DAMASK_EICMD/processing/post/addPK2.py

78 lines
4.1 KiB
Python
Executable File

#!/usr/bin/env python
# -*- coding: UTF-8 no BOM -*-
import os,sys,string
import numpy as np
from collections import defaultdict
from optparse import OptionParser
import damask
scriptID = string.replace('$Id$','\n','\\n')
scriptName = os.path.splitext(scriptID.split()[1])[0]
# --------------------------------------------------------------------
# MAIN
# --------------------------------------------------------------------
parser = OptionParser(option_class=damask.extendableOption, usage='%prog options [file[s]]', description = """
Add column(s) containing Second Piola--Kirchhoff stress based on given column(s) of deformation gradient and first Piola--Kirchhoff stress.
""", version = scriptID)
parser.add_option('-f','--defgrad', dest='defgrad', metavar='string',
help='heading of columns containing deformation gradient [%default]')
parser.add_option('-p','--stress', dest='stress', metavar='string',
help='heading of columns containing first Piola--Kirchhoff stress [%default]')
parser.set_defaults(defgrad = 'f')
parser.set_defaults(stress = 'p')
(options,filenames) = parser.parse_args()
# ------------------------------------------ setup file handles ------------------------------------
files = []
if filenames == []:
files.append({'name':'STDIN', 'input':sys.stdin, 'output':sys.stdout, 'croak':sys.stderr})
else:
for name in filenames:
if os.path.exists(name):
files.append({'name':name, 'input':open(name), 'output':open(name+'_tmp','w'), 'croak':sys.stderr})
# ------------------------------------------ loop over input files ---------------------------------
for file in files:
if file['name'] != 'STDIN': file['croak'].write('\033[1m'+scriptName+'\033[0m: '+file['name']+'\n')
else: file['croak'].write('\033[1m'+scriptName+'\033[0m\n')
table = damask.ASCIItable(file['input'],file['output'],False) # make unbuffered ASCII_table
table.head_read() # read ASCII header info
table.info_append(scriptID + '\t' + ' '.join(sys.argv[1:]))
# --------------- figure out columns to process ---------------------------------------------------
missingColumns = False
column={ 'defgrad': table.labels.index('1_'+options.defgrad),
'stress': table.labels.index('1_'+options.stress)}
for key in column:
if column[key]<1:
file['croak'].write('column %s not found...\n'%key)
missingColumns=True
if missingColumns: continue
# ------------------------------------------ assemble header --------------------------------------
table.labels_append(['%i_S'%(i+1) for i in xrange(9)]) # extend ASCII header with new labels
table.head_write()
# ------------------------------------------ process data ------------------------------------------
outputAlive = True
while outputAlive and table.data_read(): # read next data line of ASCII table
F = np.array(map(float,table.data[column['defgrad']:column['defgrad']+9]),'d').reshape(3,3)
P = np.array(map(float,table.data[column['stress'] :column['stress']+9]),'d').reshape(3,3)
table.data_append(list(np.dot(np.linalg.inv(F),P).reshape(9))) # [S] =[P].[F-1]
outputAlive = table.data_write() # output processed line
# ------------------------------------------ output result -----------------------------------------
outputAlive and table.output_flush() # just in case of buffered ASCII table
table.input_close() # close input ASCII table (works for stdin)
table.output_close() # close output ASCII table (works for stdout)
if file['name'] != 'STDIN':
os.rename(file['name']+'_tmp',file['name']) # overwrite old one with tmp new