, 'Vertex14')]
|
||||
force_constraint8.Force = 5555.56
|
||||
force_constraint8.Direction = (doc.SquareTube, ["Edge6"])
|
||||
force_constraint8.Reversed = False
|
||||
|
||||
# force_constraint9
|
||||
force_constraint9 = analysis.addObject(
|
||||
ObjectsFem.makeConstraintForce(doc, name="ConstraintForce9"))[0]
|
||||
force_constraint9.References = [
|
||||
(forces_obj, 'Vertex3'),
|
||||
(forces_obj, 'Vertex4'),
|
||||
(forces_obj, 'Vertex5'),
|
||||
(forces_obj, 'Vertex6'),
|
||||
(forces_obj, 'Vertex7'), ]
|
||||
force_constraint9.Force = 27777.78
|
||||
force_constraint9.Direction = (doc.SquareTube, ["Edge11"])
|
||||
force_constraint9.Reversed = False
|
||||
|
||||
# force_constraint10
|
||||
force_constraint10 = analysis.addObject(
|
||||
ObjectsFem.makeConstraintForce(doc, name="ConstraintForce10"))[0]
|
||||
force_constraint10.References = [
|
||||
(forces_obj, 'Vertex15'),
|
||||
(forces_obj, 'Vertex16'),
|
||||
(forces_obj, 'Vertex17'),
|
||||
(forces_obj, 'Vertex18'),
|
||||
(forces_obj, 'Vertex19'), ]
|
||||
force_constraint10.Force = 27777.78
|
||||
force_constraint10.Direction = (doc.SquareTube, ["Edge6"])
|
||||
force_constraint10.Reversed = False
|
||||
|
||||
# force_constraint11
|
||||
force_constraint11 = analysis.addObject(
|
||||
ObjectsFem.makeConstraintForce(doc, name="ConstraintForce11"))[0]
|
||||
force_constraint11.References = [
|
||||
(forces_obj, 'Vertex25'),
|
||||
(forces_obj, 'Vertex26'),
|
||||
(forces_obj, 'Vertex27'),
|
||||
(forces_obj, 'Vertex28'),
|
||||
(forces_obj, 'Vertex29'),
|
||||
(forces_obj, 'Vertex30'), ]
|
||||
force_constraint11.Force = 66666.67
|
||||
force_constraint11.Direction = (doc.SquareTube, ["Edge11"])
|
||||
force_constraint11.Reversed = False
|
||||
|
||||
# force_constraint12
|
||||
force_constraint12 = analysis.addObject(
|
||||
ObjectsFem.makeConstraintForce(doc, name="ConstraintForce12"))[0]
|
||||
force_constraint12.References = [
|
||||
(forces_obj, 'Vertex37'),
|
||||
(forces_obj, 'Vertex38'),
|
||||
(forces_obj, 'Vertex39'),
|
||||
(forces_obj, 'Vertex40'),
|
||||
(forces_obj, 'Vertex41'),
|
||||
(forces_obj, 'Vertex42'), ]
|
||||
force_constraint12.Force = 66666.67
|
||||
force_constraint12.Direction = (doc.SquareTube, ["Edge6"])
|
||||
force_constraint12.Reversed = False
|
||||
|
||||
# mesh
|
||||
from .meshes.mesh_square_pipe_end_twisted_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
|
||||
Reference in New Issue
Block a user