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material_damage_linear_inline_impl.hh
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Wed, Aug 14, 23:22
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rAKA akantu
material_damage_linear_inline_impl.hh
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/**
* @file material_damage_linear_inline_impl.hh
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Marion Estelle Chambart <marion.chambart@epfl.ch>
*
*
* @brief Implementation of the inline functions of the material damage linear
*
*
* Copyright (©) 2010-2012, 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
*/
/* -------------------------------------------------------------------------- */
template
<
UInt
spatial_dimension
>
inline
void
MaterialDamageLinear
<
spatial_dimension
>::
computeStressOnQuad
(
Matrix
<
Real
>
&
grad_u
,
Matrix
<
Real
>
&
sigma
,
Real
&
dam
,
Real
&
K
)
{
Real
Fdiag
[
3
];
Real
Fdiagp
[
3
];
Math
::
matrix33_eigenvalues
(
grad_u
.
storage
(),
Fdiag
);
Fdiagp
[
0
]
=
std
::
max
(
0.
,
Fdiag
[
0
]);
Fdiagp
[
1
]
=
std
::
max
(
0.
,
Fdiag
[
1
]);
Fdiagp
[
2
]
=
std
::
max
(
0.
,
Fdiag
[
2
]);
Real
Ehat
=
sqrt
(
Fdiagp
[
0
]
*
Fdiagp
[
0
]
+
Fdiagp
[
1
]
*
Fdiagp
[
1
]
+
Fdiagp
[
2
]
*
Fdiagp
[
2
]);
MaterialElastic
<
spatial_dimension
>::
computeStressOnQuad
(
grad_u
,
sigma
);
Real
Fd
=
Ehat
-
K
;
if
(
Fd
>
0
)
{
dam
=
(
Ehat
-
Epsmin
)
/
(
Epsmax
-
Epsmin
)
*
(
Ehat
/
Epsmax
);
dam
=
std
::
min
(
dam
,
1.
);
K
=
Ehat
;
}
sigma
*=
1
-
dam
;
}
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