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plate.py
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Created
Fri, Aug 16, 20:29
Size
2 KB
Mime Type
text/x-python
Expires
Sun, Aug 18, 20:29 (2 d)
Engine
blob
Format
Raw Data
Handle
19860117
Attached To
rAKA akantu
plate.py
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#!/usr/bin/env python3
try
:
from
mpi4py
import
MPI
comm
=
MPI
.
COMM_WORLD
prank
=
comm
.
Get_rank
()
except
ImportError
:
prank
=
0
import
akantu
as
aka
import
numpy
as
np
# -----------------------------------------------------------------------------
def
solve
(
material_file
,
mesh_file
,
traction
):
aka
.
parseInput
(
material_file
)
spatial_dimension
=
2
# -------------------------------------------------------------------------
# Initialization
# -------------------------------------------------------------------------
mesh
=
aka
.
Mesh
(
spatial_dimension
)
if
prank
==
0
:
mesh
.
read
(
mesh_file
)
mesh
.
distribute
()
model
=
aka
.
SolidMechanicsModel
(
mesh
)
model
.
initFull
(
_analysis_method
=
aka
.
_static
)
model
.
setBaseName
(
"plate"
)
model
.
addDumpFieldVector
(
"displacement"
)
model
.
addDumpFieldVector
(
"external_force"
)
model
.
addDumpField
(
"strain"
)
model
.
addDumpField
(
"stress"
)
model
.
addDumpField
(
"blocked_dofs"
)
# -------------------------------------------------------------------------
# Boundary conditions
# -------------------------------------------------------------------------
model
.
applyBC
(
aka
.
FixedValue
(
0.0
,
aka
.
_x
),
"XBlocked"
)
model
.
applyBC
(
aka
.
FixedValue
(
0.0
,
aka
.
_y
),
"YBlocked"
)
model
.
getExternalForce
()[:]
=
0
trac
=
np
.
zeros
(
spatial_dimension
)
trac
[
1
]
=
traction
model
.
applyBC
(
aka
.
FromTraction
(
trac
),
"Traction"
)
solver
=
model
.
getNonLinearSolver
()
solver
.
set
(
"max_iterations"
,
2
)
solver
.
set
(
"threshold"
,
1e-10
)
solver
.
set
(
"convergence_type"
,
aka
.
SolveConvergenceCriteria
.
residual
)
print
(
"Solve for traction "
,
traction
)
model
.
solveStep
()
model
.
dump
()
# -----------------------------------------------------------------------------
# main
# -----------------------------------------------------------------------------
def
main
():
mesh_file
=
'plate.msh'
material_file
=
'material.dat'
traction
=
1.
solve
(
material_file
,
mesh_file
,
traction
)
# -----------------------------------------------------------------------------
if
__name__
==
"__main__"
:
main
()
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