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material_hyper_elasto_plastic1.cc
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material_hyper_elasto_plastic1.cc
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/**
* @file material_hyper_elasto_plastic1.cc
*
* @author Till Junge <till.junge@epfl.ch>
*
* @date 21 Feb 2018
*
* @brief implementation for MaterialHyperElastoPlastic1
*
* Copyright © 2018 Till Junge
*
* µSpectre 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, or (at
* your option) any later version.
*
* µSpectre 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
* General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with µSpectre; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* * Boston, MA 02111-1307, USA.
*
* Additional permission under GNU GPL version 3 section 7
*
* If you modify this Program, or any covered work, by linking or combining it
* with proprietary FFT implementations or numerical libraries, containing parts
* covered by the terms of those libraries' licenses, the licensors of this
* Program grant you additional permission to convey the resulting work.
*/
#include "materials/material_hyper_elasto_plastic1.hh"
namespace muSpectre {
//----------------------------------------------------------------------------//
template <Dim_t DimS, Dim_t DimM>
MaterialHyperElastoPlastic1<DimS, DimM>::MaterialHyperElastoPlastic1(
std::string name, Real young, Real poisson, Real tau_y0, Real H)
: Parent{name},
plast_flow_field{
make_statefield<StateField<ScalarField<LColl_t, Real>>>(
"cumulated plastic flow εₚ", this->internal_fields)},
F_prev_field{make_statefield<
StateField<TensorField<LColl_t, Real, secondOrder, DimM>>>(
"Previous placement gradient Fᵗ", this->internal_fields)},
be_prev_field{make_statefield<
StateField<TensorField<LColl_t, Real, secondOrder, DimM>>>(
"Previous left Cauchy-Green deformation bₑᵗ",
this->internal_fields)},
young{young}, poisson{poisson}, lambda{Hooke::compute_lambda(young,
poisson)},
mu{Hooke::compute_mu(young, poisson)},
K{Hooke::compute_K(young, poisson)}, tau_y0{tau_y0}, H{H},
// the factor .5 comes from equation (18) in Geers 2003
// (https://doi.org/10.1016/j.cma.2003.07.014)
C{0.5 * Hooke::compute_C_T4(lambda, mu)},
internal_variables{F_prev_field.get_map(), be_prev_field.get_map(),
plast_flow_field.get_map()} {}
/* ---------------------------------------------------------------------- */
template <Dim_t DimS, Dim_t DimM>
void MaterialHyperElastoPlastic1<DimS, DimM>::save_history_variables() {
this->plast_flow_field.cycle();
this->F_prev_field.cycle();
this->be_prev_field.cycle();
}
/* ---------------------------------------------------------------------- */
template <Dim_t DimS, Dim_t DimM>
void MaterialHyperElastoPlastic1<DimS, DimM>::initialise() {
Parent::initialise();
this->F_prev_field.get_map().current() =
Eigen::Matrix<Real, DimM, DimM>::Identity();
this->be_prev_field.get_map().current() =
Eigen::Matrix<Real, DimM, DimM>::Identity();
this->save_history_variables();
}
template class MaterialHyperElastoPlastic1<twoD, twoD>;
template class MaterialHyperElastoPlastic1<twoD, threeD>;
template class MaterialHyperElastoPlastic1<threeD, threeD>;
} // namespace muSpectre

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