def _write_nodes_symmetric(self, outfile, size=8, is_double=False, plane='xz'):
"""
Writes the NODE-type cards
Parameters
----------
self : BDF()
the BDF object
.. warning :: doesn't consider coordinate systems;
it could, but you'd need 20 new coordinate systems
.. warning :: doesn't mirror SPOINTs, EPOINTs
"""
if self.spoints:
msg = []
msg.append('$SPOINTS\n')
msg.append(self.spoints.write_card(size, is_double))
outfile.write(''.join(msg))
if self.epoints:
msg = []
msg.append('$EPOINTS\n')
msg.append(self.epoints.write_card(size, is_double))
outfile.write(''.join(msg))
plane = plane.strip().lower()
if plane == 'xz':
iy = 4
elif plane == 'xy':
iy = 5
elif plane == 'yz':
iy = 3
else:
raise NotImplementedError(plane)
if self.nodes:
msg = []
msg.append('$NODES\n')
if self.gridSet:
msg.append(self.gridSet.print_card(size))
nid_offset = max(self.nodes.keys())
if self.is_long_ids:
print_card_long = print_card_double if is_double else print_card_16
for (unused_nid, node) in sorted(iteritems(self.nodes)):
repr_fields = node.repr_fields()
msg.append(print_card_long(repr_fields))
repr_fields = node.repr_fields()
# grid, nid, cp, x, y, z
repr_fields[1] += nid_offset
repr_fields[iy] *= -1.0
msg.append(print_card_long(repr_fields))
else:
for (unused_nid, node) in sorted(iteritems(self.nodes)):
repr_fields = node.repr_fields()
msg.append(print_card_8(repr_fields))
repr_fields = node.repr_fields()
# grid, nid, cp, x, y, z
repr_fields[1] += nid_offset
repr_fields[iy] *= -1.0
msg.append(print_card_8(repr_fields))
outfile.write(''.join(msg))
def write_card(self, size=8, is_double=False):
msg = '\n$' + '-' * 80
msg += '\n$ %s Matrix %s\n' % ('DMI', self.name)
list_fields = ['DMI', self.name, 0, self.form, self.tin,
self.tout, None, self.nRows, self.nCols]
if size == 8:
msg += print_card_8(list_fields)
#elif is_double:
#msg += print_card_double(list_fields)
else:
msg += print_card_16(list_fields)
#msg += self.print_card(list_fields,size=16,isD=False)
if self.is_complex():
for (gci, gcj, reali, imagi) in zip(self.GCi, self.GCj, self.Real, self.Complex):
list_fields = ['DMI', self.name, gcj, gci, reali, imagi]
if size == 8:
msg += print_card_8(list_fields)
elif is_double:
msg += print_card_double(list_fields)
else:
msg += print_card_16(list_fields)
else:
for (gci, gcj, reali) in zip(self.GCi, self.GCj, self.Real):
list_fields = ['DMI', self.name, gcj, gci, reali]
if size == 8:
msg += print_card_8(list_fields)
elif is_double:
msg += print_card_double(list_fields)
else:
msg += print_card_16(list_fields)
return msg
def assert_fields(card1, card2):
try:
fields1 = wipe_empty_fields(card1.repr_fields())
fields2 = wipe_empty_fields(card2.repr_fields())
except:
print("card1 = \n%s" % (card1))
print("card2 = \n%s" % (card2))
raise
if len(fields1) != len(fields2):
msg = ('len(fields1)=%s len(fields2)=%s\n%r\n%r\n%s\n%s'
% (len(fields1), len(fields2), fields1, fields2,
print_card_8(fields1), print_card_8(fields2)))
raise RuntimeError(msg)
for (i, field1, field2) in zip(count(), fields1, fields2):
value1a = print_field(field1)
value2a = print_field(field2)
if value1a != value2a:
value1 = print_field(interpret_value(value1a))
value2 = print_field(interpret_value(value2a))
if value1 != value2:
msg = 'value1 != value2\n'
msg += ('cardName=%s ID=%s i=%s field1=%r field2=%r value1=%r '
'value2=%r\n%r\n%r' % (fields1[0], fields1[1], i,
field1, field2, value1, value2,
fields1, fields2))
raise RuntimeError(msg)
def cart3d_to_nastran_filename(cart3d_filename, bdf_filename, log=None, debug=False):
"""
Converts a Cart3D file to Nastran format.
Parameters
----------
cart3d_filename : str
path to the input Cart3D file
bdf_filename : str
path to the output BDF file
log : log / None
log : a logger object
None : a log will be defined
debug : bool
True/False (used if log is not defined)
"""
cart3d = Cart3D(log=log, debug=debug)
cart3d.read_cart3d(cart3d_filename)
nodes = cart3d.nodes
elements = cart3d.elements
regions = cart3d.regions
#bdf = BDF()
#bdf.nodes = cart3d.nodes
#bdf.elements = cart3d.elements
#bdf.write_bdf(bdf_filename)
#return
f = open(bdf_filename, 'wb')
f.write('CEND\n')
f.write('BEGIN BULK\n')
f.write('$Nodes\n')
i = 0
nid = 1
cid = 0
for node in nodes:
card = print_card_16(['GRID', nid, cid] + list(node))
f.write(card)
nid += 1
eid = 1
f.write('$Elements\n')
for (n1, n2, n3), pid in zip(elements, regions):
card = print_card_8(['CTRIA3', eid, pid, n1, n2, n3])
f.write(card)
eid += 1
t = 0.1
E = 1e7
nu = 0.3
f.write('$Properties\n')
for pid in unique(regions):
mid = pid
card = print_card_8(['PSHELL', pid, mid, t])
f.write(card)
card = print_card_8(['MAT1', mid, E, None, nu])
f.write(card)
f.write('ENDDATA\n')
f.close()
def stl_to_nastran_filename(stl_filename, bdf_filename,
nnodes_offset=0, nelements_offset=0,
pid=100, mid=200,
size=8, is_double=False,
log=None):
model = STLReader(log=log)
model.read_stl(stl_filename)
nid = nnodes_offset + 1
cid = None
load_id = 10
nodal_normals = model.get_normals_at_nodes(model.elements)
bdf = open(bdf_filename, 'wb')
bdf.write('CEND\n')
#bdf.write('LOAD = %s\n' % load_id)
bdf.write('BEGIN BULK\n')
nid2 = 1
magnitude = 100.
