def _get_fe_domain_structure(self):
'''Root of the domain hierarchy
'''
elem_length = self.length / float(self.shape)
fe_domain = FEDomain()
fe_m_level = FERefinementGrid(name='matrix domain',
domain=fe_domain,
fets_eval=self.fets_m)
fe_grid_m = FEGrid(name='matrix grid',
coord_max=(self.length, ),
shape=(self.shape, ),
level=fe_m_level,
fets_eval=self.fets_m,
geo_transform=self.geo_transform)
fe_fb_level = FERefinementGrid(name='fiber bond domain',
domain=fe_domain,
fets_eval=self.fets_fb)
fe_grid_fb = FEGrid(coord_min=(0., length / 5.),
coord_max=(length, 0.),
shape=(self.shape, 1),
level=fe_fb_level,
fets_eval=self.fets_fb,
geo_transform=self.geo_transform)
return fe_domain, fe_grid_m, fe_grid_fb, fe_m_level, fe_fb_level
def setUp(self):
'''
Construct the FEDomain with one FERefinementGrids (2,2)
'''
self.domain1 = FEDomain()
self.fets_eval = FETS2D4Q(mats_eval=MATS2DElastic())
self.d1 = FERefinementGrid(name='d1', domain=self.domain1)
self.g1 = FEGrid(coord_max=(1., 1., 0.),
shape=(2, 2),
fets_eval=self.fets_eval,
level=self.d1)
def example_2d():
from ibvpy.mats.mats2D.mats2D_elastic.mats2D_elastic import MATS2DElastic
from ibvpy.fets.fets2D.fets2D4q import FETS2D4Q
fets_eval = FETS2D4Q(mats_eval=MATS2DElastic(E=2.1e5))
# Discretization
fe_domain1 = FEGrid(coord_max=(2., 5., 0.),
shape=(10, 10),
fets_eval=fets_eval)
fe_subgrid1 = FERefinementLevel(parent=fe_domain1,
fine_cell_shape=(1, 1))
print 'children'
print fe_domain1.children
fe_subgrid1.refine_elem((5, 5))
fe_subgrid1.refine_elem((6, 5))
fe_subgrid1.refine_elem((7, 5))
fe_subgrid1.refine_elem((8, 5))
fe_subgrid1.refine_elem((9, 5))
fe_domain = FEDomain(subdomains=[fe_domain1])
ts = TS(dof_resultants=True,
sdomain=fe_domain,
bcond_list=[BCDofGroup(var='f', value=0.1, dims=[0],
get_dof_method=fe_domain1.get_top_dofs),
BCDofGroup(var='u', value=0., dims=[0, 1],
get_dof_method=fe_domain1.get_bottom_dofs),
],
rtrace_list=[RTraceGraph(name='Fi,right over u_right (iteration)',
var_y='F_int', idx_y=0,
var_x='U_k', idx_x=1),
RTraceDomainListField(name='Stress',
var='sig_app', idx=0, warp=True),
# RTraceDomainField(name = 'Displacement' ,
# var = 'u', idx = 0),
# RTraceDomainField(name = 'N0' ,
# var = 'N_mtx', idx = 0,
# record_on = 'update')
]
)
# Add the time-loop control
tloop = TLoop(tstepper=ts,
tline=TLine(min=0.0, step=1, max=1.0))
#
print tloop.eval()
from ibvpy.plugins.ibvpy_app import IBVPyApp
ibvpy_app = IBVPyApp(ibv_resource=tloop)
ibvpy_app.main()
def _set_sdomain(self, value):
if isinstance(value, FEGrid):
# construct FERefinementGrid and FEDomain
self._sdomain = FEDomain()
fe_rgrid = FERefinementGrid(domain=self._sdomain,
fets_eval=value.fets_eval)
value.level = fe_rgrid
elif isinstance(value, FERefinementGrid):
# construct FEDomain
self._sdomain = FEDomain()
value.domain = self._sdomain
elif isinstance(value, list):
self._sdomain = FEDomain()
for d in value:
if isinstance(d, FEGrid):
fe_rgrid = FERefinementGrid(domain=self._sdomain,
fets_eval=d.fets_eval)
d.level = fe_rgrid
elif isinstance(d, FESubDomain):
d.domain = self._sdomain
else:
raise TypeError, 'The list can contain only FEGrid or FERefinementGrid'
else:
self._sdomain = value
def combined_fe2D4q_with_fe2D4q8u():
fets_eval_4u_conc = FETS2D4Q(mats_eval=MATS2DElastic(E=28500, nu=0.2))
fets_eval_4u_steel = FETS2D4Q(mats_eval=MATS2DElastic(E=210000, nu=0.25))
fets_eval_8u = FETS2D4Q8U(mats_eval=MATS2DElastic())
# Discretization
fe_domain = FEDomain()
fe_grid_level1 = FERefinementGrid(name='master grid',
fets_eval=fets_eval_4u_conc,
domain=fe_domain)
fe_grid = FEGrid(level=fe_grid_level1,
coord_max=(2., 6., 0.),
shape=(11, 30),
fets_eval=fets_eval_4u_conc)
fe_grid_level2 = FERefinementGrid(name='refinement grid',
parent=fe_grid_level1,
fets_eval=fets_eval_4u_steel,
fine_cell_shape=(1, 1))
