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DAMASK_EICMD
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1. add the option 'all', fit all criteria automatically 

2. generate equivalent stress automatically for advanced criteria.
This commit is contained in:
Haiming Zhang 2015-04-25 17:08:38 +00:00
parent a55b0c54c6
commit 1b9595d012
1 changed files with 91 additions and 44 deletions
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135
processing/misc/yieldSurface.py
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@ -11,6 +11,43 @@ from damask.util import leastsqBound
scriptID = string.replace('$Id$','\n','\\n')
scriptName = scriptID.split()[1][:-3]
def runFit(exponent, eqStress, dimension, criterion):
global s, threads, myFit
global fitResults, fitErrors, fitResidual, stressAll, strainAll
global N_simulations, Guess, dDim, numParas
fitResults = []; fitErrors = []; fitResidual = []; Guess = []; threads=[]
dDim = dimension - 3
numParas = len(fitCriteria[criterion]['bound'][dDim])
nExpo = fitCriteria[criterion]['nExpo']
if exponent > 0.0:
numParas = numParas-nExpo # User defines the exponents
fitCriteria[criterion]['bound'][dDim] = fitCriteria[criterion]['bound'][dDim][:numParas]
for i in xrange(numParas):
temp = fitCriteria[criterion]['bound'][dDim][i]
if fitCriteria[criterion]['bound'][dDim][i] == (None,None): Guess.append(1.0)
else:
g = (temp[0]+temp[1])/2.0
if g == 0: g = temp[1]*0.5
Guess.append(g)
N_simulations=0
s=threading.Semaphore(1)
myLoad = Loadcase(options.load[0],options.load[1],options.load[2],
nSet = 10, dimension = dimension, vegter = options.vegter)
stressAll= [np.zeros(0,'d').reshape(0,0) for i in xrange(int(options.yieldValue[2]))]
strainAll= [np.zeros(0,'d').reshape(0,0) for i in xrange(int(options.yieldValue[2]))]
myFit = Criterion(exponent,eqStress, dimension, criterion)
for i in range(options.threads):
threads.append(myThread(i))
threads[i].start()
for i in range(options.threads):
threads[i].join()
print fitResidual
def execute(cmd,streamIn=None,wd='./'):
'''
executes a command in given directory and returns stdout and stderr for optional stdin
@ -44,8 +81,8 @@ def principalStress(p):
I1s3I2= (I1**2 - 3.0*I2)**0.5
numer = 2.0*I1**3 - 9.0*I1*I2 + 27.0*I3
denom = 0.5*I1s3I2**(-3.0)
cs = numer*denom
denom = 2.0*I1s3I2**3
cs = numer/denom
phi = np.arccos(cs)/3.0
t1 = I1/3.0; t2 = 2.0/3.0*I1s3I2
@ -59,11 +96,11 @@ def principalStrs_Der(p, (s1, s2, s3, s4, s5, s6), dim, Karafillis=False):
I1,I2,I3 = invariant(p)
third = 1.0/3.0
I1s3I2= (I1**2 - 3.0*I2)**0.5
numer = 2.0*I1**3 - 9.0*I1*I2 + 27.0*I3
