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test_explicit_dynamic.cc
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Created
Tue, Sep 24, 06:08
Size
3 KB
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text/x-c
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Thu, Sep 26, 06:08 (2 d)
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blob
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rAKA akantu
test_explicit_dynamic.cc
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/* -------------------------------------------------------------------------- */
#include "contact_mechanics_model.hh"
#include "coupler_solid_contact.hh"
#include "non_linear_solver.hh"
#include "solid_mechanics_model.hh"
#include "surface_selector.hh"
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
int
main
(
int
argc
,
char
*
argv
[])
{
UInt
max_steps
=
20000
;
Real
max_weight
=
0.02
;
UInt
damping_interval
=
10
;
Real
damping_ratio
=
0.9
;
std
::
string
mesh_file
=
"flat_on_flat.msh"
;
std
::
string
material_file
=
"material.dat"
;
const
UInt
spatial_dimension
=
2
;
initialize
(
material_file
,
argc
,
argv
);
Mesh
mesh
(
spatial_dimension
);
mesh
.
read
(
mesh_file
);
CouplerSolidContact
coupler
(
mesh
);
auto
&
solid
=
coupler
.
getSolidMechanicsModel
();
auto
&
contact
=
coupler
.
getContactMechanicsModel
();
auto
&&
material_selector
=
std
::
make_shared
<
MeshDataMaterialSelector
<
std
::
string
>>
(
"physical_names"
,
solid
);
solid
.
setMaterialSelector
(
material_selector
);
solid
.
initFull
(
_analysis_method
=
_explicit_lumped_mass
);
contact
.
initFull
(
_analysis_method
=
_explicit_dynamic_contact
);
auto
&&
surface_selector
=
std
::
make_shared
<
PhysicalSurfaceSelector
>
(
mesh
);
contact
.
getContactDetector
().
setSurfaceSelector
(
surface_selector
);
solid
.
applyBC
(
BC
::
Dirichlet
::
FixedValue
(
0.0
,
_x
),
"bottom"
);
solid
.
applyBC
(
BC
::
Dirichlet
::
FixedValue
(
0.0
,
_y
),
"bottom"
);
Vector
<
Real
>
weight
=
{
0
,
-
max_weight
};
solid
.
applyBC
(
BC
::
Neumann
::
FromSameDim
(
weight
),
"top"
);
coupler
.
initFull
(
_analysis_method
=
_explicit_dynamic_contact
);
Real
time_step
=
solid
.
getStableTimeStep
();
time_step
*=
0.1
;
coupler
.
setTimeStep
(
time_step
);
coupler
.
setBaseName
(
"flat-on-flat"
);
coupler
.
addDumpFieldVector
(
"displacement"
);
coupler
.
addDumpFieldVector
(
"normals"
);
coupler
.
addDumpFieldVector
(
"contact_force"
);
coupler
.
addDumpFieldVector
(
"external_force"
);
coupler
.
addDumpFieldVector
(
"internal_force"
);
coupler
.
addDumpField
(
"gaps"
);
coupler
.
addDumpField
(
"areas"
);
coupler
.
addDumpField
(
"blocked_dofs"
);
coupler
.
addDumpField
(
"strain"
);
coupler
.
addDumpField
(
"stress"
);
auto
&
velocity
=
solid
.
getVelocity
();
for
(
UInt
s
:
arange
(
max_steps
))
{
coupler
.
solveStep
();
if
(
s
%
damping_interval
==
0
)
{
for
(
auto
&
v
:
make_view
(
velocity
))
v
*=
damping_ratio
;
}
if
(
s
%
100
==
0
)
{
coupler
.
dump
();
}
}
const
ElementType
element_type
=
_quad_4
;
const
Array
<
Real
>
&
stress_vect
=
model
.
getMaterial
(
"top_body"
).
getStress
(
element_type
);
auto
stress_it
=
stress_vect
.
begin
(
spatial_dimension
,
spatial_dimension
);
auto
stress_end
=
stress_vect
.
end
(
spatial_dimension
,
spatial_dimension
);
Real
stress_tolerance
=
1e-13
;
Matrix
<
Real
>
presc_stress
;
for
(;
stress_it
!=
stress_end
;
++
stress_it
)
{
const
auto
&
stress
=
*
stress_it
;
Matrix
<
Real
>
diff
(
spatial_dimension
,
spatial_dimension
);
diff
=
stress
;
diff
-=
presc_stress
;
Real
stress_error
=
diff
.
norm
<
L_inf
>
()
/
stress
.
norm
<
L_inf
>
();
if
(
stress_error
>
stress_tolerance
)
{
std
::
cerr
<<
"stress error: "
<<
stress_error
<<
" > "
<<
stress_tolerance
<<
std
::
endl
;
std
::
cerr
<<
"stress: "
<<
stress
<<
std
::
endl
<<
"prescribed stress: "
<<
presc_stress
<<
std
::
endl
;
return
EXIT_FAILURE
;
}
}
finalize
();
return
EXIT_SUCCESS
;
}
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