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material_orthotropic_damage_iterative.hh
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Fri, May 3, 09:24

material_orthotropic_damage_iterative.hh
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/**
* @file material_orthtropic_damage_iterative.hh
*
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
*
* @date Sun Mar 8 12:54:30 2015
*
* @brief Specialization of the class material orthotropic damage to
* damage only one gauss point at a time and propagate damage in a
* linear way. Max principal stress criterion is used as a failure
* criterion.
*
*
* Copyright (©) 2010-2012, 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "material.hh"
#include "material_orthotropic_damage.hh"
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_MATERIAL_ORTHOTROPIC_DAMAGE_ITERATIVE_HH_
#define AKANTU_MATERIAL_ORTHOTROPIC_DAMAGE_ITERATIVE_HH_
namespace akantu {
/**
* Material damage iterative
*
* parameters in the material files :
* - Sc
*/
template <Int spatial_dimension>
class MaterialOrthotropicDamageIterative
: public MaterialOrthotropicDamage<spatial_dimension> {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
MaterialOrthotropicDamageIterative(SolidMechanicsModel & model,
const ID & id = "");
virtual ~MaterialOrthotropicDamageIterative(){};
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// virtual void updateInternalParameters();
virtual void computeAllStresses(GhostType ghost_type = _not_ghost);
/// update internal field damage
UInt updateDamage();
/// update energies after damage has been updated
virtual void updateEnergiesAfterDamage(ElementType el_type);
protected:
/// constitutive law for all element of a type
virtual void computeStress(ElementType el_type,
GhostType ghost_type = _not_ghost);
/// compute the equivalent stress on each Gauss point (i.e. the max prinicpal
/// stress) and normalize it by the tensile strength
void computeNormalizedEquivalentStress(const Array<Real> & grad_u,
ElementType el_type,
GhostType ghost_type = _not_ghost);
/// find max normalized equivalent stress
void findMaxNormalizedEquivalentStress(ElementType el_type,
GhostType ghost_type = _not_ghost);
inline void computeDamageAndStressOnQuad(Matrix<Real> & sigma,
Matrix<Real> & one_minus_D,
Matrix<Real> & root_one_minus_D,
Matrix<Real> & damage,
Matrix<Real> & first_term,
Matrix<Real> & third_term);
/* ------------------------------------------------------------------------ */
/* DataAccessor inherited members */
/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
/// get max normalized equivalent stress
AKANTU_GET_MACRO(NormMaxEquivalentStress, norm_max_equivalent_stress, Real);
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
/// resistance to damage
RandomInternalField<Real> Sc;
/// internal field to store equivalent stress on each Gauss point
InternalField<Real> equivalent_stress;
/// internal field to store the direction of the current damage frame
InternalField<Real> stress_dir;
/// damage increment
Real prescribed_dam;
/// maximum equivalent stress
Real norm_max_equivalent_stress;
/// define damage threshold at which damage will be set to 1
Real dam_threshold;
/// quadrature point with highest equivalent Stress
IntegrationPoint q_max;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#include "material_orthotropic_damage_iterative_inline_impl.hh"
} // namespace akantu
#endif /* AKANTU_MATERIAL_ORTHOTROPIC_DAMAGE_ITERATIVE_HH_ */

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