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rAKA akantu
test_material_fixtures.hh
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/**
* @file test_material_fixtures.hh
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
*
* @date creation: Fri Nov 17 2017
* @date last modification: Tue Feb 20 2018
*
* @brief Fixture for material tests
*
*
* Copyright (©) 2016-2018 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 "test_gtest_utils.hh"
/* -------------------------------------------------------------------------- */
#include <material_elastic.hh>
#include <solid_mechanics_model.hh>
/* -------------------------------------------------------------------------- */
#include <gtest/gtest.h>
#include <random>
#include <type_traits>
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
/* -------------------------------------------------------------------------- */
template
<
typename
T
>
class
FriendMaterial
:
public
T
{
public
:
~
FriendMaterial
()
=
default
;
FriendMaterial
(
SolidMechanicsModel
&
model
,
const
ID
&
id
=
"material"
)
:
T
(
model
,
id
)
{
gen
.
seed
(
::
testing
::
GTEST_FLAG
(
random_seed
));
}
virtual
void
testComputeStress
()
{
AKANTU_TO_IMPLEMENT
();
};
virtual
void
testComputeTangentModuli
()
{
AKANTU_TO_IMPLEMENT
();
};
virtual
void
testEnergyDensity
()
{
AKANTU_TO_IMPLEMENT
();
};
virtual
void
testCelerity
()
{
AKANTU_TO_IMPLEMENT
();
}
virtual
void
setParams
()
{}
virtual
void
SetUp
()
{
this
->
setParams
();
this
->
initMaterial
();
}
virtual
void
TearDown
()
{}
inline
Matrix
<
Real
>
getDeviatoricStrain
(
Real
intensity
);
inline
Matrix
<
Real
>
getHydrostaticStrain
(
Real
intensity
);
inline
Matrix
<
Real
>
getComposedStrain
(
Real
intensity
);
inline
const
Matrix
<
Real
>
reverseRotation
(
Matrix
<
Real
>
mat
,
Matrix
<
Real
>
rotation_matrix
)
{
Matrix
<
Real
>
R
=
rotation_matrix
;
Matrix
<
Real
>
m2
=
mat
*
R
;
Matrix
<
Real
>
m1
=
R
.
transpose
();
return
m1
*
m2
;
};
inline
const
Matrix
<
Real
>
applyRotation
(
Matrix
<
Real
>
mat
,
const
Matrix
<
Real
>
rotation_matrix
)
{
Matrix
<
Real
>
R
=
rotation_matrix
;
Matrix
<
Real
>
m2
=
mat
*
R
.
transpose
();
Matrix
<
Real
>
m1
=
R
;
return
m1
*
m2
;
};
inline
Vector
<
Real
>
getRandomVector
();
inline
Matrix
<
Real
>
getRandomRotation
();
protected
:
std
::
mt19937
gen
;
};
/* -------------------------------------------------------------------------- */
template
<
typename
T
>
Matrix
<
Real
>
FriendMaterial
<
T
>::
getDeviatoricStrain
(
Real
intensity
)
{
Matrix
<
Real
>
dev
=
{{
0.
,
1.
,
2.
},
{
1.
,
0.
,
3.
},
{
2.
,
3.
,
0.
}};
dev
*=
intensity
;
return
dev
;
}
/* -------------------------------------------------------------------------- */
template
<
typename
T
>
Matrix
<
Real
>
FriendMaterial
<
T
>::
getHydrostaticStrain
(
Real
intensity
)
{
Matrix
<
Real
>
dev
=
{{
1
,
0
,
0
},
{
0
,
1
,
0
},
{
0
,
0
,
1
}};
dev
*=
intensity
;
return
dev
;
}
/* -------------------------------------------------------------------------- */
template
<
typename
T
>
Matrix
<
Real
>
FriendMaterial
<
T
>::
getComposedStrain
(
Real
intensity
)
{
Matrix
<
Real
>
s
=
FriendMaterial
<
T
>::
getHydrostaticStrain
(
intensity
)
+
FriendMaterial
<
T
>::
getDeviatoricStrain
(
intensity
);
s
*=
intensity
;
return
s
;
}
/* -------------------------------------------------------------------------- */
template
<
typename
T
>
Vector
<
Real
>
FriendMaterial
<
T
>::
getRandomVector
()
{
auto
dim
=
this
->
spatial_dimension
;
std
::
uniform_real_distribution
<
Real
>
dis
;
Vector
<
Real
>
vector
(
dim
,
0.
