Source code for pyNastran.op2.tables.oes_stressStrain.oes_nonlinear_rod

from typing import List
import numpy as np
from numpy import zeros

from pyNastran.utils.numpy_utils import integer_types
from pyNastran.op2.result_objects.op2_objects import get_times_dtype
from pyNastran.op2.tables.oes_stressStrain.real.oes_objects import OES_Object
from pyNastran.f06.f06_formatting import write_floats_13e, _eigenvalue_header


[docs]class RealNonlinearRodArray(OES_Object): # 89-CRODNL, 92-CONRODNL """ :: ELEMENT-ID = 102 N O N L I N E A R S T R E S S E S I N R O D E L E M E N T S ( C R O D ) TIME AXIAL STRESS EQUIVALENT TOTAL STRAIN EFF. STRAIN EFF. CREEP LIN. TORSIONAL STRESS PLASTIC/NLELAST STRAIN STRESS 2.000E-02 1.941367E+01 1.941367E+01 1.941367E-04 0.0 0.0 0.0 3.000E-02 1.941367E+01 1.941367E+01 1.941367E-04 0.0 0.0 0.0 """ def __init__(self, data_code, is_sort1, isubcase, dt): """tested by elements/loadstep_elements.op2""" OES_Object.__init__(self, data_code, isubcase, apply_data_code=True) #self.code = [self.format_code, self.sort_code, self.s_code] self.nelements = 0 # result specific @property def is_real(self) -> bool: return True @property def is_complex(self) -> bool: return False @property def nnodes_per_element(self) -> int: return 1 def _reset_indices(self) -> None: self.itotal = 0 self.ielement = 0 def _get_msgs(self): raise NotImplementedError()
[docs] def get_headers(self) -> List[str]: headers = ['axial_stress', 'equiv_stress', 'total_strain', 'effective_plastic_creep_strain', 'effective_creep_strain', 'linear_torsional_stress'] return headers
[docs] def build(self): """sizes the vectorized attributes of the RealNonlinearRodArray""" #print('ntimes=%s nelements=%s ntotal=%s' % (self.ntimes, self.nelements, self.ntotal)) assert self.ntimes > 0, 'ntimes=%s' % self.ntimes assert self.nelements > 0, 'nelements=%s' % self.nelements assert self.ntotal > 0, 'ntotal=%s' % self.ntotal #self.names = [] self.nelements //= self.ntimes self.itime = 0 self.ielement = 0 self.itotal = 0 #self.ntimes = 0 #self.nelements = 0 #print("ntimes=%s nelements=%s ntotal=%s" % (self.ntimes, self.nelements, self.ntotal)) dtype, idtype, fdtype = get_times_dtype(self.nonlinear_factor, self.size, self.analysis_fmt) self._times = zeros(self.ntimes, dtype=dtype) self.element = zeros(self.nelements, dtype=idtype) #[axial_stress, equiv_stress, total_strain, effective_plastic_creep_strain, # effective_creep_strain, linear_torsional_stress] self.data = zeros((self.ntimes, self.nelements, 6), dtype=fdtype)
[docs] def build_dataframe(self): """creates a pandas dataframe""" import pandas as pd headers = self.get_headers() if self.nonlinear_factor not in (None, np.nan): #Time 0.02 0.04 #ElementID Item #102 axial_stress 19.413668 76.139496 # equiv_stress 19.413668 76.139496 # total_strain 0.000194 0.000761 # effective_plastic_creep_strain 0.000000 0.000000 # effective_creep_strain 0.000000 0.000000 # linear_torsional_stress 0.000000 0.000000 column_names, column_values = self._build_dataframe_transient_header() self.data_frame = self._build_pandas_transient_elements( column_values, column_names, headers, self.element, self.data) else: df1 = pd.DataFrame(self.element).T df1.columns = ['ElementID'] df2 = pd.DataFrame(self.data[0]) df2.columns = headers self.data_frame = df1.join([df2])
