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rAKA/src/model/contact_mechanics/resolution_utils.cc
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resolution_utils.cc
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/**
* @file resolution_utils.cc
*
* @author Mohit Pundir <mohit.pundir@epfl.ch>
*
* @date creation: Mon May 20 2019
* @date last modification: Sun Jun 06 2021
*
* @brief Implementation of various utilities neede for resolution class
*
*
* @section LICENSE
*
* Copyright (©) 2018-2021 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "resolution_utils.hh"
#include "element_class_helper.hh"
/* -------------------------------------------------------------------------- */
namespace akantu {
/* -------------------------------------------------------------------------- */
void ResolutionUtils::computeShapeFunctionMatric(
const ContactElement & element, const Vector<Real> & projection,
Matrix<Real> & shape_matric) {
shape_matric.zero();
const ElementType & type = element.master.type;
auto surface_dimension = Mesh::getSpatialDimension(type);
auto spatial_dimension = surface_dimension + 1;
UInt nb_nodes_per_contact = element.getNbNodes();
AKANTU_DEBUG_ASSERT(spatial_dimension == shape_matric.rows() &&
spatial_dimension * nb_nodes_per_contact ==
shape_matric.cols(),
"Shape Matric dimensions are not correct");
auto && shapes =
ElementClassHelper<_ek_regular>::getN(projection, type);
for (auto i : arange(nb_nodes_per_contact)) {
for (auto j : arange(spatial_dimension)) {
if (i == 0) {
shape_matric(j, i * spatial_dimension + j) = 1;
continue;
}
shape_matric(j, i * spatial_dimension + j) = -shapes[i - 1];
}
}
}
} // namespace akantu
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