if size == 8:
print_card = print_card_8
elif size == 16:
if is_double:
print_card = print_card_16
else:
print_card = print_card_double
for x, y, z in model.nodes:
card = ['GRID', nid, cid, x, y, z]
bdf.write(print_card_16(card))
#nx, ny, nz = nodal_normals[nid2 - 1]
#card = ['FORCE', load_id, nid, cid, magnitude, nx, ny, nz]
#bdf.write(print_card_8(card))
nid += 1
nid2 += 1
eid = nelements_offset + 1
for (n1, n2, n3) in (model.elements + (nnodes_offset + 1)):
card = ['CTRIA3', eid, pid, n1, n2, n3]
bdf.write(print_card_8(card))
eid += 1
t = 0.1
card = ['PSHELL', pid, mid, t]
bdf.write(print_card_8(card))
E = 1e7
G = None
nu = 0.3
card = ['MAT1', mid, E, G, nu]
bdf.write(print_card_8(card))
bdf.write('ENDDATA\n')
bdf.close()
def write_card(self, size=8, is_double=False):
"""
.. todo:: support double precision
"""
msg = '\n$' + '-' * 80
msg += '\n$ %s Matrix %s\n' % (self.type, self.name)
list_fields = [self.type, self.name, 0, self.ifo, self.tin,
self.tout, self.polar, None, self.ncols]
if size == 8:
msg += print_card_8(list_fields)
else:
msg += print_card_16(list_fields)
if self.is_complex():
if self.is_polar():
for (GCi, GCj, reali, complexi) in zip(self.GCi, self.GCj, self.Real, self.Complex):
magi = sqrt(reali**2 + complexi**2)
if reali == 0.0:
phasei = 0.0
else:
phasei = degrees(atan2(complexi, reali))
list_fields = [self.type, self.name, GCj[0], GCj[1],
None, GCi[0], GCi[1], magi, phasei]
if size == 8:
msg += print_card_8(list_fields)
elif is_double:
msg += print_card_double(list_fields)
else:
msg += print_card_16(list_fields)
else:
for (GCi, GCj, reali, complexi) in zip(self.GCi, self.GCj, self.Real, self.Complex):
list_fields = [self.type, self.name, GCj[0], GCj[1],
None, GCi[0], GCi[1], reali, complexi]
if size == 8:
msg += print_card_8(list_fields)
elif is_double:
msg += print_card_double(list_fields)
else:
msg += print_card_16(list_fields)
else:
for (GCi, GCj, reali) in zip(self.GCi, self.GCj, self.Real):
list_fields = [self.type, self.name, GCj[0], GCj[1],
None, GCi[0], GCi[1], reali, None]
if size == 8:
msg += print_card_8(list_fields)
elif is_double:
msg += print_card_double(list_fields)
else:
msg += print_card_16(list_fields)
return msg
def __repr__(self):
thru_fields = collapse_thru(self.ids)
#list_fields = ['SESET', self.seid]
cards = []
while 'THRU' in thru_fields:
ithru = thru_fields.index('THRU')
card = print_card_8(['SESET', self.seid] +
thru_fields[ithru - 1:ithru + 2])
cards.append(card)
thru_fields = thru_fields[0:ithru - 1]+thru_fields[ithru + 2:]
if thru_fields:
card = print_card_8(['SESET', self.seid] + thru_fields)
cards.append(card)
return ''.join(cards)
def convert_ugrid2d_to_nastran(bdf_filename, nodes, tris, quads,
cp=2000, pid=2000, mid=2000,
axis_order=None,
nid_start=1, eid_start=1, punch=True):
if axis_order is not None:
nodes = deepcopy(nodes[:, axis_order])
with open(bdf_filename, 'wb') as bdf_file:
if not punch:
bdf_file.write('CEND\n')
bdf_file.write('BEGIN BULK\n')
cp = None
#card = ['CORD2R', cp, 0] + [0., 0., 0.] + [0., 0., 1.] + [1., 0., 0.]
#f.write(print_card_8(card))
nid = nid_start
for xi, yi, zi in nodes:
# yes I'm aware...x is the axial distance
# y/z are the x/y plane
card = ['GRID', nid, cp, xi, yi, zi]
bdf_file.write(print_card_8(card))
nid += 1
t = 0.1
card = ['PSHELL', pid, mid, t]
bdf_file.write(print_card_8(card))
E = 3.0E7
G = None
nu = 0.3
card = ['MAT1', mid, E, G, nu]
bdf_file.write(print_card_8(card))
eid = eid_start
for n1, n2, n3 in tris + nid_start:
card = ['CTRIA3', eid, pid, n1, n2, n3]
bdf_file.write(print_int_card(card))
eid += 1
for n1, n2, n3, n5 in quads + nid_start:
card = ['CQUAD4', eid, pid, n1, n2, n3, n5]
bdf_file.write(print_int_card(card))
eid += 1
if not punch:
bdf_file.write('ENDDATA\n')
def write_card(self, bdf_file, size=8):
card = ['SPCADD', self.spc_id] + self.spc_ids
#print("card = ", card)
if size == 8:
bdf_file.write(print_card_8(card))
else:
bdf_file.write(print_card_16(card))
def write_card(self, bdf_file, size=8, element_ids=None):
if self.n:
if element_ids is None:
i = arange(self.n)
else:
i = searchsorted(self.element_id, self.element_id)
for (eid, pid, n, is_g0, g0, x, is_offt, offt, bit, pin, wa, wb, sa, sb) in zip(
self.element_id[i], self.property_id[i], self.node_ids[i],
self.is_g0[i], self.g0[i], self.x[i],
self.is_offt[i], self.offt[i], self.bit[i],
self.pin_flags[i], self.wa[i], self.wb[i], self.sa[i], self.sb[i]):
x1 = g0 if is_g0 else x[0]
x2 = 0 if is_g0 else x[1]
x3 = 0 if is_g0 else x[2]
offt_bit = offt if is_offt else bit
#print('is_offt=%s offt=%s bit=%s offt_bit=%s' % (is_offt, offt, bit, offt_bit))
pa = set_blank_if_default(pin[0], 0)
pb = set_blank_if_default(pin[1], 0)
w1a = set_blank_if_default(wa[0], 0.0)
w2a = set_blank_if_default(wa[1], 0.0)
w3a = set_blank_if_default(wa[2], 0.0)
w1b = set_blank_if_default(wb[0], 0.0)
w2b = set_blank_if_default(wb[1], 0.0)
w3b = set_blank_if_default(wb[2], 0.0)
sa = set_blank_if_default(sa, 0)
sb = set_blank_if_default(sb, 0)
card = ['CBEAM', eid, pid, n[0], n[1], x1, x2, x3, offt_bit,
pa, pb, w1a, w2a, w3a, w1b, w2b, w3b,
sa, sb]
bdf_file.write(print_card_8(card))
def test_mat11_01(self):
lines = [
'MAT11 1 1.+75000000. 700000. .1 .13 .267000000.+',
'+ 9000000.3000000. .1 1.-5 7.-6 8.-6 50.',
]
lines_expected = [
'MAT11 1 1.+75000000. 700000. .1 .13 .267000000.',
' 9000000.3000000. .1 .00001 .000007 .000008 50.'
]
card = bdf.process_card(lines)
card = BDFCard(card)
card2 = MAT11(card)
fields = card2.raw_fields()
msg = print_card_8(fields)
#f = StringIO.StringIO()
size = 8
msg = card2.write_card(size, 'dummy')
#msg = f.getvalue()
#print(msg)
lines_actual = msg.rstrip().split('\n')
msg = '\n%s\n\n%s' % ('\n'.join(lines_expected), msg)
msg += 'nlines_actual=%i nlines_expected=%i' % (len(lines_actual), len(lines_expected))
#print(msg)
self.assertEqual(len(lines_actual), len(lines_expected), msg)
for actual, expected in zip(lines_actual, lines_expected):
msg = '\nactual = %r\n' % actual
msg += 'expected = %r' % expected
self.assertEqual(actual, expected, msg)
def test_rbe1_02(self):
lines = [
'RBE1 1001 1000 123456',
' UM 1002 123 1003 123 1004 123',
' 1005 123 1006 123 1008 123',
' 1009 123 1010 123 1011 123',
' 1012 123',
]
card = bdf.process_card(lines)
#print(print_card_8(card))
card = BDFCard(card)
rbe = RBE1.add_card(card)
fields = rbe.raw_fields()
msg = print_card_8(fields).rstrip()
lines_expected = [
'RBE1 1001 1000 123456',
' UM 1002 123 1003 123 1004 123',
' 1005 123 1006 123 1008 123',
' 1009 123 1010 123 1011 123',
' 1012 123',
]
lines_actual = msg.rstrip().split('\n')
msg = '\n%s\n\n%s\n' % ('\n'.join(lines_expected), msg)
msg += 'nlines_actual=%i nlines_expected=%i' % (len(lines_actual), len(lines_expected))
