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FEM: since result object does not depend on analysis mesh, make analysis tools independed from result object

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Bernd Hahnebach
2017-08-30 09:36:57 +02:00
committed by wmayer
parent 01519924d3
commit ea84ed71c0
6 changed files with 179 additions and 161 deletions
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src/Mod/Fem/FemResultTools.py Normal file
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# ***************************************************************************
# * *
# * Copyright (c) 2017 - Bernd Hahnebach <bernd@bimstatik.org> *
# * *
# * 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 *
# * *
# ***************************************************************************
__title__ = "Fem Tools for results"
__author__ = "Bernd Hahnebach"
__url__ = "http://www.freecadweb.org"
## \addtogroup FEM
# @{
import FreeCAD
## Removes all result objects from an analysis group
# @param analysis
def purge_results(analysis):
for m in analysis.Member:
if (m.isDerivedFrom('Fem::FemResultObject')):
if m.Mesh and hasattr(m.Mesh, "Proxy") and m.Mesh.Proxy.Type == "FemMeshResult":
analysis.Document.removeObject(m.Mesh.Name)
analysis.Document.removeObject(m.Name)
FreeCAD.ActiveDocument.recompute()
## Resets result mesh deformation
# @param result object
def reset_mesh_deformation(resultobj):
if FreeCAD.GuiUp:
if resultobj.Mesh:
resultobj.Mesh.ViewObject.applyDisplacement(0.0)
## Resets reslut mesh color
# @param result object
def reset_mesh_color(resultobj):
if FreeCAD.GuiUp:
if resultobj.Mesh:
resultobj.Mesh.ViewObject.NodeColor = {}
resultobj.Mesh.ViewObject.ElementColor = {}
node_numbers = resultobj.Mesh.FemMesh.Nodes.keys()
zero_values = [0] * len(node_numbers)
resultobj.Mesh.ViewObject.setNodeColorByScalars(node_numbers, zero_values)
def show_displacement(resultobj, displacement_factor=0.0):
if FreeCAD.GuiUp:
if resultobj.Mesh.ViewObject.Visibility is False:
resultobj.Mesh.ViewObject.Visibility = True
resultobj.Mesh.ViewObject.setNodeDisplacementByVectors(resultobj.NodeNumbers, resultobj.DisplacementVectors)
resultobj.Mesh.ViewObject.applyDisplacement(displacement_factor)
## Sets mesh color using selected type of results (Sabs by default)
# @param self The python object self
# @param result_type Type of FEM result, allowed are:
# - U1, U2, U3 - deformation
# - Uabs - absolute deformation
# - Sabs - Von Mises stress
# @param limit cutoff value. All values over the limit are treated as equal to the limit. Useful for filtering out hot spots.
def show_result(resultobj, result_type="Sabs", limit=None):
if result_type == "None":
reset_mesh_color(resultobj.Mesh)
return
if resultobj:
if result_type == "Sabs":
values = resultobj.StressValues
elif result_type == "Uabs":
values = resultobj.DisplacementLengths
# TODO the result object does have more result types to show, implement them
else:
match = {"U1": 0, "U2": 1, "U3": 2}
d = zip(*resultobj.DisplacementVectors)
values = list(d[match[result_type]])
show_color_by_scalar_with_cutoff(resultobj, values, limit)
else:
print('Error, No result object given.')
## Sets mesh color using list of values. Internally used by show_result function.
# @param self The python object self
# @param values list of values
# @param limit cutoff value. All values over the limit are treated as equel to the limit. Useful for filtering out hot spots.
def show_color_by_scalar_with_cutoff(resultobj, values, limit=None):
if limit:
filtered_values = []
for v in values:
if v > limit:
filtered_values.append(limit)
else:
filtered_values.append(v)
else:
filtered_values = values
if FreeCAD.GuiUp:
if resultobj.Mesh.ViewObject.Visibility is False:
resultobj.Mesh.ViewObject.Visibility = True
resultobj.Mesh.ViewObject.setNodeColorByScalars(resultobj.NodeNumbers, filtered_values)
## Returns minimum, average and maximum value for provided result type
# @param result object
# @param result_type Type of FEM result, allowed are:
# - U1, U2, U3 - deformation
# - Uabs - absolute deformation
# - Sabs - Von Mises stress
# - Prin1 - Principal stress 1
# - Prin2 - Principal stress 2
# - Prin3 - Principal stress 3
# - MaxSear - maximum shear stress
# - Peeq - peeq strain
# - Temp - Temperature
# - MFlow - MassFlowRate
# - NPress - NetworkPressure
# - None - always return (0.0, 0.0, 0.0)
def get_stats(resultobj, result_type):
m = resultobj
stats = (0.0, 0.0, 0.0)
match_table = {
"U1": (m.Stats[0], m.Stats[1], m.Stats[2]),
"U2": (m.Stats[3], m.Stats[4], m.Stats[5]),
"U3": (m.Stats[6], m.Stats[7], m.Stats[8]),
"Uabs": (m.Stats[9], m.Stats[10], m.Stats[11]),
"Sabs": (m.Stats[12], m.Stats[13], m.Stats[14]),
"MaxPrin": (m.Stats[15], m.Stats[16], m.Stats[17]),
"MidPrin": (m.Stats[18], m.Stats[19], m.Stats[20]),
"MinPrin": (m.Stats[21], m.Stats[22], m.Stats[23]),
"MaxShear": (m.Stats[24], m.Stats[25], m.Stats[26]),
"Peeq": (m.Stats[27], m.Stats[28], m.Stats[29]),
"Temp": (m.Stats[30], m.Stats[31], m.Stats[32]),
"MFlow": (m.Stats[33], m.Stats[34], m.Stats[35]),
"NPress": (m.Stats[36], m.Stats[37], m.Stats[38]),
"None": (0.0, 0.0, 0.0)
}
stats = match_table[result_type]
return stats
## @}