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compression.py
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Created
Sat, Aug 17, 10:30
Size
1 KB
Mime Type
text/x-python
Expires
Mon, Aug 19, 10:30 (2 d)
Engine
blob
Format
Raw Data
Handle
19923664
Attached To
rAKA akantu
compression.py
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#!/usr/bin/env python3
import
akantu
as
aka
max_steps
=
20000
max_displacement
=
1e-2
damping_interval
=
10
damping_ratio
=
0.9
spatial_dimension
=
2
aka
.
parseInput
(
'compression.dat'
)
mesh
=
aka
.
Mesh
(
spatial_dimension
)
mesh
.
read
(
'compression.msh'
)
coupler
=
aka
.
CouplerSolidContact
(
mesh
)
solid
=
coupler
.
getSolidMechanicsModel
()
contact
=
coupler
.
getContactMechanicsModel
()
material_selector
=
aka
.
MeshDataMaterialSelectorString
(
"physical_names"
,
solid
)
solid
.
setMaterialSelector
(
material_selector
)
coupler
.
initFull
(
_analysis_method
=
aka
.
_explicit_lumped_mass
)
surface_selector
=
aka
.
PhysicalSurfaceSelector
(
mesh
)
detector
=
contact
.
getContactDetector
()
detector
.
setSurfaceSelector
(
surface_selector
)
solid
.
applyBC
(
aka
.
FixedValue
(
0.0
,
aka
.
_x
),
"sides"
)
time_step
=
solid
.
getStableTimeStep
()
time_step
*=
0.1
coupler
.
setTimeStep
(
time_step
)
coupler
.
setBaseName
(
"compression"
)
coupler
.
addDumpFieldVector
(
"displacement"
)
coupler
.
addDumpFieldVector
(
"contact_force"
)
coupler
.
addDumpFieldVector
(
"external_force"
)
coupler
.
addDumpFieldVector
(
"internal_force"
)
coupler
.
addDumpField
(
"gaps"
)
coupler
.
addDumpField
(
"areas"
)
coupler
.
addDumpField
(
"blocked_dofs"
)
coupler
.
addDumpField
(
"grad_u"
)
coupler
.
addDumpField
(
"stress"
)
coupler
.
dump
()
velocity
=
solid
.
getVelocity
()
increment
=
max_displacement
/
max_steps
for
s
in
range
(
0
,
max_steps
):
print
(
"Step : "
,
s
)
solid
.
applyBC
(
aka
.
IncrementValue
(
-
increment
,
aka
.
_y
),
"loading"
)
solid
.
applyBC
(
aka
.
IncrementValue
(
increment
,
aka
.
_y
),
"fixed"
)
coupler
.
solveStep
()
if
s
%
damping_interval
==
0
:
velocity
*=
damping_ratio
if
s
%
100
==
0
:
coupler
.
dump
()
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