self.assertEqual(len(lines_actual), len(lines_expected), msg)
for actual, expected in zip(lines_actual, lines_expected):
self.assertEqual(actual, expected, msg)
def write_card(self, bdf_file, size=8):
card = ['NLPCI', self.nlpci_id, self.Type, self.minalr,
self.maxalr, self.scale, None, self.desiter, self.mxinc]
if size == 8:
bdf_file.write(print_card_8(card))
else:
bdf_file.write(print_card_16(card))
def write_card(self, size=8, is_double=False):
card = self.raw_fields()
if size == 8:
return self.comment + print_card_8(card)
if is_double:
return self.comment + print_card_double(card)
return self.comment + print_card_16(card)
def write_card(self, f, size, is_double, coord_id=None):
assert size in [8, 16], size
assert is_double in [True, False], is_double
if self.n:
#if coord_id is None:
#i = arange(self.n)
#else:
#assert len(unique(coord_id))==len(coord_id), unique(coord_id)
#i = searchsorted(self.coord_id, coord_id)
if size == 8:
print_cardi = print_card_8
elif is_double:
print_cardi = print_card_double
else:
print_cardi = print_card_16
for cid, coord in iteritems(self.coords):
if cid > 0:
if coord.type in ['CORD1R', 'CORD1C', 'CORD1S']:
card = [coord.type, cid, coord.g1, coord.g2, coord.g3]
else:
card = [coord.type, cid, coord.rid] + list(coord.e1) + list(coord.e2) + list(coord.e3)
f.write(print_card_8(card))
def write_card(self, size=8, is_double=False):
card = wipe_empty_fields(self.repr_fields())
if size == 8 or len(card) == 8: # to last node
msg = self.comment + print_card_8(card)
else:
msg = self.comment + print_card_16(card)
return msg
def write_card(self, f, size=8, is_double=False):
#.. todo:: collapse the IDs
if self.n:
spoint = list(self.spoint)
spoint.sort()
card = ['SPOINT'] + collapse_thru(spoint)
f.write(print_card_8(card))
def write_card(self, f, size=8, is_double=True, element_id=None):
assert size in [8, 16], size
assert is_double in [True, False], is_double
if self.n:
if element_id is None:
i = arange(self.n)
else:
#assert len(unique(element_id))==len(element_id), unique(element_id)
i = searchsorted(self.element_id, element_id)
Cid = [cid if cid != 0 else '' for cid in self.coord_id[i]]
Nspan = [nspan if nspan != 0 else '' for nspan in self.nspan[i]]
Nchord = [nchord if nchord != 0 else '' for nchord in self.nchord[i]]
Igid = self.igid[i]
Lspan = [lspan if lspan != 0. else '' for lspan in self.lspan[i]]
Lchord = [lchord if lchord != 0. else '' for lchord in self.lchord[i]]
for (eid, pid, cid, nspan, nchord, lspan, lchord, igid,
p1, x12, p4, x43) in zip(self.element_id[i], self.property_id[i],
Cid, Nspan, Nchord, Lspan, Lchord, Igid,
self.p1[i, :], self.x12[i], self.p4[i, :], self.x43[i]):
card = ['CAERO1', eid, pid, cid, nspan, nchord, lspan, lchord, igid,
p1[0], p1[1], p1[2], x12,
p4[0], p4[1], p4[2], x43,]
if size == 8:
f.write(print_card_8(card))
else:
f.write(print_card_16(card))
def test_rbe1_03(self):
lines = [
'rbe1,46,3,123456, , , , , ,+rbe46',
'+rbe46,UM,4,123456,5,123456,2.0-6'
]
card = bdf.process_card(lines)
#print(print_card_8(card))
card = BDFCard(card)
#print(card)
card2 = RBE1(card)
fields = card2.raw_fields()
msg = print_card_8(fields).rstrip()
#print(msg)
lines_expected = [
'RBE1 46 3 123456',
' UM 4 123456 5 123456 .000002'
]
lines_actual = msg.rstrip().split('\n')
msg = '\n%s\n\n%s\n' % ('\n'.join(lines_expected), msg)
msg += 'nlines_actual=%i nlines_expected=%i' % (len(lines_actual), len(lines_expected))
self.assertEqual(len(lines_actual), len(lines_expected), msg)
for actual, expected in zip(lines_actual, lines_expected):
self.assertEqual(actual, expected, msg)
def print_card(fields, size=8, is_double=False):
"""
Prints a card in 8-character of 16-character Nastran format.
Parameters
----------
fields : List[int/float/str/None]
all the fields in the BDF card (no trailing Nones)
size : int; default=8
the size of the field (8/16)
is_double : bool; default=False
is the card double precision?
Double precision applies to specific cards and turns
1.234E+5 into 1.234D+5. Applies to GRID, CORDx only?
Returns
-------
card : str
string representation of the card
.. note:: be careful of using is_double on cards that aren't
GRID or CORDx
"""
if size == 8:
return print_card_8(fields)
elif is_double:
return print_card_double(fields)
return print_card_16(fields)
def write_card(self, bdf_file, size=8, property_id=None):
if self.n:
if property_id is None:
i = arange(self.n)
else:
i = searchsorted(self.property_id, property_id)
for (pid, mid, area, I1, I2, J, nsm, c1, c2, d1, d2, e1, e2, f1, f2, k1, k2,
i12) in zip(self.property_id[i], self.material_id[i],
self.area[i], self.I1[i], self.I2[i], self.J[i], self.nsm[i],
self.C1[i], self.C2[i], self.D1[i], self.D2[i],
self.E1[i], self.E2[i], self.F1[i], self.F2[i],
self.K1[i], self.K2[i], self.i12[i]):
if pid in self._comments:
bdf_file.write(self._comments[pid])
#card = ['PBAR', pid, mid, area, I1, I2, J]
#c1 = set_blank_if_default(self.c1, 0.0)
#c2 = set_blank_if_default(self.c2, 0.0)
#d1 = set_blank_if_default(self.d1, 0.0)
#d2 = set_blank_if_default(self.d2, 0.0)
#e1 = set_blank_if_default(self.e1, 0.0)
#e2 = set_blank_if_default(self.e2, 0.0)
#f1 = set_blank_if_default(self.f1, 0.0)
#f2 = set_blank_if_default(self.f2, 0.0)
#k1 = set_blank_if_default(self.k1, 1e8)
#k2 = set_blank_if_default(self.k2, 1e8)
list_fields = ['PBAR', pid, mid, area, I1, I2, J, nsm,
None, c1, c2, d1, d2, e1, e2, f1, f2, k1, k2, i12]
bdf_file.write(print_card_8(list_fields))
def test_rbe1_01(self):
lines = [
'RBE1 10201 10201 123 10202 456',
' UM 10201 456 10202 123',
]
card = bdf.process_card(lines)
#print(print_card_8(card))
card = BDFCard(card)
#print(card)
card2 = RBE1(card)
fields = card2.raw_fields()
msg = print_card_8(fields).rstrip()
#print(msg)
lines_expected = [
'RBE1 10201 10201 123 10202 456',
' UM 10201 456 10202 123'
]
lines_actual = msg.rstrip().split('\n')
msg = '\n%s\n\n%s\n' % ('\n'.join(lines_expected), msg)
msg += 'nlines_actual=%i nlines_expected=%i' % (len(lines_actual), len(lines_expected))
self.assertEqual(len(lines_actual), len(lines_expected), msg)
for actual, expected in zip(lines_actual, lines_expected):
self.assertEqual(actual, expected, msg)
def write_card(self, f, size=8):
card = ['SPCADD', self.spc_id] + self.spc_ids
#print "card = ", card
if size == 8:
f.write(print_card_8(card))
else:
f.write(print_card_16(card))
def write_card(self, f, size=8, element_ids=None):
if self.n:
if element_ids is None:
i = arange(self.n)
else:
i = searchsorted(self.element_id, self.element_id)
for (eid, pid, n, is_g0, g0, x, offt, pin, wa, wb) in zip(
self.element_id[i], self.property_id[i], self.node_ids[i],
self.is_g0[i], self.g0[i], self.x[i],
