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stress_based_weight_function.hh
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Fri, Aug 23, 01:30
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rAKA akantu
stress_based_weight_function.hh
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/**
* @file stress_based_weight_function.hh
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Cyprien Wolff <cyprien.wolff@epfl.ch>
*
* @date creation: Mon Aug 24 2015
* @date last modification: Thu Oct 15 2015
*
* @brief Removed damaged weight function for non local materials
*
* @section LICENSE
*
* Copyright (©) 2015 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 "base_weight_function.hh"
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_STRESS_BASED_WEIGHT_FUNCTION_HH__
#define __AKANTU_STRESS_BASED_WEIGHT_FUNCTION_HH__
namespace
akantu
{
/* -------------------------------------------------------------------------- */
/* Stress Based Weight */
/* -------------------------------------------------------------------------- */
/// based on based on Giry et al.: Stress-based nonlocal damage model,
/// IJSS, 48, 2011
class
StressBasedWeightFunction
:
public
BaseWeightFunction
{
public
:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
StressBasedWeightFunction
(
NonLocalManager
&
manager
);
/* -------------------------------------------------------------------------- */
/* Base Weight Function inherited methods */
/* -------------------------------------------------------------------------- */
void
init
()
override
;
inline
void
updateInternals
()
override
;
void
updatePrincipalStress
(
GhostType
ghost_type
);
inline
void
updateQuadraturePointsCoordinates
(
ElementTypeMapArray
<
Real
>
&
quadrature_points_coordinates
);
inline
Real
operator
()(
Real
r
,
const
IntegrationPoint
&
q1
,
const
IntegrationPoint
&
q2
);
/// computation of ellipsoid
inline
Real
computeRhoSquare
(
Real
r
,
Vector
<
Real
>
&
eigs
,
Matrix
<
Real
>
&
eigenvects
,
Vector
<
Real
>
&
x_s
);
protected
:
inline
void
setInternal
();
private
:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
/// tensile strength
Real
ft
;
/// prinicipal stresses
ElementTypeMapReal
*
stress_diag
;
/// for preselection of types (optimization)
ElementTypeMapReal
*
selected_stress_diag
;
/// principal directions
ElementTypeMapReal
*
stress_base
;
/// lenght intrinisic to the material
ElementTypeMapReal
*
characteristic_size
;
};
#if defined (AKANTU_INCLUDE_INLINE_IMPL)
# include "stress_based_weight_function_inline_impl.cc"
#endif
}
// akantu
#endif
/* __AKANTU_STRESS_BASED_WEIGHT_FUNCTION_HH__ */
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