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material_igfem_saw_tooth_damage.hh
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rAKA akantu
material_igfem_saw_tooth_damage.hh
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/**
* @file material_igfem_saw_tooth_damage.hh
*
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
*
*
* @brief Linear saw-tooth softening material model for IGFEM elements
*
*
* Copyright (©) 2010-2012, 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
*/
/* -------------------------------------------------------------------------- */
#include "material_damage.hh"
#include "material_igfem_elastic.hh"
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_MATERIAL_IGFEM_SAW_TOOTH_DAMAGE_HH_
#define AKANTU_MATERIAL_IGFEM_SAW_TOOTH_DAMAGE_HH_
namespace
akantu
{
template
<
UInt
spatial_dimension
>
class
MaterialIGFEMSawToothDamage
:
public
MaterialDamage
<
spatial_dimension
,
MaterialIGFEMElastic
>
{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
private
:
typedef
MaterialDamage
<
spatial_dimension
,
MaterialIGFEMElastic
>
Parent
;
public
:
typedef
std
::
pair
<
Element
,
Element
>
ElementPair
;
MaterialIGFEMSawToothDamage
(
SolidMechanicsModel
&
model
,
const
ID
&
id
=
""
);
MaterialIGFEMSawToothDamage
(
SolidMechanicsModel
&
model
,
UInt
dim
,
const
Mesh
&
mesh
,
FEEngine
&
fe_engine
,
const
ID
&
id
=
""
);
virtual
~
MaterialIGFEMSawToothDamage
()
{}
protected
:
void
initialize
();
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public
:
virtual
void
initMaterial
();
/// virtual void updateInternalParameters();
virtual
void
computeAllStresses
(
GhostType
ghost_type
=
_not_ghost
);
/// update internal field damage
virtual
UInt
updateDamage
();
UInt
updateDamage
(
UInt
quad_index
,
const
Real
eq_stress
,
ElementType
el_type
,
GhostType
ghost_type
);
/// update energies after damage has been updated
// virtual void updateEnergiesAfterDamage(ElementType el_type, GhostType
// ghost_typ);
virtual
void
onBeginningSolveStep
(
const
AnalysisMethod
&
method
){};
virtual
void
onEndSolveStep
(
const
AnalysisMethod
&
method
){};
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
virtual
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
,
Real
&
dam
);
protected
:
/* ------------------------------------------------------------------------ */
/* MeshEventHandler inherited members */
/* ------------------------------------------------------------------------ */
public
:
/* ------------------------------------------------------------------------ */
virtual
void
onElementsAdded
(
const
Array
<
Element
>
&
element_list
,
const
NewElementsEvent
&
event
);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public
:
/// get max normalized equivalent stress
AKANTU_GET_MACRO
(
NormMaxEquivalentStress
,
norm_max_equivalent_stress
,
Real
);
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected
:
/// resistance to damage
IGFEMInternalField
<
Real
>
Sc
;
/// internal field to store equivalent stress on each Gauss point
IGFEMInternalField
<
Real
>
equivalent_stress
;
/// damage increment
Real
prescribed_dam
;
/// maximum equivalent stress
Real
norm_max_equivalent_stress
;
/// deviation from max stress at which Gauss point will still get damaged
Real
dam_tolerance
;
/// define damage threshold at which damage will be set to 1
Real
dam_threshold
;
/// maximum damage value
Real
max_damage
;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#include "material_igfem_saw_tooth_damage_inline_impl.hh"
}
// namespace akantu
#endif
/* AKANTU_MATERIAL_IGFEM_SAW_TOOTH_DAMAGE_HH_ */
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