self.offt[i],
self.pin_flags[i], self.wa[i], self.wb[i]):
pa = set_blank_if_default(pin[0], 0)
pb = set_blank_if_default(pin[1], 0)
w1a = set_blank_if_default(wa[0], 0.0)
w2a = set_blank_if_default(wa[1], 0.0)
w3a = set_blank_if_default(wa[2], 0.0)
w1b = set_blank_if_default(wb[0], 0.0)
w2b = set_blank_if_default(wb[1], 0.0)
w3b = set_blank_if_default(wb[2], 0.0)
x1 = g0 if is_g0 else x[0]
x2 = 0 if is_g0 else x[1]
x3 = 0 if is_g0 else x[2]
offt = set_string8_blank_if_default(offt, 'GGG')
card = ['CBAR', eid, pid, n[0], n[1], x1, x2, x3, offt,
pa, pb, w1a, w2a, w3a, w1b, w2b, w3b]
if size == 8:
f.write(print_card_8(card))
else:
f.write(print_card_16(card))
def write_card(self, f, size=8):
for comp, nodes in iteritems(self.components):
card = ['SPC1', self.constraint_id, comp] + list(nodes)
if size == 8:
f.write(print_card_8(card))
else:
f.write(print_card_16(card))
def write_card(self, f, size=8, is_double=False):
if self.n:
card = ['GRDSET', None, self.cp, None, None, None, self.cd, self.seid]
if size == 8:
f.write(print_card_8(card))
else:
f.write(print_card_16(card))
def write_card(self, size=8, is_double=False):
skin = []
if self.is_skin:
skin = ['SKIN']
# checked in NX 2014 / MSC 2005.1
return self.comment + print_card_8(['SET1', self.sid] + skin + self.get_ids())
def write_bdf(self, bdf_filename, nodes, hexas):
f = open(bdf_filename, 'wb')
f.write('CEND\n')
f.write('BEGIN BULK\n')
for inode, node in enumerate(nodes):
(x, y, z) = node
f.write(print_card_8(['GRID', inode + 1, None, float(x), float(y), float(z)]))
pid = 1
for ielement, hexa in enumerate(hexas):
f.write(print_card_8(['CHEXA', ielement + 1, pid,] + list(hexa)))
f.write('PSOLID, 1, 1\n')
f.write('MAT1, 1, 1.0,,0.3\n')
f.write('ENDDATA\n')
f.close()
def write_card(self, f, size=8, property_id=None):
#print('PBARL.n = %s' % self.n)
if self.n:
if property_id is None:
i = arange(self.n)
else:
i = searchsorted(self.property_id, property_id)
#print('i = %s' % i)
#cid = [cid if cid != 0 else '' for cid in self.coord_id]
#group = set_blank_if_default(self.group, 'MSCBMLO')
#list_fields = ['PBARL', self.pid, self.Mid(), group, self.Type, None,
#None, None, None] + self.dim + [self.nsm]
#self.model.log.debug('*pbarl write pids=%s' % self.property_id)
for (j, pid, mid, group, Type, nsm) in zip(count(), self.property_id[i], self.material_id[i],
self.group[i], self.Type[i], self.nsm[i]):
dim = self.dim[j]
sgroup = set_blank_if_default(group, 'MSCBMLO')
list_fields = ['PBARL', pid, mid, group, Type, None,
None, None, None] + dim + [nsm]
if size == 8:
f.write(print_card_8(list_fields))
else:
f.write(print_card_16(list_fields))
def write_card(self, bdf_file, size=8):
if self.n:
for (nid, constraint, enforced) in zip(self.node_id, self.components, self.enforced_motion):
fields = ['SPCD', self.constraint_id, nid, constraint, enforced]
if size == 8:
bdf_file.write(print_card_8(fields))
else:
bdf_file.write(print_card_16(fields))
def export_caero_mesh(model: BDF,
caero_bdf_filename: str = 'caero.bdf',
is_subpanel_model: bool = True,
pid_method: str = 'aesurf') -> None:
"""write the CAERO cards as CQUAD4s that can be visualized"""
inid = 1
mid = 1
model.log.debug('---starting export_caero_model of %s---' %
caero_bdf_filename)
with open(caero_bdf_filename, 'w') as bdf_file:
#bdf_file.write('$ pyNastran: punch=True\n')
bdf_file.write('CEND\n')
bdf_file.write('BEGIN BULK\n')
_write_properties(model, bdf_file, pid_method=pid_method)
for caero_eid, caero in sorted(model.caeros.items()):
#assert caero_eid != 1, 'CAERO eid=1 is reserved for non-flaps'
scaero = str(caero).rstrip().split('\n')
if is_subpanel_model:
if caero.type == 'CAERO2':
continue
bdf_file.write('$ ' + '\n$ '.join(scaero) + '\n')
#bdf_file.write("$ CAEROID ID XLE YLE ZLE CHORD SPAN\n")
points, elements = caero.panel_points_elements()
_write_subpanel_strips(bdf_file, model, caero_eid, points,
elements)
npoints = points.shape[0]
#nelements = elements.shape[0]
for ipoint, point in enumerate(points):
x, y, z = point
bdf_file.write(
print_card_8(['GRID', inid + ipoint, None, x, y, z]))
#pid = caero_eid
#mid = caero_eid
jeid = 0
for elem in elements + inid:
p1, p2, p3, p4 = elem
eid2 = jeid + caero_eid
pidi = _get_subpanel_property(model,
caero_eid,
eid2,
pid_method=pid_method)
fields = ['CQUAD4', eid2, pidi, p1, p2, p3, p4]
bdf_file.write(print_card_8(fields))
jeid += 1
else:
# macro model
if caero.type == 'CAERO2':
continue
bdf_file.write('$ ' + '\n$ '.join(scaero) + '\n')
points = caero.get_points()
npoints = 4
for ipoint, point in enumerate(points):
x, y, z = point
bdf_file.write(
print_card_8(['GRID', inid + ipoint, None, x, y, z]))
pid = _get_subpanel_property(model,
caero_eid,
caero_eid,
pid_method=pid_method)
p1 = inid
p2 = inid + 1
p3 = inid + 2
p4 = inid + 3
bdf_file.write(
print_card_8(['CQUAD4', caero_eid, pid, p1, p2, p3, p4]))
inid += npoints
bdf_file.write('MAT1,%s,3.0E7,,0.3\n' % mid)
bdf_file.write('ENDDATA\n')
def write_card(self, size=8, is_double=False):
list_fields = ['TEMPP1', self.sid, self.eid, self.tbar] + self.t_stress
return print_card_8(list_fields)
def write_card(self, size=8, is_double=False):
card = self.repr_fields()
# this card has integers & strings, so it uses...
return self.comment + print_card_8(card)
def _interpolate_bar_to_node(eid_new, nid_new, mid, area, J, fbdf,
inid1, inid2,
xyz1_local, xyz2_local,
xyz1_global, xyz2_global,
nodal_result,
local_points, global_points, result):
"""
These edges have crossings. We rework:
y = m*x + b
into the long form:
y = (y2-y1) / (x2-x1) * (x-x1) + y1
to get:
y = y2 * (x-x1)/(x2-x1) + y1 * (1 - (x-x1)/(x2-x1))
or:
p = (x-x1)/(x2-x1) # percent
y = y2 * p + y1 * (1 - p)
Then we sub the y for the point (3 floats) and sub out x for the
y-coordinate:
percent = (y - y1_local) / (y2_local - y1_local)
avg_xyz = xyz2 * percent + xyz1 * (1 - percent)
Then we just crank the formula where we set the value of "y" to 0.0:
percent = (0. - y1_local) / (y2_local - y1_local)
"""
#print('edge =', edge)
y1_local = xyz1_local[1]
y2_local = xyz2_local[1]
percent = (0. - y1_local) / (y2_local - y1_local)
avg_local = xyz2_local * percent + xyz1_local * (1 - percent)
avg_global = xyz2_global * percent + xyz1_global * (1 - percent)
#print(' nid1=%s nid2=%s edge=%s' % (inid1, inid2, str(edge)))
#print(' xyz1_local=%s xyz2_local=%s' % (xyz1_local, xyz2_local))
#print(' avg_local=%s' % avg_local)
#print(' avg_global=%s' % avg_global)
#if fbdf is not None:
out_grid1 = ['GRID', nid_new, None, ] + list(xyz1_local)
out_grid2 = ['GRID', nid_new+1, None, ] + list(xyz2_local)
conrod = ['CONROD', eid_new, nid_new, nid_new + 1, mid, area, J]
#conm2 = ['CONM2', eid_new, nid_new, 0, 100.]
