def constrain_pbar(self, dcid, pid, name, rtype, eltype, allow_C, allow_T):
"""Add constraints to all stress recovery points of a bar property.
Parameters
----------
dcid : int
Design constraint set identification number.
pid : int
Property id.
name : str or list
The name of the constraint.
rtype : str
The type of response. For bar elements it is usually `'STRESS'`.
eltype : str
The section type: `'RECT'`, `'CIRCLE'`, etc.
allow_C : float
The allowable for compression.
allow_T : float
The allowable for tension.
"""
if not isinstance(name, Iterable):
name = [name]
if rtype.upper() == 'STRESS':
label = 'minmaxS'
region = ''
lid_lb_ub = []
lid_lb_ub.append('ALL')
lid_lb_ub.append(allow_C)
lid_lb_ub.append(allow_T)
self.dcids.add(dcid)
for namei in name:
if 'Axial' in namei:
cons_names = ['End A-Point C',
'End A-Point D',
'End A-Point E',
'End A-Point F',
'End B-Point C',
'End B-Point D',
'End B-Point E',
'End B-Point F']
ptype = 'PBARL'
for i in range(len(cons_names)):
name = cons_names[i]
atta = get_output_code(rtype, eltype, name)
output_name = OUTC[rtype][eltype][atta]
stress_type = 'positive'
if output_name.find('Minor') > -1:
stress_type = 'negative'
elif output_name.find('Normal') > -1:
stress_type = 'both'
dresp1 = DRESP1(label, rtype, ptype, region, atta, pid)
dconstr = DCONSTR(dcid, dresp1.id, lid_lb_ub, stress_type)
self.dresps[dresp1.id] = dresp1
self.dconstrs[dconstr.id] = dconstr
def constrain_pcomp(self, dcid, pid, eltype, rtype, names, lallow=None,
uallow=None):
"""Add constraints to the bottom and top faces of a pcomp property.
Parameters
----------
dcid : int
Design constraint set identification number.
pid : int
Property id.
eltype : str
Element type ('CQUAD4', 'CTRIA3', etc).
rtype : str
The type of response. For shells it is usually `'STRESS'`.
names : str or list of strings
The name of the constraint, as in the quick reference guide,
reproduced in module :mod:`.atd.sol200.output_codes`.
lallow : float or None, optional
Lower bound on the response quantity.
uallow : float or None, optional
Upper bound on the response quantity.
"""
ptype = 'PCOMP'
region = ''
if lallow is None:
lallow = ''
if uallow is None:
uallow = ''
if not isinstance(names, (list, tuple)):
names = [names]
self.dcids.add(dcid)
for name in names:
atta = get_output_code(rtype, eltype, name)
dresp1 = DRESP1(name[:8], rtype, ptype, region, atta, pid)
dconstr = DCONSTR(dcid, dresp1.id, lallow, uallow)
self.dresps[dresp1.id] = dresp1
self.dconstrs[dconstr.id] = dconstr
def constrain_pbar(self, pid, name, rtype, eltype, allow_C, allow_T):
"""Add constraints to all stress recovery points of a bar property.
Parameters
----------
pid : int
Property id.
name : str or list
The name of the constraint, as described in :mod:`.output_codes`,
with only the prefix (`'Shear'`, `'Normal'`, etc).
rtype : str
The type of response. For bar elements it is usually `'STRESS'`.
eltype : str
The section type: `'RECT'`, `'CIRCLE'`, etc.
allow_C : float
The allowable for compression.
allow_T : float
The allowable for tension.
