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rAKA/src/model/solid_mechanics/solid_mechanics_model_cohesive/materials/constitutive_laws/material_cohesive_linear_friction.hh
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material_cohesive_linear_friction.hh
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/**
* @file material_cohesive_linear_friction.hh
*
* @author Mauro Corrado <mauro.corrado@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Fri Jun 18 2010
* @date last modification: Tue Jan 12 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_FRICTION_HH__
#define __AKANTU_MATERIAL_COHESIVE_LINEAR_FRICTION_HH__
/* -------------------------------------------------------------------------- */
namespace akantu {
/**
* Cohesive material linear with friction force
*
* parameters in the material files :
* - mu : friction coefficient
* - penalty_for_friction : Penalty parameter for the friction behavior
*/
template<UInt spatial_dimension>
class MaterialCohesiveLinearFriction : public MaterialCohesiveLinear<spatial_dimension> {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
using MaterialParent = MaterialCohesiveLinear<spatial_dimension>;
public:
MaterialCohesiveLinearFriction(SolidMechanicsModel & model, const ID & id = "");
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// initialize the material parameters
void initMaterial() override;
protected:
/// constitutive law
void computeTraction(const Array<Real> & normal, ElementType el_type,
GhostType ghost_type = _not_ghost) override;
/// check delta_max for cohesive elements in case of no convergence
/// in the solveStep (only for extrinsic-implicit)
void checkDeltaMax(GhostType ghost_type = _not_ghost) override;
/// compute tangent stiffness matrix
void computeTangentTraction(const ElementType & el_type,
Array<Real> & tangent_matrix,
const Array<Real> & normal,
GhostType ghost_type) override;
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
/// maximum value of the friction coefficient
Real mu_max;
/// penalty parameter for the friction law
Real friction_penalty;
/// history parameter for the friction law
CohesiveInternalField<Real> residual_sliding;
/// friction force
CohesiveInternalField<Real> friction_force;
};
} // akantu
#endif /* __AKANTU_MATERIAL_COHESIVE_LINEAR_FRICTION_HH__ */
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