#fbdf.write('$ interpolated\n')
fbdf.write(print_card_8(out_grid1))
fbdf.write(print_card_8(out_grid2))
fbdf.write(print_card_8(conrod))
#fbdf.write(print_card_8(conm2))
local_points.append(avg_local)
global_points.append(avg_global)
xl, yl, zl = avg_local
xg, yg, zg = avg_global
if nodal_result is not None:
result1 = nodal_result[inid1]
result2 = nodal_result[inid2]
resulti = result2 * percent + result1 * (1 - percent)
result.append([0, xl, yl, zl, xg, yg, zg, resulti])
else:
result.append([0, xl, yl, zl, xg, yg, zg])
nid_new += 2
eid_new += 1
return eid_new, nid_new
def project(self, bdf_filename, x0, growth_rate=1.3, nlayers=10):
x = zeros(nlayers, dtype='float64')
for i in range(nlayers):
x[i] = x0 * growth_rate**i
#print(self.nodes.shape)
#print(self.elements.shape)
nnodes = self.nodes.shape[0]
nelements = self.elements.shape[0]
nnodes2 = nnodes * (nlayers + 1)
npents = nelements * nlayers
cnormals = self.get_normals(self.nodes, self.elements)
nnormals = self.get_normals_at_nodes(self.nodes, self.elements,
cnormals)
nodes = zeros((nnodes2, 3), dtype='float64')
pents = zeros((npents, 6), dtype='int32')
ih1 = 0
in1 = 0
in2 = nnodes
nodes[in1:in2, :] = self.nodes
in1 += nnodes
in2 += nnodes
ih1 = 0
ih2 = nelements
print('x = %s' % x)
for i in range(nlayers):
nodes_old = self.nodes
dx = nnormals * x[i]
nodes_new = self.nodes + dx
dn0 = nnodes * i
dn1 = nnodes * (i + 1)
elements_old = self.elements + nnodes * i
elements_new = self.elements + nnodes * (i + 1)
pents[ih1:ih2, 0:3] = deepcopy(elements_old)
pents[ih1:ih2, 3:6] = deepcopy(elements_new)
nodes[in1:in2, :] = deepcopy(nodes_new)
in1 += nnodes
in2 += nnodes
ih1 += nelements
ih2 += nelements
with open(bdf_filename, 'wb') as f:
f.write('CEND\n')
f.write('BEGIN BULK\n')
pents += 1
cid = None
for nid, grid in enumerate(nodes):
if nid % 5000 == 0:
print('writing nid=%s' % (nid + 1))
card = [
'GRID',
nid + 1,
cid,
] + list(grid)
f.write(print_card_16(card))
pid = 0
mid = 1
for eid, penta in enumerate(pents):
if (eid + 1) % nelements == 1:
pid += 1
card = ['PSOLID', pid, mid]
f.write(print_card_8(card))
print('bumping pid -> %s' % pid)
if eid % 5000 == 0:
print('writing eid=%s' % (eid + 1))
card = [
'CPENTA',
eid + 1,
pid,
] + list(penta)
f.write(print_card_8(card))
card = ['MAT1', mid, 1.0e7, None, 0.3]
f.write(print_card_8(card))
f.write('ENDDATA\n')
def test_card_double(self):
card = print_card_double(['GRID', 1, None, 120.322, -4.82872, 1.13362])
card_expected = 'GRID* 1 1.2032200000D+02-4.828720000D+00\n'
card_expected += '* 1.1336200000D+00\n'
self.assertEqual(card, card_expected)
#card = print_card_double(['CHEXA', 1, 2, 2, 3, 4, 1, 8, 5,
#6, 7])
#card_expected = ''
#card_expected += 'CHEXA* 1 2 2 3\n'
#card_expected +='* 4 1 8 5\n'
#card_expected +='* 6 7\n'
#card_expected += '* 1.1336200000D+00\n'
#card = print_card_double(['CTETRA',6437,1,14533,5598,1577,9976,42364,5599,42365,42363,30022,12904])
#card_expected = ''
#card_expected += 'CTETRA* 6437 1 14533 5598\n'
#card_expected += '* 1577 9976 42364 5599\n'
#card_expected += '* 42365 42363 30022 12904\n'
#card_expected += '* \n'
#card_expected +='CTETRA* 6437 1 14533 5598\n'
#card_expected +='* 1577 9976 42364 5599\n'
#card_expected +='* 42365 42363 30022 12904\n'
#card_expected +='* \n'
#self.assertEqual(card, card_expected)
#=============================
# mid E1 E2 nu12 G12 G1z G2z rho
card = print_card_8([
'MAT8',
6,
1.7e+7,
1.7e+7,
.98,
340000.,
180000.,
180000.,
0.0001712,
# a1 a2 tref
None,
71.33
])
card_expected = ''
card_expected += 'MAT8 6 1.7+7 1.7+7 .98 340000. 180000. 180000..0001712\n'
card_expected += ' 71.33\n'
self.assertEqual(card, card_expected)
card = print_card_16([
'MAT8',
6,
1.7e+7,
1.7e+7,
.98,
340000.,
180000.,
180000.,
0.0001712,
# a1 a2 tref
None,
71.33
])
card_expected = ''
card_expected += 'MAT8* 6 17000000. 17000000. .98\n'
card_expected += '* 340000. 180000. 180000. .0001712\n'
card_expected += '* 71.33\n'
card_expected += '*\n'
# bad
self.assertEqual(card, card_expected)
def write_card(self, size=8, is_double=False):
card = self.raw_fields()
return self.comment + print_card_8(card)
def write_card(self, size=8, is_double=False):
msg = self.comment
for nid, comp, scale in zip(self.node_ids, self.components,
self.scales):
msg += print_card_8(['DAREA', self.sid, nid, comp, scale])
return msg
def update_with_post(fname, dirname):
basename = os.path.basename(fname)
base = os.path.splitext(basename)[0]
bdf_name2 = os.path.join(dirname, basename)
f04_name2 = os.path.join(dirname, base + '.f04')
f06_name2 = os.path.join(dirname, base + '.f06')
op2_name2 = os.path.join(dirname, base + '.op2')
log_name2 = os.path.join(dirname, base + '.log')
with open(fname, 'r') as bdf_file:
lines = bdf_file.readlines()
post = -1
found_post = False
lines2 = None
for i, line in enumerate(lines):
line_upper = line.upper().split('$')[0].rstrip()
line_upper = line_upper.replace('\t', ' ').strip()
if line_upper.startswith('SOL '):
while ' ' in line_upper:
line_upper = line_upper.replace(' ', ' ')
if ('SOL 1' in line_upper or 'SOL 3' in line_upper or # modal
'SOL 5' in line_upper or 'SOL 7' in line_upper or
'SOL 8' in line_upper or 'SOL 21' in line_upper or
'SOL 24' in line_upper or 'SOL 25' in line_upper or
'SOL 26' in line_upper or 'SOL 27' in line_upper or
'SOL 28' in line_upper or 'SOL 29' in line_upper or
'SOL 47' in line_upper or 'SOL 48' in line_upper or
'SOL 60' in line_upper or 'SOL 61' in line_upper or
'SOL 62' in line_upper or 'SOL 63' in line_upper or
'SOL 64' in line_upper or 'SOL 66' in line_upper or
'SOL 67' in line_upper or 'SOL 68' in line_upper or
'SOL 74' in line_upper or 'SOL 75' in line_upper or
'SOL 76' in line_upper or 'SOL 81' in line_upper or
'SOL 82' in line_upper or 'SOL 83' in line_upper or
'SOL 88' in line_upper or 'SOL 89' in line_upper or
'SOL 91' in line_upper or 'SOL 99' in line_upper or
#'SOL 3' in line_upper or
'SOL 100' in line_upper or 'SOL USERDMAP' in line_upper or
'SOL MAIN' in line_upper or 'SOL XXX' in line_upper or
'SOL 101' in line_upper or 'SOL STATIC' in line_upper or
'SOL SESTATIC' in line_upper or 'SOL 103' in line_upper or
'SOL SEMODES' in line_upper or 'SOL 105' in line_upper or
'SOL BUCKLING' in line_upper or 'SOL 106' in line_upper or
'SOL NLSTATIC' in line_upper or # nonlinear static
'SOL 107' in line_upper or 'SOL SEMFREQ' in line_upper
or # direct complex frequency response
'SOL 108' in line_upper or
'SOL SEDFREQ' in line_upper or # direct frequency response
'SOL 109' in line_upper or 'SOL SEDTRAN' in line_upper
or # time linear?
