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structural_mechanics_model_mass.cc
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Fri, May 3, 00:18

structural_mechanics_model_mass.cc
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/**
* @file structural_mechanics_model_mass.cc
*
* @author Lucas Frerot <lucas.frerot@epfl.ch>
* @author Sébastien Hartmann <sebastien.hartmann@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Mon Jul 07 2014
* @date last modification: Thu Mar 04 2021
*
* @brief function handling mass computation
*
*
* @section LICENSE
*
* Copyright (©) 2014-2021 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 "integrator_gauss.hh"
#include "material.hh"
#include "shape_structural.hh"
#include "structural_mechanics_model.hh"
/* -------------------------------------------------------------------------- */
namespace akantu {
class ComputeRhoFunctorStruct {
public:
explicit ComputeRhoFunctorStruct(const StructuralMechanicsModel & model)
: model(model){};
void operator()(Matrix<Real> & rho, const Element & element) const {
Real mat_rho = model.getMaterialByElement(element).rho;
rho.set(mat_rho);
}
private:
const StructuralMechanicsModel & model;
};
/* -------------------------------------------------------------------------- */
void StructuralMechanicsModel::assembleMassMatrix() {
AKANTU_DEBUG_IN();
if (not need_to_reassemble_mass) {
return;
}
if (not getDOFManager().hasMatrix("M")) {
getDOFManager().getNewMatrix("M", getMatrixType("M"));
}
this->getDOFManager().zeroMatrix("M");
assembleMassMatrix(_not_ghost);
need_to_reassemble_mass = false;
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void StructuralMechanicsModel::assembleMassMatrix(GhostType ghost_type) {
AKANTU_DEBUG_IN();
auto & fem = getFEEngineClass<MyFEEngineType>();
ComputeRhoFunctorStruct compute_rho(*this);
for (auto type :
mesh.elementTypes(spatial_dimension, ghost_type, _ek_structural)) {
fem.assembleFieldMatrix(compute_rho, "M", "displacement",
this->getDOFManager(), type, ghost_type);
}
AKANTU_DEBUG_OUT();
}
} // namespace akantu

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