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structural_element_bernoulli_beam_3.hh
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structural_element_bernoulli_beam_3.hh
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/**
* @file structural_element_bernoulli_beam_3.hh
*
* @author Fabian Barras <fabian.barras@epfl.ch>
* @author Lucas Frerot <lucas.frerot@epfl.ch>
* @author Sébastien Hartmann <sebastien.hartmann@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Damien Spielmann <damien.spielmann@epfl.ch>
*
* @date creation: Wed Oct 11 2017
* @date last modification: Tue Feb 20 2018
*
* @brief Specific functions for bernoulli beam 3d
*
*
* Copyright (©) 2016-2018 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/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_STRUCTURAL_ELEMENT_BERNOULLI_BEAM_3_HH_
#define AKANTU_STRUCTURAL_ELEMENT_BERNOULLI_BEAM_3_HH_
#include "structural_mechanics_model.hh"
namespace akantu {
/* -------------------------------------------------------------------------- */
template <>
void StructuralMechanicsModel::computeTangentModuli<_bernoulli_beam_3>(
Array<Real> & tangent_moduli) {
UInt nb_element = getFEEngine().getMesh().getNbElement(_bernoulli_beam_3);
UInt nb_quadrature_points =
getFEEngine().getNbIntegrationPoints(_bernoulli_beam_3);
UInt tangent_size = 4;
tangent_moduli.zero();
Array<Real>::matrix_iterator D_it =
tangent_moduli.begin(tangent_size, tangent_size);
for (UInt e = 0; e < nb_element; ++e) {
UInt mat = element_material(_bernoulli_beam_3, _not_ghost)(e);
Real E = materials[mat].E;
Real A = materials[mat].A;
Real Iz = materials[mat].Iz;
Real Iy = materials[mat].Iy;
Real GJ = materials[mat].GJ;
for (UInt q = 0; q < nb_quadrature_points; ++q, ++D_it) {
Matrix<Real> & D = *D_it;
D(0, 0) = E * A;
D(1, 1) = E * Iz;
D(2, 2) = E * Iy;
D(3, 3) = GJ;
}
}
}
} // namespace akantu
#endif /* AKANTU_STRUCTURAL_ELEMENT_BERNOULLI_BEAM_3_HH_ */

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