'SOL 110' in line_upper or
'SOL SEDCEIG' in line_upper or # modal complex eigenvalue
'SOL 111' in line_upper or 'SOL SEMFREQ' in line_upper
or # modal frequency response
'SOL 112' in line_upper or
'SOL SEMTRAN' in line_upper or # modal transient response
'SOL 114' in line_upper or #
'SOL 115' in line_upper or #
'SOL 118' in line_upper or #
'SOL 126' in line_upper or 'SOL 129' in line_upper or
'SOL NLTRAN' in line_upper or # time nonlinear
#'SOL 112' in line_upper or
#'SOL 112' in line_upper or
#'SOL 112' in line_upper or
'SOL 144' in line_upper or # static aero
'SOL 145' in line_upper or # flutter
'SOL 146' in line_upper or # gust
'SOL 153' in line_upper or
'SOL NLSCSH' in line_upper or # nonlinear thermal
'SOL 159' in line_upper or # nonlinear transient thermal
'SOL 190' in line_upper or 'SOL DBTRANS' in line_upper or
'SOL 200' in line_upper): # optimization
continue
print('%r' % line_upper)
if '601' in line_upper:
# SOL 601 doesn't have a valid license
#SOL 601,129
if os.path.exists(bdf_name2):
print(f'removing {bdf_name2}')
os.remove(bdf_name2)
if os.path.exists(f04_name2):
os.remove(f04_name2)
if os.path.exists(f06_name2):
os.remove(f06_name2)
if os.path.exists(op2_name2):
os.remove(op2_name2)
if os.path.exists(log_name2):
os.remove(log_name2)
return None
if line_upper.startswith(('LABEL', 'TITLE', 'SUBTITLE')):
pass
elif 'PRGPOST' in line_upper or 'POSTEXT' in line_upper:
pass
elif 'PARAM' in line_upper and 'POST' in line_upper:
nlines_extra = 0
if '*' in line_upper:
#print(fname)
#print(line_upper)
nlines_extra = 1
card_lines = [line_upper]
param_post_fields = [
field.strip() for field in to_fields(card_lines, 'PARAM')[:3]
]
if ' ' in param_post_fields[1].strip(): # PARAM, POST 0
field2 = param_post_fields[1].split()[1]
try:
unused_found_post_value = int(field2)
except ValueError:
print(fname)
print(line_upper)
print(param_post_fields)
raise
else:
try:
unused_found_post_value = int(param_post_fields[2])
except ValueError:
print(fname)
print(line_upper)
print(param_post_fields)
raise
#if post_value == 0:
param_post_fields = ['PARAM', 'POST', post]
#print(fname)
#print(card_lines)
line = print_card_8(param_post_fields)
#print(f'post {nlines_extra}!')
lines2 = lines[:i] + [line] + lines[i + nlines_extra + 1:]
found_post = True
#if nlines_extra:
#print(fname)
#print(lines[i-2:i+3])
#print(lines2[i-2:i+3])
elif 'ENDDATA' in line_upper:
#print(fname)
if not found_post:
#print('enddata not found post')
lines2 = lines[i:] + [f'PARAM,POST,{post}\n', 'ENDDATA\n'
] + lines[i:]
break
elif 'ENDATA' in line_upper:
print(fname)
print('*en_data')
raise RuntimeError('ENDATA...')
if lines2 is None:
lines2 = lines[i:] + [f'PARAM,POST,{post}\n'] + lines[i:]
assert lines2 is not None, fname
if not RUN_NASTRAN:
return None
with open(bdf_name2, 'w') as bdf_file:
bdf_file.writelines(lines2)
return bdf_name2
def __repr__(self):
list_fields = self.raw_fields()
return self.comment + print_card_8(list_fields)
def write_card(self, bdf_file, size=8):
card = ['MPCADD', self.constraint_id] + self.mpc_ids
if size == 8:
bdf_file.write(print_card_8(card))
else:
bdf_file.write(print_card_16(card))
def write_card(self, size: int=8, is_double: bool=False) -> str:
list_fields = self.raw_fields()
return print_card_8(list_fields)
def slice_edges(xyz_cid0, xyz_cid, edges, nodal_result, plane_atol=1e-5,
plane_bdf_filename=None):
"""
Slices the shell elements
Parameters
----------
xyz_cid0 : (nnodes, 3) float ndarray
the node xyzs in the model
xyz_cid : (nnodes, 3) float ndarray
the node xyzs in the model in the local plane
edges : ???
the edges of the model
nodal_result : (nelements, ) float np.ndarray
the result to cut the model with
plane_atol : float; default=1e-5
the tolerance for a line that's located on the y=0 local plane
plane_bdf_filename : str; default=None
optionally write a BDF of the cut
Returns
-------
local_points_array : (N, 3) float ndarray
the xyz points in the cutting plane coordinate system
global_points_array : (N, 3) float ndarray
the xyz points in the global xyz coordinate system
result_array : (N, 7) float ndarray
inid, x, y, z, xg, yg, zg, result
TODO: split result_array, so we don't have mixed int/float/complex
results being all casted to the highest data type
"""
#plane_bdf_filename = 'plane_edge.bdf'
fbdf = StringIO()
fbdf.write('$pyNastran: punch=True\n')
fbdf.write('MAT1,1,3.0e7,,0.3\n')
cid = 0
local_points = []
global_points = []
nid_new = 1
eid_new = 1
mid = 1
area = 1.0
J = 1.0
result = []
for edge in edges:
(inid1, inid2) = edge
xyz1_local = xyz_cid[inid1]
xyz2_local = xyz_cid[inid2]
xyz1_global = xyz_cid0[inid1]
xyz2_global = xyz_cid0[inid2]
y1_local = xyz1_local[1]
y2_local = xyz2_local[1]
abs_y1_local = np.abs(y1_local)
abs_y2_local = np.abs(y2_local)
is_same_sign = np.sign(y1_local) == np.sign(y2_local)
is_far_from_plane = abs_y1_local > plane_atol and abs_y2_local > plane_atol
#print('edge=%s' % (edge))
#print(' xyz1-local=%s xyz2-local=%s' % (xyz1_local, xyz2_local))
#print(' xyz1-global=%s xyz2-global=%s' % (xyz1_global, xyz2_global))
#print(' is_same_sign=%s is_far_from_plane=%s' % (is_same_sign, is_far_from_plane))
if is_far_from_plane and is_same_sign:
#print('skip y1_local=%.3f y2_local=%.3f plane_atol=%.e' % (
#y1_local, y2_local, plane_atol))
continue
elif np.allclose(y1_local, y2_local, atol=plane_atol):
#print(' y-sym; nid1=%s nid2=%s edge=%s' % (nid1, nid2, str(edge)))
#print(' xyz1=%s xyz2=%s' % (xyz1_global, xyz2_global))
out_grid1 = ['GRID', nid_new, cid, ] + list(xyz1_local)
out_grid2 = ['GRID', nid_new + 1, cid, ] + list(xyz2_local)
conrod = ['CONROD', eid_new, nid_new, nid_new + 1, mid, area, J]
conm2 = ['CONM2', eid_new+1, nid_new, 0, 100.]
