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material_cohesive_bilinear.hh
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rAKA akantu
material_cohesive_bilinear.hh
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/**
* @file material_cohesive_bilinear.hh
*
* @author Marco Vocialta <marco.vocialta@epfl.ch>
*
* @date creation: Fri Jun 18 2010
* @date last modification: Sun Dec 03 2017
*
* @brief Bilinear cohesive constitutive law
*
*
* Copyright (©) 2010-2018 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_cohesive_linear.hh"
#ifndef AKANTU_MATERIAL_COHESIVE_BILINEAR_HH_
#define AKANTU_MATERIAL_COHESIVE_BILINEAR_HH_
/* -------------------------------------------------------------------------- */
namespace
akantu
{
/**
* Cohesive material bilinear
*
* parameters in the material files :
* - delta_0 : elastic limit displacement (default: 0)
* - sigma_c : critical stress sigma_c (default: 0)
* - beta : weighting parameter for sliding and normal opening (default:
* 0)
* - G_cI : fracture energy for mode I (default: 0)
* - G_cII : fracture energy for mode II (default: 0)
* - penalty : stiffness in compression to prevent penetration
*/
template
<
UInt
spatial_dimension
>
class
MaterialCohesiveBilinear
:
public
MaterialCohesiveLinear
<
spatial_dimension
>
{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public
:
MaterialCohesiveBilinear
(
SolidMechanicsModel
&
model
,
const
ID
&
id
=
""
);
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public
:
/// initialize the material computed parameter
void
initMaterial
()
override
;
/// set material parameters for new elements
void
onElementsAdded
(
const
Array
<
Element
>
&
element_list
,
const
NewElementsEvent
&
event
)
override
;
protected
:
/// constitutive law
void
computeTraction
(
const
Array
<
Real
>
&
normal
,
ElementType
el_type
,
GhostType
ghost_type
=
_not_ghost
)
override
;
/**
* Scale traction sigma_c according to the volume of the
* two elements surrounding an element
*/
void
scaleTraction
(
const
Element
&
el
,
Vector
<
Real
>
&
sigma_c_vec
);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public
:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected
:
/// elastic limit displacement
Real
delta_0
;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
//#include "material_cohesive_elastic_inline_impl.hh"
}
// namespace akantu
#endif
/* AKANTU_MATERIAL_COHESIVE_BILINEAR_HH_ */
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