def create_element_groups(self):
log.info('Creating element groups for model')
self._elset = {}
for element in self.elements:
for egroup in element.groups:
try:
self._elset[egroup].add(element)
except KeyError:
log.info('New element group: {0}'.format(egroup))
self._elset[egroup] = set([element])
def create_element_groups(self):
log.info('Creating element groups for model')
self._elset = {}
for element in self.elements:
for egroup in element.groups:
try:
self._elset[egroup].add(element)
except KeyError:
log.info('New element group: {0}'.format(egroup))
self._elset[egroup] = set([element])
def create_node_groups(self):
log.info('Creating node groups for model')
self._nset = {}
for node in self.nodes:
for ngroup in node.groups:
try:
self._nset[ngroup].add(node)
except KeyError:
log.info('New node group: {0}'.format(ngroup))
self._nset[ngroup] = set([node])
def create_node_groups(self):
log.info('Creating node groups for model')
self._nset = {}
for node in self.nodes:
for ngroup in node.groups:
try:
self._nset[ngroup].add(node)
except KeyError:
log.info('New node group: {0}'.format(ngroup))
self._nset[ngroup] = set([node])
def assign_material(**kwds):
elements = kwds.get('elements')
material = kwds.get('material')
log.info('Assigning material to {0} elements...'.format(len(elements)))
for element in elements:
#element.material = material
try:
element.assign_material(material)
except AttributeError as err:
log.error(err)
return True
def assign_material(**kwds):
elements = kwds.get('elements')
material = kwds.get('material')
log.info('Assigning material to {0} elements...'.format(len(elements)))
for element in elements:
#element.material = material
try:
element.assign_material(material)
except AttributeError as err:
log.error(err)
return True
def static_solve(self, **kwds):
log.info("Creating stiffness matrix")
K = self.assemble_stiffness_matrix(method='lagrange').tocsr()
log.info("Creating force vector")
R = self.assemble_force_vector(method='lagrange')
log.info("Solving")
U = teefem.common.solve(K, R)
if kwds.get('export_matrices', False):
np.savetxt('K.txt', K.todense(), fmt='%+05.2E')
np.savetxt('R.txt', R, fmt='%+05.2E')
np.savetxt('U.txt', U, fmt='%+05.2E')
log.info("Updating fields")
for element in self.elements:
element.update(U)
def static_solve(self, **kwds):
log.info("Creating stiffness matrix")
K = self.assemble_stiffness_matrix(method = 'lagrange').tocsr()
log.info("Creating force vector")
R = self.assemble_force_vector(method = 'lagrange')
log.info("Solving")
U = teefem.common.solve(K,R)
if kwds.get('export_matrices',False):
np.savetxt('K.txt', K.todense(), fmt='%+05.2E')
np.savetxt('R.txt', R, fmt='%+05.2E')
np.savetxt('U.txt', U, fmt='%+05.2E')
log.info("Updating fields")
for element in self.elements:
element.update(U)
def status(self, fulloutput=False):
ret = ''
ret += 'Shape groups:\n'
for group_ma in self.group_ma:
ret += '{0:10s} : {1} shapes\n'.format(
group_ma, len(self.group_ma[group_ma]))
ret += 'Node groups:\n'
for group_no in self.group_no:
ret += '{0:10s} : {1} nodes\n'.format(group_no,
len(self.group_no[group_no]))
if fulloutput:
ret += 'Nodes: \n'
for (key, val) in self.nodes.iteritems():
ret += '{0} : (x,y,z) -> ({1},{2},{3})\n'.format(
key, val.x, val.y, val.z)
return ret
def mesh(**kwds):
fileformat = os.path.splitext(kwds['filename'])[-1]
func = {
'.msh': parsemsh,
# '.med': parsemed,
'.mail': parsemail,
}
with open(kwds['filename'], 'r') as filehandler:
return func[fileformat](filehandler)
log.info("Module {0} loaded.".format(__file__))
def buckling_solve(self, **kwds):
''' Buckling analysis '''
n = kwds.get('n_modes', 1)
log.info("Creating stiffness matrix")
K = self.assemble_stiffness_matrix(method='none').todense()