if plane_bdf_filename:
fbdf.write(print_card_8(out_grid1))
fbdf.write(print_card_8(out_grid2))
fbdf.write(print_card_8(conrod))
fbdf.write(print_card_8(conm2))
local_points.append(xyz1_local)
local_points.append(xyz2_local)
global_points.append(xyz1_global)
global_points.append(xyz2_global)
x1, y1, z1 = xyz1_local
x2, y2, z2 = xyz2_local
x1g, y1g, z1g = xyz1_global
x2g, y2g, z2g = xyz2_global
if nodal_result is not None:
result1 = nodal_result[inid1]
result2 = nodal_result[inid2]
result.append([inid1, x1, y1, z1, x1g, y1g, z1g, result1])
result.append([inid2, x2, y2, z2, x2g, y2g, z2g, result2])
else:
result.append([inid1, x1, y1, z1, x1g, y1g, z1g])
result.append([inid2, x2, y2, z2, x2g, y2g, z2g])
nid_new += 2
eid_new += 2
elif is_same_sign: # Labs == Lpos
# same sign, so no crossing
#print('*edge =', edge)
#print(" xyz1_global=%s xyz2_global=%s" % (xyz1_global, xyz2_global))
#print(" xyz1_local =%s xyz2_local =%s" % (xyz1_local, xyz2_local))
continue
else:
eid_new, nid_new = _interpolate_bar_to_node(
eid_new, nid_new, mid, area, J, fbdf,
inid1, inid2,
xyz1_local, xyz2_local,
xyz1_global, xyz2_global,
nodal_result,
local_points, global_points, result)
assert len(local_points) == len(result)
if plane_bdf_filename:
fbdf.write('$------\n')
if plane_bdf_filename:
fbdf.close()
if 0: # pragma: no cover
plane_bdf_filename = 'plane_edge2.bdf'
if plane_bdf_filename:
cid = 0
nid_new = 1
eid_new = 1
mid = 1
area = 1.0
J = 1.0
ipoint = 0
with open(plane_bdf_filename, 'w') as fbdf:
fbdf.write('$pyNastran: punch=True\n')
fbdf.write('MAT1,1,3.0e7,,0.3\n')
while ipoint < len(local_points):
xyz1_local = local_points[ipoint]
#resulti = result[ipoint]
print(xyz1_local)
nid = xyz1_local[0]
if nid == 0:
ipoint += 1
continue
xyz2_local = local_points[ipoint+1]
out_grid1 = ['GRID', nid_new, cid, ] + list(xyz1_local)
out_grid2 = ['GRID', nid_new + 1, cid, ] + list(xyz2_local)
conrod = ['CONROD', eid_new, nid_new, nid_new + 1, mid, area, J]
conm2 = ['CONM2', eid_new+1, nid_new, 0, 100.]
fbdf.write(print_card_8(out_grid1))
fbdf.write(print_card_8(out_grid2))
fbdf.write(print_card_8(conrod))
fbdf.write(print_card_8(conm2))
fbdf.write('$------\n')
ipoint += 2
nid_new += 2
eid_new += 1
# a hack to avoid making complicated code to sometimes write to the bdf
if plane_bdf_filename:
with open(plane_bdf_filename, 'w') as bdf_file:
bdf_file.write(fbdf.getvalue())
local_points_array = np.array(local_points)
global_points_array = np.array(global_points)
result_array = np.array(result)
return local_points_array, global_points_array, result_array
def stl_to_nastran(stl_filename, bdf_filename,
nnodes_offset=0, nelements_offset=0,
pid=100, mid=200,
size=8, is_double=False,
log=None):
if isinstance(stl_filename, string_types):
model = STL(log=log)
model.read_stl(stl_filename)
elif isinstance(stl_filename, STL):
model = stl_filename
else:
raise TypeError('stl_filename must be a string or STL; type=%s' % type(stl_filename))
nid = nnodes_offset + 1
cid = None
load_id = 10
#nodal_normals = model.get_normals_at_nodes(model.elements)
if size == 8:
print_card = print_card_8
elif size == 16:
if is_double:
print_card = print_card_16
else:
print_card = print_card_double
else:
raise RuntimeError('size=%r' % size)
with open(bdf_filename, 'w') as bdf:
bdf.write('CEND\n')
#bdf.write('LOAD = %s\n' % load_id)
bdf.write('BEGIN BULK\n')
nid2 = 1
magnitude = 100.
for x, y, z in model.nodes:
card = ['GRID', nid, cid, x, y, z]
bdf.write(print_card_16(card))
#nx, ny, nz = nodal_normals[nid2 - 1]
#card = ['FORCE', load_id, nid, cid, magnitude, nx, ny, nz]
#bdf.write(print_card_8(card))
nid += 1
nid2 += 1
eid = nelements_offset + 1
elements = model.elements + (nnodes_offset + 1)
for (n1, n2, n3) in elements:
card = ['CTRIA3', eid, pid, n1, n2, n3]
bdf.write(print_card_8(card))
eid += 1
t = 0.1
card = ['PSHELL', pid, mid, t]
bdf.write(print_card_8(card))
E = 1e7
G = None
nu = 0.3
card = ['MAT1', mid, E, G, nu]
bdf.write(print_card_8(card))
bdf.write('ENDDATA\n')
return bdf
def tecplot_to_nastran(tecplot_filename, bdf_filename, log=None, debug=True):
"""Converts a Tecplot file to Nastran."""
if isinstance(tecplot_filename, string_types):
model = read_tecplot(tecplot_filename, log=log, debug=debug)
else:
model = tecplot_filename
removed_nodes = False
shell_pid = 1
solid_pid = 2
mid = 1
istart = 1
with open(bdf_filename, 'w') as bdf_file:
bdf_file.write('$pyNastran : punch=True\n')
for inode, node in enumerate(model.xyz):
card = [
'GRID',
inode + 1,
None,
] + list(node)
bdf_file.write(print_card_8(card))
if len(model.tri_elements):
# tris only
itri = 0
for itri, tri in enumerate(model.tri_elements):
card = ['CTRIA3', itri + 1, shell_pid] + list(tri)
bdf_file.write(print_card_8(card))
#istart += bdf_model
if len(model.quad_elements):
if len(model.tri_elements) != 0:
# if there are tris, then we assume the quads are good
for iquad, quad in enumerate(model.quad_elements):
card = ['CQUAD4', iquad + 1, shell_pid] + list(quad)
bdf_file.write(print_card_8(card))
else:
# need to split out the CQUAD4 elements
istart = itri + 1
for iquad, quad in enumerate(model.quad_elements):
if quad[2] == quad[3]:
# if it's a tri
card = ['CTRIA3', istart + iquad, shell_pid] + list(
quad[:3])
else:
card = ['CQUAD4', istart + iquad, shell_pid
] + list(quad)
bdf_file.write(print_card_8(card))
istart += iquad
if len(model.tri_elements) + len(model.quad_elements):
card = ['PSHELL', shell_pid, mid, 0.1]
bdf_file.write(print_card_8(card))
if len(model.tet_elements) + len(model.hexa_elements):
card = ['PSOLID', solid_pid, mid]
bdf_file.write(print_card_8(card))
if len(model.tet_elements):
for itet, tet in enumerate(model.tet_elements):
card = ['CTETRA', istart + itet, solid_pid] + list(tet)
bdf_file.write(print_card_8(card))
if len(model.hexa_elements):
# need to split out the CTETRA and CPENTA elements
for ihex, hexa in enumerate(model.hexa_elements):
uhexa = unique(hexa)
nnodes_unique = len(uhexa)
nids = hexa[:nnodes_unique]
centroid_y = model.xyz[nids, 1].max()
if centroid_y < 0:
removed_nodes = True
continue
if nnodes_unique == 4:
card = ['CTETRA', istart + ihex, solid_pid] + list(nids)
assert len(card) == 7, len(card)
elif nnodes_unique == 5:
card = ['CPYRAM', istart + ihex, solid_pid] + list(nids)
assert len(card) == 8, len(card)
elif nnodes_unique == 6:
card = ['CPENTA', istart + ihex, solid_pid] + list(nids)
assert len(card) == 9, len(card)
elif nnodes_unique == 8:
card = ['CHEXA', istart + ihex, solid_pid] + list(hexa)
bdf_file.write(print_card_8(card))
E = 3.0e7
G = None
nu = 0.3
card = ['MAT1', mid, E, G, nu]
bdf_file.write(print_card_8(card))
if removed_nodes:
bdf_model = BDF(debug=debug)
bdf_model.read_bdf(bdf_filename)
remove_unused(bdf_model)
def test_pbar_2(self):
"""tests the PBAR BDF add"""
pid = 1
mid = 2
A = None
I1 = I2 = None
J = None
nsm = None
c1 = c2 = d1 = d2 = e1 = e2 = f1 = f2 = None
k1 = k2 = None
i12 = 3.
