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rAKA/src/model/solid_mechanics/solid_mechanics_model_cohesive/materials/constitutive_laws/material_cohesive_linear_uncoupled.hh
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material_cohesive_linear_uncoupled.hh
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/**
* @file material_cohesive_linear.hh
*
* @author Mauro Corrado <mauro.corrado@epfl.ch>
*
* @date creation: Fri Jun 18 2010
* @date last modification: Thu Jan 14 2016
*
* @brief Linear irreversible cohesive law of mixed mode loading with
* random stress definition for extrinsic type
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014, 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 "material_cohesive_linear.hh"
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_MATERIAL_COHESIVE_LINEAR_UNCOUPLED_HH__
#define __AKANTU_MATERIAL_COHESIVE_LINEAR_UNCOUPLED_HH__
/* -------------------------------------------------------------------------- */
namespace akantu {
/**
* Cohesive material linear with two different laws for mode I and
* mode II, for extrinsic case
*
* parameters in the material files :
* - roughness : define the interaction between mode I and mode II (default: 0)
*/
template<UInt spatial_dimension>
class MaterialCohesiveLinearUncoupled : public MaterialCohesiveLinear<spatial_dimension> {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
// typedef MaterialCohesiveLinear<spatial_dimension> MaterialParent;
public:
MaterialCohesiveLinearUncoupled(SolidMechanicsModel & model, const ID & id = "");
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// initialize the material parameters
virtual void initMaterial();
protected:
/// constitutive law
virtual void computeTraction(const Array<Real> & normal,
ElementType el_type,
GhostType ghost_type = _not_ghost);
/// check delta_max for cohesive elements in case of no convergence
/// in the solveStep (only for extrinsic-implicit)
virtual void checkDeltaMax(GhostType ghost_type = _not_ghost);
/// compute tangent stiffness matrix
virtual void computeTangentTraction(const ElementType & el_type,
Array<Real> & tangent_matrix,
const Array<Real> & normal,
GhostType ghost_type);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
/// parameter to tune the interaction between mode II and mode I
Real R;
/// maximum normal displacement
CohesiveInternalField<Real> delta_n_max;
/// maximum tangential displacement
CohesiveInternalField<Real> delta_t_max;
/// damage associated to normal tractions
CohesiveInternalField<Real> damage_n;
/// damage associated to shear tractions
CohesiveInternalField<Real> damage_t;
};
} // akantu
#endif /* __AKANTU_MATERIAL_COHESIVE_LINEAR_UNCOUPLED_HH__ */
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