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material_linear_isotropic_hardening.cc
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rAKA akantu
material_linear_isotropic_hardening.cc
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/**
* @file material_linear_isotropic_hardening.cc
*
* @author Ramin Aghababaei <ramin.aghababaei@epfl.ch>
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Lucas Frerot <lucas.frerot@epfl.ch>
* @author Benjamin Paccaud <benjamin.paccaud@epfl.ch>
* @author Daniel Pino Muñoz <daniel.pinomunoz@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Mon Apr 07 2014
* @date last modification: Sat Dec 02 2017
*
* @brief Specialization of the material class for isotropic finite deformation
* linear hardening plasticity
*
* @section LICENSE
*
* Copyright (©) 2014-2018 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/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "material_linear_isotropic_hardening.hh"
#include "solid_mechanics_model.hh"
namespace
akantu
{
/* -------------------------------------------------------------------------- */
template
<
UInt
dim
>
MaterialLinearIsotropicHardening
<
dim
>::
MaterialLinearIsotropicHardening
(
SolidMechanicsModel
&
model
,
const
ID
&
id
)
:
MaterialPlastic
<
dim
>
(
model
,
id
)
{
AKANTU_DEBUG_IN
();
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
template
<
UInt
spatial_dimension
>
MaterialLinearIsotropicHardening
<
spatial_dimension
>::
MaterialLinearIsotropicHardening
(
SolidMechanicsModel
&
model
,
UInt
dim
,
const
Mesh
&
mesh
,
FEEngine
&
fe_engine
,
const
ID
&
id
)
:
MaterialPlastic
<
spatial_dimension
>
(
model
,
dim
,
mesh
,
fe_engine
,
id
)
{}
/* -------------------------------------------------------------------------- */
template
<
UInt
spatial_dimension
>
void
MaterialLinearIsotropicHardening
<
spatial_dimension
>::
computeStress
(
ElementType
el_type
,
GhostType
ghost_type
)
{
AKANTU_DEBUG_IN
();
MaterialThermal
<
spatial_dimension
>::
computeStress
(
el_type
,
ghost_type
);
// infinitesimal and finite deformation
auto
sigma_th_it
=
this
->
sigma_th
(
el_type
,
ghost_type
).
begin
();
auto
previous_sigma_th_it
=
this
->
sigma_th
.
previous
(
el_type
,
ghost_type
).
begin
();
auto
previous_gradu_it
=
this
->
gradu
.
previous
(
el_type
,
ghost_type
)
.
begin
(
spatial_dimension
,
spatial_dimension
);
auto
previous_stress_it
=
this
->
stress
.
previous
(
el_type
,
ghost_type
)
.
begin
(
spatial_dimension
,
spatial_dimension
);
auto
inelastic_strain_it
=
this
->
inelastic_strain
(
el_type
,
ghost_type
)
.
begin
(
spatial_dimension
,
spatial_dimension
);
auto
previous_inelastic_strain_it
=
this
->
inelastic_strain
.
previous
(
el_type
,
ghost_type
)
.
begin
(
spatial_dimension
,
spatial_dimension
);
auto
iso_hardening_it
=
this
->
iso_hardening
(
el_type
,
ghost_type
).
begin
();
auto
previous_iso_hardening_it
=
this
->
iso_hardening
.
previous
(
el_type
,
ghost_type
).
begin
();
//
// Finite Deformations
//
if
(
this
->
finite_deformation
)
{
auto
previous_piola_kirchhoff_2_it
=
this
->
piola_kirchhoff_2
.
previous
(
el_type
,
ghost_type
)
.
begin
(
spatial_dimension
,
spatial_dimension
);
auto
green_strain_it
=
this
->
green_strain
(
el_type
,
ghost_type
)
.