fields = [
'PBAR', pid, mid, A, I1, I2, J, nsm, None, c1, c2, d1, d2, e1, e2,
f1, f2, k1, k2, i12
]
card = print_card_8(fields)
lines = card.split('\n')
model = BDF(debug=False)
card = model.process_card(lines)
cardi = BDFCard(card)
pbar = PBAR.add_card(cardi)
self.assertEqual(pbar.pid, 1)
self.assertEqual(pbar.mid, 2)
self.assertEqual(pbar.A, 0.0)
self.assertEqual(pbar.i1, 0.0)
self.assertEqual(pbar.i2, 0.0)
self.assertEqual(pbar.j, 0.0)
self.assertEqual(pbar.nsm, 0.0)
self.assertEqual(pbar.i12, 3.0)
self.assertEqual(pbar.c1, 0.0)
self.assertEqual(pbar.c2, 0.0)
self.assertEqual(pbar.d1, 0.0)
self.assertEqual(pbar.d2, 0.0)
self.assertEqual(pbar.e1, 0.0)
self.assertEqual(pbar.e2, 0.0)
self.assertEqual(pbar.k1, None)
self.assertEqual(pbar.k2, None)
#--------------------------------------------------------
A = 6.
I1 = 5.
I2 = 4.
J = 3.
nsm = 2.
c1 = c2 = d1 = d2 = e1 = e2 = f1 = f2 = None
k1 = k2 = 1e2
i12 = 0.
fields = [
'PBAR', pid, mid, A, I1, I2, J, nsm, None, c1, c2, d1, d2, e1, e2,
f1, f2, k1, k2, i12
]
card = print_card_8(fields)
lines = card.split('\n')
model = BDF(debug=False)
card = model.process_card(lines)
cardi = BDFCard(card)
pbar = PBAR.add_card(cardi)
self.assertEqual(pbar.pid, 1)
self.assertEqual(pbar.mid, 2)
self.assertEqual(pbar.A, 6.0)
self.assertEqual(pbar.i1, 5.0)
self.assertEqual(pbar.i2, 4.0)
self.assertEqual(pbar.j, 3.0)
self.assertEqual(pbar.nsm, 2.0)
self.assertEqual(pbar.i12, 0.0)
self.assertEqual(pbar.c1, 0.0)
self.assertEqual(pbar.c2, 0.0)
self.assertEqual(pbar.d1, 0.0)
self.assertEqual(pbar.d2, 0.0)
self.assertEqual(pbar.e1, 0.0)
self.assertEqual(pbar.e2, 0.0)
self.assertEqual(pbar.k1, 1e2)
self.assertEqual(pbar.k2, 1e2)
def write_card(self, size=8, is_double=False):
card = self.repr_fields()
if size == 8:
return self.comment + print_card_8(card)
return self.comment + print_card_16(card)
def write_card(self, size: int = 8, is_double: bool = False) -> str:
card = self.repr_fields()
msg = self.comment + print_card_8(card)
return msg
def write_card(self, size=8, is_double=False):
nodes = self.node_ids
data = ['CQUADX4', self.eid, self.Pid()] + nodes + [self.theta]
return self.comment + print_card_8(data)
def write_card_by_index(self, bdf_file, i, size=8):
for (eid, pid, n) in zip(self.element_id[i], self.property_id[i], self.node_ids[i]):
card = ['CQUAD4', eid, pid, n[0], n[1], n[2], n[3]]
bdf_file.write(print_card_8(card))
def _write_skin_solid_faces(model,
skin_filename,
face_map,
nids_to_write,
eids_to_write,
mids_to_write,
eid_set,
eid_shell,
pid_shell,
mid_shell,
write_solids=False,
write_shells=True,
size=8,
is_double=False,
encoding=None):
"""
helper method for ``write_skin_solid_faces``
Parameters
----------
model : BDF()
the BDF object
skin_filename : str
the file to write
face_map : dict[sorted_face] : face
sorted_face : List[int, int, int] / List[int, int, int, int]
face : List[int, int, int] / List[int, int, int, int]
nids_to_write : List[int, int, ...]
list of node ids to write
eids_to_write : List[int, int, ...]
list of element ids to write
mids_to_write : List[int, int, ...]
list of material ids to write
eid_set : Set[int]
is the type right???
eid_shell : int
the next id to use for the shell id
pid_shell : int
the next id to use for the shell property
mid_shell : int
the next id to use for the shell material
write_solids : bool; default=False
write solid elements that have skinned faces
write_shells : bool; default=True
write shell elements
size : int; default=8
the field width
is_double : bool; default=False
double precision flag
encoding : str; default=None -> system default
the string encoding
"""
#encoding = model.get_encoding(encoding)
with open(skin_filename, 'w') as bdf_file:
bdf_file.write('$ pyNastran: punch=True\n')
for nid in sorted(nids_to_write):
if nid is None:
continue
node = model.nodes[nid]
bdf_file.write(node.write_card(size=size, is_double=is_double))
for cid, coord in model.coords.items():
if cid == 0:
continue
bdf_file.write(coord.write_card(size=size, is_double=is_double))
if write_solids:
for eid in sorted(eids_to_write):
elem = model.elements[eid]
bdf_file.write(elem.write_card(size=size))
for pid, prop in model.properties.items():
bdf_file.write(prop.write_card(size=size, is_double=is_double))
for mid in sorted(mids_to_write):
material = model.materials[mid]
bdf_file.write(
material.write_card(size=size, is_double=is_double))
del eid, pid, mid
if write_shells:
mids_to_write.sort()
for imid, mid in enumerate(mids_to_write):
card = ['PSHELL', pid_shell + imid, mid_shell + imid, 0.1]
bdf_file.write(print_card_8(card))
card = ['MAT1', mid_shell + imid, 3.e7, None, 0.3]
#bdf_file.write(model.materials[mid].comment)
bdf_file.write(print_card_8(card))
for face, eids in eid_set.items():
face_raw = face_map[face]
nface = len(face)
#assert len(eids) == 1, eids
#for eid in sorted(eids):
#elem = model.elements[eid]
#print(elem)
#break
#elem = next(itervalues(model.elements)) # old
elem = model.elements[eids[0]]
#pid = next(iterkeys(model.properties))
pid = elem.Pid()
prop = model.properties[pid]
try:
mid = prop.Mid()
except AttributeError:
continue
#print('mids_to_write = %s' % mids_to_write)
#print('mids = ', model.materials.keys())
imid = mids_to_write.index(mid)
if nface == 3:
card = ['CTRIA3', eid_shell, pid_shell + imid
] + list(face_raw)
elif nface == 4:
card = ['CQUAD4', eid_shell, pid_shell + imid
] + list(face_raw)
elif nface == 4:
card = ['CQUAD4', eid_shell, pid_shell + imid
] + list(face_raw)
elif nface == 6:
card = ['CTRIA6', eid_shell, pid_shell + imid
] + list(face_raw)
elif nface == 8:
card = ['CQUAD8', eid_shell, pid_shell + imid
] + list(face_raw)
else:
raise NotImplementedError('face=%s len(face)=%s' %
(face, nface))
bdf_file.write(print_card_8(card))
eid_shell += 1
#elem = model.elements[eid]
#bdf_file.write(elem.write_card(size=size))
#for pid, prop in model.properties.items():
#bdf_file.write(prop.write_card(size=size, is_double=is_double))
bdf_file.write('ENDDATA\n')