log.info("Creating geometric stiffness matrix")
S = self.assemble_geometric_stiffness_matrix(method='none').todense()
# Eliminate dofs w boundary conditions
from teefem import remdof
doflist = []
for node in self.nodes:
for j in range(self.nodedim):
dof = self.nodedofs[j]
if node.hasbc(dof):
doflist.append(node.gdof[j])
K = remdof.removedofs(K, doflist)
S = remdof.removedofs(S, doflist)
if kwds.get('export_matrices', False):
np.savetxt('K.txt', K, fmt='%+05.2E')
np.savetxt('S.txt', S, fmt='%+05.2E')
from scipy.linalg import eig
valsy, vecsy = eig(K, b=S)
print("Lambda : {0}".format(np.sort(np.sqrt(valsy.real))))
#print("freq (Y): {0}".format(np.sort(np.sqrt(valsy.real)/(2*np.pi))))
if kwds.get('export_matrices', False):
np.savetxt('vals1.txt', np.sqrt(valsy.real), fmt='%+05.2E')
np.savetxt('vecs1.txt', vecsy, fmt='%+05.2E')
# log.info("Solving")
# w,v = scipy.sparse.linalg.eigs(K, k=n, M=M)
# print w
##
# if kwds.get('export_matrices',False):
# np.savetxt('vals2.txt', w, fmt='%+05.2E')
# np.savetxt('vecs2.txt', v, fmt='%+05.2E')
log.info("Updating primary field")
# Tämä on nyt varsin huonosti tehty. Kentät pitäisi päivittää jotenkin
# järkevämpään tietorakenteeseen
for node in self.nodes:
node.bucklingvals = []
node.bucklingvecs = []
buckling_indices = np.argsort(np.sqrt(valsy.real))
for buckling_idx in buckling_indices[0:n]:
val = np.sqrt(valsy[buckling_idx].real)
print val
vec = vecsy[:, buckling_idx]
newvec = remdof.insertdofs(vec, doflist)
for node in self.nodes:
dof = node.gdof[0]
node.bucklingvals.append(val)
node.bucklingvecs.append(newvec[dof])
# -*- coding: utf-8 -*-
# Ei kannata from .. import *, koska ladataan silloin analyysin kannalta ihan turhia osia
from teefem import log
# from dkt import *
# from mindlin import *
# from min3 import *
# from dsts6 import *
from common import *
# from c_plan import *
# import membrane
#from common import GenericMechanicModel
log.info("Module {0} loaded.".format(__file__))
def buckling_solve(self, **kwds):
''' Buckling analysis '''
n = kwds.get('n_modes', 1)
log.info("Creating stiffness matrix")
K = self.assemble_stiffness_matrix(method = 'none').todense()
log.info("Creating geometric stiffness matrix")
S = self.assemble_geometric_stiffness_matrix(method = 'none').todense()
# Eliminate dofs w boundary conditions
from teefem import remdof
doflist = []
for node in self.nodes:
for j in range(self.nodedim):
dof = self.nodedofs[j]
if node.hasbc(dof):
doflist.append(node.gdof[j])
K = remdof.removedofs(K,doflist)
S = remdof.removedofs(S,doflist)
if kwds.get('export_matrices',False):
np.savetxt('K.txt', K, fmt='%+05.2E')
np.savetxt('S.txt', S, fmt='%+05.2E')
from scipy.linalg import eig
valsy,vecsy = eig(K,b=S)
print("Lambda : {0}".format(np.sort(np.sqrt(valsy.real))))
#print("freq (Y): {0}".format(np.sort(np.sqrt(valsy.real)/(2*np.pi))))
if kwds.get('export_matrices',False):
np.savetxt('vals1.txt', np.sqrt(valsy.real), fmt='%+05.2E')
np.savetxt('vecs1.txt', vecsy, fmt='%+05.2E')
# log.info("Solving")
# w,v = scipy.sparse.linalg.eigs(K, k=n, M=M)
# print w
##
# if kwds.get('export_matrices',False):
# np.savetxt('vals2.txt', w, fmt='%+05.2E')
# np.savetxt('vecs2.txt', v, fmt='%+05.2E')
log.info("Updating primary field")
# Tämä on nyt varsin huonosti tehty. Kentät pitäisi päivittää jotenkin
# järkevämpään tietorakenteeseen
for node in self.nodes:
node.bucklingvals = []
node.bucklingvecs = []
buckling_indices = np.argsort(np.sqrt(valsy.real))
for buckling_idx in buckling_indices[0:n]:
val = np.sqrt(valsy[buckling_idx].real)
print val
vec = vecsy[:,buckling_idx]
newvec = remdof.insertdofs(vec,doflist)
for node in self.nodes:
dof = node.gdof[0]
node.bucklingvals.append(val)
node.bucklingvecs.append(newvec[dof])