begin
(
spatial_dimension
,
spatial_dimension
);
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_BEGIN
(
el_type
,
ghost_type
);
auto
&
inelastic_strain_tensor
=
*
inelastic_strain_it
;
auto
&
previous_inelastic_strain_tensor
=
*
previous_inelastic_strain_it
;
auto
&
previous_grad_u
=
*
previous_gradu_it
;
auto
&
previous_sigma
=
*
previous_piola_kirchhoff_2_it
;
auto
&
green_strain
=
*
green_strain_it
;
this
->
template
gradUToGreenStrain
<
spatial_dimension
>
(
grad_u
,
green_strain
);
Matrix
<
Real
>
previous_green_strain
(
spatial_dimension
,
spatial_dimension
);
this
->
template
gradUToGreenStrain
<
spatial_dimension
>
(
previous_grad_u
,
previous_green_strain
);
Matrix
<
Real
>
F_tensor
(
spatial_dimension
,
spatial_dimension
);
this
->
template
gradUToF
<
spatial_dimension
>
(
grad_u
,
F_tensor
);
computeStressOnQuad
(
green_strain
,
previous_green_strain
,
sigma
,
previous_sigma
,
inelastic_strain_tensor
,
previous_inelastic_strain_tensor
,
*
iso_hardening_it
,
*
previous_iso_hardening_it
,
*
sigma_th_it
,
*
previous_sigma_th_it
,
F_tensor
);
++
sigma_th_it
;
++
inelastic_strain_it
;
++
iso_hardening_it
;
++
previous_sigma_th_it
;
//++previous_stress_it;
++
previous_gradu_it
;
++
green_strain_it
;
++
previous_inelastic_strain_it
;
++
previous_iso_hardening_it
;
++
previous_piola_kirchhoff_2_it
;
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_END
;
}
// Infinitesimal deformations
else
{
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_BEGIN
(
el_type
,
ghost_type
);
auto
&
inelastic_strain_tensor
=
*
inelastic_strain_it
;
auto
&
previous_inelastic_strain_tensor
=
*
previous_inelastic_strain_it
;
auto
&
previous_grad_u
=
*
previous_gradu_it
;
auto
&
previous_sigma
=
*
previous_stress_it
;
computeStressOnQuad
(
grad_u
,
previous_grad_u
,
sigma
,
previous_sigma
,
inelastic_strain_tensor
,
previous_inelastic_strain_tensor
,
*
iso_hardening_it
,
*
previous_iso_hardening_it
,
*
sigma_th_it
,
*
previous_sigma_th_it
);
++
sigma_th_it
;
++
inelastic_strain_it
;
++
iso_hardening_it
;
++
previous_sigma_th_it
;
++
previous_stress_it
;
++
previous_gradu_it
;
++
previous_inelastic_strain_it
;
++
previous_iso_hardening_it
;
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_END
;
}
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
template
<
UInt
spatial_dimension
>
void
MaterialLinearIsotropicHardening
<
spatial_dimension
>::
computeTangentModuli
(
const
ElementType
&
el_type
,
Array
<
Real
>
&
tangent_matrix
,
GhostType
ghost_type
)
{
AKANTU_DEBUG_IN
();
auto
previous_gradu_it
=
this
->
gradu
.
previous
(
el_type
,
ghost_type
)
.
begin
(
spatial_dimension
,
spatial_dimension
);
auto
previous_stress_it
=
this
->
stress
.
previous
(
el_type
,
ghost_type
)
.
begin
(
spatial_dimension
,
spatial_dimension
);
auto
iso_hardening
=
this
->
iso_hardening
(
el_type
,
ghost_type
).
begin
();
MATERIAL_TANGENT_QUADRATURE_POINT_LOOP_BEGIN
(
tangent_matrix
);
computeTangentModuliOnQuad
(
tangent
,
grad_u
,
*
previous_gradu_it
,
sigma
,
*
previous_stress_it
,
*
iso_hardening
);
++
previous_gradu_it
;
++
previous_stress_it
;
++
iso_hardening
;
MATERIAL_TANGENT_QUADRATURE_POINT_LOOP_END
;
this
->
was_stiffness_assembled
=
true
;
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
INSTANTIATE_MATERIAL
(
plastic_linear_isotropic_hardening
,
MaterialLinearIsotropicHardening
);
}
// namespace akantu
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