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test_patch_westergaard.py
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Thu, May 2, 17:29

test_patch_westergaard.py
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# -*- coding: utf-8 -*-
#
# Copyright (©) 2016-2022 EPFL (École Polytechnique Fédérale de Lausanne),
# Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
from __future__ import division, print_function
from numpy.linalg import norm
import tamaas as tm
def test_patch_westergaard(patch_westergaard):
model = patch_westergaard.model
solution = patch_westergaard.solution
pressure = patch_westergaard.pressure
shape = (model.boundary_shape + [tm.type_traits[model.type].components])
# Setting the correct pressure component
traction = model.traction.reshape(shape)[..., -1]
traction[:] = pressure
# solveNeumann() doesn't do anything on volume models
if model.type == tm.model_type.volume_2d:
tm.ModelFactory.registerVolumeOperators(model)
model.operators['boussinesq'](model.traction, model.displacement)
else:
model.solveNeumann()
if model.type in [tm.model_type.volume_1d, tm.model_type.volume_2d]:
output_displ = model.displacement[0, ..., -1]
else:
output_displ = model.displacement.reshape(shape)[..., -1]
error = norm(solution - output_displ) / norm(solution)
assert error < 1e-15 and norm(solution) > 1e-15, \
"Neumann error = {}".format(error)
# Removing model types where no dirichlet is defined yet
if model.type in {tm.model_type.surface_1d,
tm.model_type.surface_2d,
tm.model_type.volume_2d}:
return
traction[:] = 0
output_displ[:] = solution
model.solveDirichlet()
error = norm(pressure - traction) / norm(pressure)
assert error < 1e-15, "Dirichlet error = {}".format(error)

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