denom = 0.5*I1s3I2**(-3.0)
cs = numer*denom
phi = np.arccos(cs)*third
I1s3I2= np.sqrt(I1**2 - 3.0*I2)
numer, denom = 2.0*I1**3 - 9.0*I1*I2 + 27.0*I3, 2.0*I1s3I2**3
cs = numer/denom
phi = np.arccos(cs)/3.0
dphidcs = -third/np.sqrt(1.0 - cs**2)
dcsddenom = 0.5*numer*(-1.5)*I1s3I2**(-5.0)
@ -820,6 +857,7 @@ def KarafillisBoyce(eqStress, paras, sigmas, mFix, criteria, dim, Jac=False):
fitCriteria = {
'tresca' :{'func' : Tresca,
'nExpo': 0,'err':np.inf,
'dimen': 3,
'bound': [ [(None,None)] ],
'paras': [ 'sigma0' ],
'text' : '\nCoefficient of Tresca criterion: ',
@ -827,6 +865,7 @@ fitCriteria = {
},
'vonmises' :{'func' : Hosford,
'nExpo': 0,'err':np.inf,
'dimen': 3,
'bound': [ [(None,None)] ],
'paras': [ 'sigma0' ],
'text' : '\nCoefficient of Huber-Mises-Hencky criterion: ',
@ -834,6 +873,7 @@ fitCriteria = {
},
'hershey' :{'func' : Hosford,
'nExpo': 1,'err':np.inf,
'dimen': 3,
'bound': [ [(None,None)]+[(1.0,8.0)] ],
'paras': [ 'sigma0, a' ],
'text' : '\nCoefficients of Hershey criterion: ',
@ -841,6 +881,7 @@ fitCriteria = {
},
'ghosford' :{'func' : Hosford,
'nExpo': 1,'err':np.inf,
'dimen': 3,
'bound': [ [(0.0,2.0)]*3+[(1.0,8.0)] ],
'paras': [ 'F, G, H, a' ],
'text' : '\nCoefficients of Hosford criterion: ',
@ -848,6 +889,7 @@ fitCriteria = {
},
'hill1948' :{'func' : Hill1948,
'nExpo': 0,'err':np.inf,
'dimen': 3,
'bound': [ [(None,None)]*6, [(None,None)]*4 ],
'paras': [ 'F, G, H, L, M, N', 'F, G, H, N'],
'text' : '\nCoefficients of Hill1948 criterion: ',
@ -855,6 +897,7 @@ fitCriteria = {
},
'hill1979' :{'func' : Hill1979,
'nExpo': 1,'err':np.inf,
'dimen': 3,
'bound': [ [(-2.0,2.0)]*6+[(1.0,8.0)] ],
'paras': [ 'f,g,h,a,b,c,m' ],
'text' : '\nCoefficients of Hill1979 criterion: ' ,
@ -862,6 +905,7 @@ fitCriteria = {
},
'drucker' :{'func' : Drucker,
'nExpo': 0,'err':np.inf,
'dimen': 3,
'bound': [ [(None,None)]+[(-3.375, 2.25)] ],
'paras': [ 'sigma0, C_D' ],
'text' : '\nCoefficients of Drucker criterion: ',
@ -869,6 +913,7 @@ fitCriteria = {
},
'gdrucker' :{'func' : Drucker,
'nExpo': 1,'err':np.inf,
'dimen': 3,
'bound': [ [(None,None)]+[(-3.375, 2.25)]+[(1.0,8.0)] ],
'paras': [ 'sigma0, C_D, p' ],
'text' : '\nCoefficients of general Drucker criterion: ',
@ -876,6 +921,7 @@ fitCriteria = {
},
'barlat1989' :{'func' : Barlat1989,
'nExpo': 1,'err':np.inf,
'dimen': 2,
'bound': [ [(-3.0,3.0)]*4+[(1.0,8.0)] ],
'paras': [ 'a,c,h,f, m' ],
'text' : '\nCoefficients of isotropic Barlat 1989 criterion: ',
@ -883,6 +929,7 @@ fitCriteria = {
},
'barlat1991' :{'func' : Barlat1991,
'nExpo': 1,'err':np.inf,
'dimen': 3,