# fe_grid_level1[ 5, :5 ].refine_using( fe_grid_level2 )
# 1. first get the slice for the level - distinguish it from the slice at the subgrid
# this includes slicing in the subgrids. what if the subgrid does not exist?
#
# Each subgrid must hold its own slice within the level. The index operator fills
# the grid [...] instanciates the whole grid and returns the instance of
# FEGridLevelSlice. The expanded subgrid contains its constructor slice.
#
# 2. If the slice is within an existing slice no change in the FESubgrid is required
# only the instance of the slice is returned. The FEGridLevelSlice goes always into
# an expanded part of FEGrid.
#
# 3. If the slice does not fit into any existing slice - all domain with an intersection
# of the existing slice must be constructed as well.
#
# 2. deactivate elements
# 3.
# BUT how to impose the boundary conditions on the particular refinement? The
# slice has an attribute
fe_grid_level2.refine_elem((5, 0))
fe_grid_level2.refine_elem((5, 1))
fe_grid_level2.refine_elem((5, 2))
fe_grid_level2.refine_elem((5, 3))
fe_grid_level2.refine_elem((5, 4))
fe_grid_level2.refine_elem((5, 5))
# apply the boundary condition on a subgrid
#
print fe_grid_level2.fe_subgrids
fe_first_grid = fe_grid_level2.fe_subgrids[0]
ts = TS(
dof_resultants=True,
sdomain=fe_domain,
bcond_list=[
BCSlice(var='f', value=1., dims=[0], slice=fe_grid[:, -1, :, -1]),
BCSlice(var='u',
value=0.,
dims=[0, 1],
slice=fe_first_grid[:, 0, :, 0])
],
rtrace_list=[
RTraceGraph(name='Fi,right over u_right (iteration)',
var_y='F_int',
idx_y=0,
var_x='U_k',
idx_x=1),
RTraceDomainListField(name='Stress',
var='sig_app',
idx=0,
warp=True),
# RTraceDomainField(name = 'Displacement' ,
# var = 'u', idx = 0),
# RTraceDomainField(name = 'N0' ,
# var = 'N_mtx', idx = 0,
# record_on = 'update')
])
# Add the time-loop control
tloop = TLoop(tstepper=ts, tline=TLine(min=0.0, step=1, max=1.0))
print tloop.eval()
from ibvpy.plugins.ibvpy_app import IBVPyApp
ibvpy_app = IBVPyApp(ibv_resource=tloop)
ibvpy_app.main()
def _get_fe_domain(self):
return FEDomain()
TLine
from ibvpy.mats.mats1D.mats1D_elastic.mats1D_elastic import MATS1DElastic
fets_eval = FETS1D2L(mats_eval=MATS1DElastic(E=10., A=1.))
# Discretization
fe_domain1 = FEGrid(coord_max=(10., 0., 0.),
shape=(10,),
fets_eval=fets_eval)
fe_domain2 = FEGrid(coord_min=(10., 0., 0.),
coord_max=(20., 0., 0.),
shape=(10,),
fets_eval=fets_eval)
fe_domain = FEDomain(subdomains=[fe_domain1, fe_domain2])
ts = TS(dof_resultants=True,
sdomain=fe_domain,
bcond_list=[BCDof(var='u', dof=0, value=0.),
BCDof(
var='u', dof=5, link_dofs=[16], link_coeffs=[1.], value=0.),
BCDof(var='f', dof=21, value=10)],
rtrace_list=[RTraceGraph(name='Fi,right over u_right (iteration)',
var_y='F_int', idx_y=0,
var_x='U_k', idx_x=1),
]
)
# Add the time-loop control
tloop = TLoop(tstepper=ts, tline=TLine(min=0.0, step=1, max=1.0))
BCSlice, TStepper as TS, TLoop, TLine, RTDofGraph
from ibvpy.rtrace.rt_domain_list_field import RTraceDomainListField
from ibvpy.mesh.fe_grid import FEGrid
from ibvpy.mesh.fe_refinement_grid import FERefinementGrid
from ibvpy.mesh.fe_domain import FEDomain
from ibvpy.mesh.fe_spring_array import FESpringArray
from ibvpy.fets.fets1D.fets1D2l import FETS1D2L
from ibvpy.mats.mats1D import MATS1DElastic
if __name__ == '__main__':
fets_eval = FETS1D2L( mats_eval = MATS1DElastic( E = 1 ) )
# Discretization
fe_domain = FEDomain()
fe_patch_left = FERefinementGrid( name = 'left',
fets_eval = fets_eval,
domain = fe_domain )
fe_grid_left = FEGrid( level = fe_patch_left,
coord_min = ( 0., ),
coord_max = ( 1., ),
shape = ( 1, ),
fets_eval = fets_eval )
fe_patch_right = FERefinementGrid( name = 'refinement grid',
fets_eval = fets_eval,
domain = fe_domain )