#print(self.data_frame) def __eq__(self, table): # pragma: no cover self._eq_header(table) assert self.is_sort1 == table.is_sort1 if not np.array_equal(self.data, table.data): msg = 'table_name=%r class_name=%s\n' % (self.table_name, self.__class__.__name__) msg += '%s\n' % str(self.code_information()) ntimes = self.data.shape[0] i = 0 if self.is_sort1: for itime in range(ntimes): for ieid, eid, in enumerate(self.element): t1 = self.data[itime, ieid, :] t2 = table.data[itime, ieid, :] (axial_stress1, equiv_stress1, total_strain1, effective_plastic_creep_strain1, effective_creep_strain1, linear_torsional_stress1) = t1 (axial_stress2, equiv_stress2, total_strain2, effective_plastic_creep_strain2, effective_creep_strain2, linear_torsional_stress2) = t2 if not np.allclose(t1, t2): #if not np.array_equal(t1, t2): msg += '%s\n (%s, %s, %s, %s, %s, %s)\n (%s, %s, %s, %s, %s, %s)\n' % ( eid, axial_stress1, equiv_stress1, total_strain1, effective_plastic_creep_strain1, effective_creep_strain1, linear_torsional_stress1, axial_stress2, equiv_stress2, total_strain2, effective_plastic_creep_strain2, effective_creep_strain2, linear_torsional_stress2) i += 1 if i > 10: print(msg) raise ValueError(msg) else: raise NotImplementedError(self.is_sort2) if i > 0: print(msg) raise ValueError(msg) return True def add_sort1(self, dt, eid, axial_stress, equiv_stress, total_strain, effective_plastic_creep_strain, effective_creep_strain, linear_torsional_stress): """unvectorized method for adding SORT1 transient data""" assert isinstance(eid, integer_types) and eid > 0, 'dt=%s eid=%s' % (dt, eid) self._times[self.itime] = dt self.element[self.ielement] = eid self.data[self.itime, self.ielement, :] = [ axial_stress, equiv_stress, total_strain, effective_plastic_creep_strain, effective_creep_strain, linear_torsional_stress ] self.ielement += 1
[docs] def get_stats(self, short: bool=False) -> List[str]: if not self.is_built: return [ '<%s>\n' % self.__class__.__name__, f' ntimes: {self.ntimes:d}\n', f' ntotal: {self.ntotal:d}\n', ] ntimes, nelements, _ = self.data.shape assert self.ntimes == ntimes, 'ntimes=%s expected=%s' % (self.ntimes, ntimes) assert self.nelements == nelements, 'nelements=%s expected=%s' % (self.nelements, nelements) msg = [] if self.nonlinear_factor not in (None, np.nan): # transient msg.append(' type=%s ntimes=%i nelements=%i\n' % (self.__class__.__name__, ntimes, nelements)) ntimes_word = 'ntimes' else: msg.append(' type=%s nelements=%i\n' % (self.__class__.__name__, nelements)) ntimes_word = '1' msg.append(' eType\n') headers = self.get_headers() n = len(headers) msg.append(' data: [%s, nelements, %i] where %i=[%s]\n' % (ntimes_word, n, n, str(', '.join(headers)))) msg.append(f' data.shape = {self.data.shape}\n') msg.append(f' element type: {self.element_name}-{self.element_type}\n') msg += self.get_data_code() return msg
[docs] def write_f06(self, f06_file, header=None, page_stamp='PAGE %s', page_num: int=1, is_mag_phase: bool=False, is_sort1: bool=True): if header is None: header = [] if is_sort1: msg = [ ' N O N L I N E A R S T R E S S E S I N R O D E L E M E N T S ( C R O D )\n', ' \n', ' ELEMENT-ID AXIAL STRESS EQUIVALENT TOTAL STRAIN EFF. STRAIN EFF. CREEP LIN. TORSIONAL\n', ' STRESS PLASTIC/NLELAST STRAIN STRESS\n' ] else: msg = [ ' N O N L I N E A R S T R E S S E S I N R O D E L E M E N T S ( C R O D )\n', ' \n', ' TIME AXIAL STRESS EQUIVALENT TOTAL STRAIN EFF. STRAIN EFF. CREEP LIN. TORSIONAL\n', ' STRESS PLASTIC/NLELAST STRAIN STRESS\n' ] if self.is_sort1: page_num = self._write_sort1_as_sort1(header, page_stamp, page_num, f06_file, msg) else: raise NotImplementedError('RealNonlinearRodArray') return page_num
