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material_viscoplastic.hh
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Fri, Sep 6, 13:43
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Sun, Sep 8, 13:43 (2 d)
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rAKA akantu
material_viscoplastic.hh
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/**
* Copyright (©) 2018-2023 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This file is part of Akantu
*
* 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 "aka_common.hh"
#include "aka_voigthelper.hh"
#include "material_plastic.hh"
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_MATERIAL_VISCOPLASTIC_HH_
#define AKANTU_MATERIAL_VISCOPLASTIC_HH_
namespace
akantu
{
/**
* Material plastic isotropic
*
* parameters in the material files :
* - h : Hardening parameter (default: 0)
* - sigmay : Yield stress
* - rate : Rate sensitivity
* - edot0 : Reference strain rate
*
* - ts: Time step
*/
template
<
Int
spatial_dimension
>
class
MaterialViscoPlastic
:
public
MaterialPlastic
<
spatial_dimension
>
{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public
:
MaterialViscoPlastic
(
SolidMechanicsModel
&
model
,
const
ID
&
id
=
""
);
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public
:
/// constitutive law for all element of a type
virtual
void
computeStress
(
ElementType
el_type
,
GhostType
ghost_type
=
_not_ghost
);
/// compute the tangent stiffness matrix for an element type
void
computeTangentModuli
(
ElementType
el_type
,
Array
<
Real
>
&
tangent_matrix
,
GhostType
ghost_type
=
_not_ghost
);
protected
:
inline
void
computeStressOnQuad
(
const
Matrix
<
Real
>
&
grad_u
,
const
Matrix
<
Real
>
&
previous_grad_u
,
Matrix
<
Real
>
&
sigma
,
const
Matrix
<
Real
>
&
previous_sigma
,
Matrix
<
Real
>
&
inelastic_strain
,
const
Matrix
<
Real
>
&
previous_inelastic_strain
,
Real
&
iso_hardening
)
const
;
inline
void
computeTangentModuliOnQuad
(
Matrix
<
Real
>
&
tangent
,
const
Matrix
<
Real
>
&
grad_u
,
const
Matrix
<
Real
>
&
previous_grad_u
,
const
Matrix
<
Real
>
&
sigma_tensor
,
const
Matrix
<
Real
>
&
previous_sigma_tensor
,
const
Real
&
iso_hardening
)
const
;
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public
:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private
:
/// Rate sensitivity component (rate)
Real
rate
;
/// Reference strain rate (edot0)
Real
edot0
;
/// Time step (ts)
Real
ts
;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#include "material_viscoplastic_inline_impl.hh"
}
// namespace akantu
#endif
/* AKANTU_MATERIAL_VISCOPLASTIC_HH_ */
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