Source code for pyNastran.op2.tables.oes_stressStrain.complex.oes_springs

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_complex_times_dtype
from pyNastran.op2.tables.oes_stressStrain.real.oes_objects import (
    StressObject, StrainObject, OES_Object)
from pyNastran.f06.f06_formatting import write_imag_floats_13e, _eigenvalue_header


[docs]class ComplexSpringDamperArray(OES_Object): def __init__(self, data_code, is_sort1, isubcase, dt): OES_Object.__init__(self, data_code, isubcase, apply_data_code=False) #self.code = [self.format_code, self.sort_code, self.s_code] #self.ntimes = 0 # or frequency/mode #self.ntotal = 0 self.nelements = 0 # result specific if not is_sort1: raise NotImplementedError('SORT2') @property def is_real(self) -> bool: return False @property def is_complex(self) -> bool: return True @property def nnodes_per_element(self) -> int: return 1 def _reset_indices(self) -> None: self.itotal = 0 self.ielement = 0 #def get_headers(self): #headers = ['axial', 'torque'] #return headers
[docs] def build(self): """sizes the vectorized attributes of the ComplexSpringDamperArray""" #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, cfdtype = get_complex_times_dtype(self.nonlinear_factor, self.size) self._times = zeros(self.ntimes, dtype=dtype) self.element = zeros(self.nelements, dtype=idtype) #[spring_stress] self.data = zeros((self.ntimes, self.ntotal, 1), dtype=cfdtype)
[docs] def build_dataframe(self): """creates a pandas dataframe""" headers = self.get_headers() 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)
def __eq__(self, table): # pragma: no cover assert self.is_sort1 == table.is_sort1 self._eq_header(table) 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()) i = 0 for itime in range(self.ntimes): for ielem, eid in enumerate(self.element): t1 = self.data[itime, ielem, :] t2 = table.data[itime, ielem, :] if not np.array_equal(t1, t2): msg += '%s (%s, %s) (%s, %s)\n' % ( eid, t1.real, t1.imag, t2.real, t2.imag) i += 1 if i > 10: print(msg) raise ValueError(msg) #print(msg) if i > 0: raise ValueError(msg) return True def add_sort1(self, dt, eid, 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, 0] = 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', ] nelements = self.nelements ntimes = self.ntimes #ntotal = self.ntotal msg = [] if self.nonlinear_factor not in (None, np.nan): # transient msg.append(' type=%s ntimes=%i nelements=%i; table_name=%r\n' % ( self.__class__.__name__, ntimes, nelements, self.table_name)) ntimes_word = 'ntimes' else: msg.append(' type=%s nelements=%i; table_name=%r\n' % ( self.__class__.__name__, nelements, self.table_name)) 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' element.shape = {self.element.shape}\n') msg.append(f' data.shape = {self.data.shape}\n') #msg.append(' element type: %s\n' % self.element_type) msg.append(' element name: %s\n' % self.element_name) msg += self.get_data_code() return msg
[docs] def get_f06_header(self, is_mag_phase=True, is_sort1=True): # 11-CELAS1, 12-CELAS2, 13-CELAS3, 14-CELAS4 #' FREQUENCY STRESS FREQUENCY STRESS' if self.element_type == 11: msg = [' C O M P L E X S T R E S S E S I N S C A L A R S P R I N G S ( C E L A S 1 )\n'] elif self.element_type == 12: msg = [' C O M P L E X S T R E S S E S I N S C A L A R S P R I N G S ( C E L A S 2 )\n'] elif self.element_type == 13: msg = [' C O M P L E X S T R E S S E S I N S C A L A R S P R I N G S ( C E L A S 3 )\n'] elif self.element_type == 14: msg = [' C O M P L E X S T R E S S E S I N S C A L A R S P R I N G S ( C E L A S 4 )\n'] #elif self.element_type == 20: # CDAMP1 #msg = [' C O M P L E X F O R C E S I N S C A L A R D A M P E R S ( C D A M P 1 )\n'] #elif self.element_type == 21: # CDAMP2 #msg = [' C O M P L E X F O R C E S I N S C A L A R D A M P E R S ( C D A M P 2 )\n'] else: raise NotImplementedError('element_name=%s element_type=%s' % (self.element_name, self.element_type)) if is_mag_phase: msg += [' (MAGNITUDE/PHASE)\n \n'] else: msg += [' (REAL/IMAGINARY)\n \n'] if is_sort1: msg += [ ' ELEMENT ELEMENT\n' ' ID. STRESS ID. STRESS\n' ] #' 14 0.0 / 0.0 0.0 / 0.0' else: msg += [' FREQUENCY STRESS FREQUENCY STRESS\n'] 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 = [] msg_temp = self.get_f06_header(is_mag_phase=is_mag_phase, is_sort1=is_sort1) ntimes = self.data.shape[0] eids = self.element #is_odd = False #nwrite = len(eids) #if len(eids) % 2 == 1: #nwrite -= 1 #is_odd = True #print('len(eids)=%s nwrite=%s is_odd=%s' % (len(eids), nwrite, is_odd)) for itime in range(ntimes): dt = self._times[itime] # TODO: rename this... 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))) spring_force = self.data[itime, :, 0] for eid, spring_forcei in zip(eids, spring_force): [rspring, ispring] = write_imag_floats_13e([spring_forcei], is_mag_phase) #ELEMENT AXIAL TORSIONAL #ID. STRESS STRESS #14 0.0 / 0.0 0.0 / 0.0 f06_file.write(' %8i %-13s / %-13s\n' % (eid, rspring, ispring)) 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 #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 #print('ntotal=%s' % (ntotal)) #assert ntotal == 193, ntotal if self.is_sort1: struct1 = Struct(endian + b'i2f') else: raise NotImplementedError('SORT2') op2_ascii.write('%s-nelements=%i\n' % (self.element_name, nelements)) for itime in range(self.ntimes): self._write_table_3(op2_file, op2_ascii, new_result, itable, itime) # record 4 itable -= 1 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') from pyNastran.op2.op2_interface.utils import to_mag_phase stress = self.data[itime, :, 0] reals, imags = to_mag_phase(stress, is_mag_phase) for eid, stress_real, stress_imag in zip(eids_device, reals, imags): data = [eid, stress_real, stress_imag] op2_ascii.write(f' eid={eid} stress={[stress_real, stress_imag]}\n') 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
[docs]class ComplexSpringStressArray(ComplexSpringDamperArray, StressObject): def __init__(self, data_code, is_sort1, isubcase, dt): ComplexSpringDamperArray.__init__(self, data_code, is_sort1, isubcase, dt) StressObject.__init__(self, data_code, isubcase)
[docs] def get_headers(self) -> List[str]: headers = ['spring_stress'] return headers
[docs]class ComplexSpringStrainArray(ComplexSpringDamperArray, StrainObject): def __init__(self, data_code, is_sort1, isubcase, dt): ComplexSpringDamperArray.__init__(self, data_code, is_sort1, isubcase, dt) StrainObject.__init__(self, data_code, isubcase)
[docs] def get_headers(self) -> List[str]: headers = ['spring_strain'] return headers