"""
if not isinstance(name, Iterable):
name = [name]
if rtype.upper() == 'STRESS':
label = 'minmaxS'
region = ''
lid_lb_ub = []
lid_lb_ub.append('ALL')
lid_lb_ub.append(allow_C)
lid_lb_ub.append(allow_T)
for namei in name:
if 'Normal X' in namei:
cons_names = ['Normal X Point 1 at end A',
'Normal X Point 2 at end A',
'Normal X Point 3 at end A',
'Normal X Point 4 at end A',
'Normal X Point 9 at end B',
'Normal X Point 10 at end B',
'Normal X Point 11 at end B',
'Normal X Point 12 at end B']
elif 'Shear' in namei:
cons_names = ['Shear XZ Point 5 at end A',
'Shear XY Point 6 at end A',
'Shear XZ Point 7 at end A',
'Shear XY Point 8 at end A',
'Shear XZ Point 13 at end B',
'Shear XY Point 14 at end B',
'Shear XZ Point 15 at end B',
'Shear XY Point 16 at end B']
ptype = 'PBARL'
for i in range(len(cons_names)):
name = cons_names[i]
atta = get_output_code(rtype, eltype, name)
output_name = OUTC[rtype][eltype][atta]
stress_type = 'positive'
if output_name.find('Minor') > -1:
stress_type = 'negative'
elif output_name.find('Normal') > -1:
stress_type = 'both'
else:
#TODO perhaps we need a shear allowable
if output_name.upper().find('SHEAR') > -1:
stress_type = 'positive'
lid_lb_ub[1] = lid_lb_ub[1] / 2.
lid_lb_ub[2] = lid_lb_ub[2] / 2.
dresp1 = DRESP1(label, rtype, ptype, region, atta, pid)
dcons = DCONS(dresp1.id, lid_lb_ub, stress_type)
self.dresps[dresp1.id] = dresp1
self.dcons[dresp1.id] = dcons
def constrain_pshell(self, pid, cname, rtype, allow_C, allow_T):
"""Add constraints to the bottom and top faces of a shell property.
Parameters
----------
pid : int
Property id.
cname : str or list
The name of the constraint, as described in :mod:`.output_codes`,
without the sufix `'Bottom'` or `'Top'`.
rtype : str
The type of response. For shells it is usually `'STRESS'`.
allow_C : float
The allowable for compression.
allow_T : float
The allowable for tension.
"""
if rtype.upper() == 'STRESS':
label = 'minmaxS'
ptype = 'PSHELL'
eltype = 'SOLID'
region = ''
lid_lb_ub = []
lid_lb_ub.append('ALL')
lid_lb_ub.append(allow_C)
lid_lb_ub.append(allow_T)
if not isinstance(cname, Iterable):
cname = [cname]
for name in cname:
name = name.strip()
# Bottom Face
namebot = name + ' Bottom'
atta = get_output_code(rtype, eltype, namebot)
output_name = OUTC[rtype][eltype][atta]
stress_type = 'positive'
if output_name.find('Minor') > -1:
stress_type = 'negative'
elif output_name.find('Normal') > -1:
stress_type = 'both'
else:
#TODO perhaps we need a shear allowable
if output_name.upper().find('SHEAR') > -1:
stress_type = 'positive'
lid_lb_ub[1] = lid_lb_ub[1] / 2.
lid_lb_ub[2] = lid_lb_ub[2] / 2.
dresp1 = DRESP1(label, rtype, ptype, region, atta, pid)
dcons = DCONS(dresp1.id, lid_lb_ub, stress_type)
self.dresps[dresp1.id] = dresp1
self.dcons[dresp1.id] = dcons
# Top Face
nametop = name + ' Top'
atta = get_output_code(rtype, eltype, nametop)
output_name = OUTC[rtype][eltype][atta]
stress_type = 'positive'
if output_name.find('Minor') > -1:
stress_type = 'negative'
elif output_name.find('Normal') > -1:
stress_type = 'both'
else:
#TODO perhaps we need a shear allowable
if output_name.upper().find('SHEAR') > -1:
stress_type = 'positive'
lid_lb_ub[1] = lid_lb_ub[1] / 2.
lid_lb_ub[2] = lid_lb_ub[2] / 2.
region = ''
dresp1 = DRESP1(label, rtype, ptype, region, atta, pid)
dcons = DCONS(dresp1.id, lid_lb_ub, stress_type)
self.dresps[dresp1.id] = dresp1
self.dcons[dresp1.id] = dcons