def _write_sort1_as_sort1(self, header, page_stamp, page_num, f06_file, msg_temp): ntimes = self.data.shape[0] eids = self.element #is_odd = False #nwrite = len(eids) for itime in range(ntimes): dt = self._times[itime] header = _eigenvalue_header(self, header, itime, ntimes, dt) f06_file.write(''.join(header + msg_temp)) #print("self.data.shape=%s itime=%s ieids=%s" % (str(self.data.shape), itime, str(ieids))) axial = self.data[itime, :, 0] eqs = self.data[itime, :, 1] total = self.data[itime, :, 2] epcs = self.data[itime, :, 3] ecs = self.data[itime, :, 4] lts = self.data[itime, :, 5] #print "dt=%s axials=%s eqs=%s ts=%s epcs=%s ecs=%s lts=%s" %(dt,axial,eqs,ts,epcs,ecs,lts) #msgE[eid] = ' ELEMENT-ID = %8i\n' % (eid) #if eid not in msgT: #msgT[eid] = [] #msgT[eid].append(' %9.3E %13.6E %13.6E %13.6E %13.6E %13.6E %13.6E\n' % (dt, axial, eqs, ts, epcs, ecs, lts)) for eid, axiali, eqsi, totali, epcsi, ecsi, ltsi in zip(eids, axial, eqs, total, epcs, ecs, lts): ([saxial, seqs, stotal, sepcs, secs, slts]) = write_floats_13e( [axiali, eqsi, totali, epcsi, ecsi, ltsi]) f06_file.write( ' %8i %-13s %-13s %-13s %-13s %-13s %s\n' % ( eid, saxial, seqs, stotal, sepcs, secs, slts)) f06_file.write(page_stamp % page_num) page_num += 1 return page_num - 1
[docs] def write_op2(self, op2_file, op2_ascii, itable, new_result, date, is_mag_phase=False, endian='>'): """writes an OP2""" import inspect from struct import Struct, pack frame = inspect.currentframe() call_frame = inspect.getouterframes(frame, 2) op2_ascii.write(f'{self.__class__.__name__}.write_op2: {call_frame[1][3]}\n') if itable == -1: self._write_table_header(op2_file, op2_ascii, date) itable = -3 #if isinstance(self.nonlinear_factor, float): #op2_format = '%sif' % (7 * self.ntimes) #raise NotImplementedError() #else: #op2_format = 'i21f' #s = Struct(op2_format) eids = self.element # table 4 info #ntimes = self.data.shape[0] #nnodes = self.data.shape[1] nelements = self.data.shape[1] # 21 = 1 node, 3 principal, 6 components, 9 vectors, 2 p/ovm #ntotal = ((nnodes * 21) + 1) + (nelements * 4) ntotali = self.num_wide ntotal = ntotali * nelements #print('shape = %s' % str(self.data.shape)) #assert self.ntimes == 1, self.ntimes device_code = self.device_code op2_ascii.write(f' ntimes = {self.ntimes}\n') eids_device = self.element * 10 + self.device_code #fmt = '%2i %6f' #print('ntotal=%s' % (ntotal)) #assert ntotal == 193, ntotal if self.is_sort1: struct1 = Struct(endian + b'i6f') else: raise NotImplementedError('SORT2') op2_ascii.write(f'nelements={nelements:d}\n') for itime in range(self.ntimes): #print('3, %s' % itable) self._write_table_3(op2_file, op2_ascii, new_result, itable, itime) # record 4 #print('stress itable = %s' % itable) itable -= 1 #print('4, %s' % itable) header = [4, itable, 4, 4, 1, 4, 4, 0, 4, 4, ntotal, 4, 4 * ntotal] op2_file.write(pack('%ii' % len(header), *header)) op2_ascii.write('r4 [4, 0, 4]\n') op2_ascii.write(f'r4 [4, {itable:d}, 4]\n') op2_ascii.write(f'r4 [4, {4 * ntotal:d}, 4]\n') axial = self.data[itime, :, 0] eqs = self.data[itime, :, 1] total = self.data[itime, :, 2] epcs = self.data[itime, :, 3] ecs = self.data[itime, :, 4] lts = self.data[itime, :, 5] for eid, axiali, eqsi, totali, epcsi, ecsi, ltsi in zip(eids_device, axial, eqs, total, epcs, ecs, lts): data = [eid, axiali, eqsi, totali, epcsi, ecsi, ltsi] op2_ascii.write(' eid=%s data=%s\n' % (eids_device, str(data))) op2_file.write(struct1.pack(*data)) itable -= 1 header = [4 * ntotal,] op2_file.write(pack('i', *header)) op2_ascii.write('footer = %s\n' % header) new_result = False return itable