);
while
(
vector
.
norm
()
<
1e-9
)
{
for
(
auto
s
:
arange
(
dim
))
vector
(
s
)
=
dis
(
gen
);
}
return
vector
;
}
/* -------------------------------------------------------------------------- */
template
<
typename
T
>
Matrix
<
Real
>
FriendMaterial
<
T
>::
getRandomRotation
()
{
auto
dim
=
this
->
spatial_dimension
;
Matrix
<
Real
>
rotation
(
dim
,
dim
);
Vector
<
Real
>
v1
=
rotation
(
0
);
v1
=
getRandomVector
().
normalize
();
if
(
dim
==
2
)
{
Vector
<
Real
>
v1_
=
{
v1
(
0
),
v1
(
1
),
0
};
Vector
<
Real
>
v2_
(
3
);
Vector
<
Real
>
v3_
=
{
0
,
0
,
1
};
v2_
.
crossProduct
(
v3_
,
v1_
);
Vector
<
Real
>
v2
=
rotation
(
1
);
v2
(
0
)
=
v2_
(
0
);
v2
(
1
)
=
v2_
(
1
);
}
if
(
dim
==
3
)
{
auto
v2
=
getRandomVector
();
v2
=
(
v2
-
v2
.
dot
(
v1
)
*
v1
).
normalize
();
Vector
<
Real
>
v3
(
3
);
v3
.
crossProduct
(
v1
,
v2
);
rotation
(
1
)
=
v2
;
rotation
(
2
)
=
v3
;
}
//#define debug_
#if defined(debug_)
if
(
dim
==
2
)
rotation
=
Matrix
<
Real
>
{{
1.
,
0.
},
{
0.
,
1.
}};
if
(
dim
==
3
)
rotation
=
Matrix
<
Real
>
{{
1.
,
0.
,
0.
},
{
0.
,
1.
,
0.
},
{
0.
,
0.
,
1.
}};
#endif
rotation
=
rotation
.
transpose
();
return
rotation
;
}
/* -------------------------------------------------------------------------- */
template
<
typename
T
,
class
Model
>
class
TestMaterialBaseFixture
:
public
::
testing
::
Test
{
public
:
using
mat_class
=
typename
T
::
mat_class
;
void
SetUp
()
override
{
constexpr
auto
spatial_dimension
=
T
::
Dim
;
mesh
=
std
::
make_unique
<
Mesh
>
(
spatial_dimension
);
model
=
std
::
make_unique
<
Model
>
(
*
mesh
);
material
=
std
::
make_unique
<
friend_class
>
(
*
model
);
material
->
SetUp
();
}
void
TearDown
()
override
{
material
->
TearDown
();
material
.
reset
(
nullptr
);
model
.
reset
(
nullptr
);
mesh
.
reset
(
nullptr
);
}
using
friend_class
=
FriendMaterial
<
mat_class
>
;
protected
:
std
::
unique_ptr
<
Mesh
>
mesh
;
std
::
unique_ptr
<
Model
>
model
;
std
::
unique_ptr
<
friend_class
>
material
;
};
/* -------------------------------------------------------------------------- */
template
<
template
<
UInt
>
class
T
,
UInt
_Dim
>
struct
Traits
{
using
mat_class
=
T
<
_Dim
>
;
static
constexpr
UInt
Dim
=
_Dim
;
};
/* -------------------------------------------------------------------------- */
template
<
typename
T
>
using
TestMaterialFixture
=
TestMaterialBaseFixture
<
T
,
SolidMechanicsModel
>
;
/* -------------------------------------------------------------------------- */
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