'bound': [ [(-2,2)]*6+[(1.0,8.0)], [(-2,2)]*4+[(1.0,8.0)] ],
'paras': ['a, b, c, f, g, h, m', 'a, b, c, f, m'],
'text' : '\nCoefficients of anisotropic Barlat 1991 criterion: ',
@ -890,6 +937,7 @@ fitCriteria = {
},
'bbc2000' :{'func' : BBC2000,
'nExpo': 1,'err':np.inf,
'dimen': 2,
'bound': [ [(None,None)]*7+[(1.0,8.0)] ], #[(None,None)]*6+[(0.0,1.0)]+[(1.0,9.0)],
'paras': [ 'd,e,f,g, b,c,a, k' ],
'text' : '\nCoefficients of Banabic-Balan-Comsa 2000 criterion: ',
@ -897,6 +945,7 @@ fitCriteria = {
},
'bbc2003' :{'func' : BBC2003,
'nExpo': 1,'err':np.inf,
'dimen': 2,
'bound': [ [(None,None)]*8+[(1.0,8.0)] ], #[(None,None)]*7+[(0.0,1.0)]+[(1.0,9.0)],
'paras': [ 'M, N, P, Q, R, S, T, a, k' ],
'text' : '\nCoefficients of Banabic-Balan-Comsa 2003 criterion: ',
@ -904,6 +953,7 @@ fitCriteria = {
},
'bbc2005' :{'func' : BBC2005,
'nExpo': 1,'err':np.inf,
'dimen': 2,
'bound': [ [(None,None)]*8+[(1.0,8.0)] ], #[(None,None)]*6+[(0.0,1.0)]*2+[(1.0,9.0)],
'paras': [ 'L ,M, N, P, Q, R, a, b, k' ],
'text' : '\nCoefficients of Banabic-Balan-Comsa 2005 criterion: ',
@ -911,6 +961,7 @@ fitCriteria = {
},
'cazacu' :{'func' : Cazacu_Barlat,
'nExpo': 0,'err':np.inf,
'dimen': 3,
'bound': [ [(None,None)]*16+[(-2.5,2.5)]+[(None,None)] ],
'paras': [ 'a1,a2,a3,a4,a5,a6; b1,b2,b3,b4,b5,b6,b7,b8,b9,b10,b11; c','a1,a2,a3,a6; b1,b2,b3,b4,b5,b10; c'],
'text' : '\nCoefficients of Cazacu Barlat yield criterion: ',
@ -918,6 +969,7 @@ fitCriteria = {
},
'yld2000' :{'func' : Yld2000,
'nExpo': 1,'err':np.inf,
'dimen': 2,
'bound': [ [(None,None)]*8+[(1.0,8.0)] ],
'paras': [ 'a1,a2,a7,a3,a4,a5,a6,a8,m' ],
'text' : '\nCoefficients of Yld2000-2D yield criterion: ',
@ -925,6 +977,7 @@ fitCriteria = {
},
'yld200418p' :{'func' : Yld200418p,
'nExpo': 1,'err':np.inf,
'dimen': 3,
'bound': [ [(None,None)]*18+[(1.0,8.0)], [(None,None)]*14+[(1.0,8.0)] ],
'paras': [ 'c12,c21,c23,c32,c31,c13,c44,c55,c66,d12,d21,d23,d32,d31,d13,d44,d55,d66,m', \
'c12,c21,c23,c32,c31,c13,c44,d12,d21,d23,d32,d31,d13,d44,m' ],
@ -933,12 +986,14 @@ fitCriteria = {
},
'karafillis' :{'func' : KarafillisBoyce,
'nExpo': 3,'err':np.inf,
'dimen': 3,
'bound': [ [(None,None)]*12+[(0.0,1.0)]+[(1.0,8.0)]*3, [(None,None)]*8+[(0.0,1.0)]+[(1.0,8.0)]*3],
'paras': [ 'c11,c12,c13,c14,c15,c16,c21,c22,c23,c24,c25,c26,alpha,b1,b2,a', \
'c11,c12,c13,c14,c21,c22,c23,c24,alpha,b1,b2,a' ],
'text' : '\nCoefficients of Karafillis-Boyce yield criterion: ',
'error': 'The standard deviation errors are: '
}
},
'all' : 'fit all the criteria'
}
thresholdParameter = ['totalshear','equivalentStrain']
@ -1248,8 +1303,8 @@ def doSim(delay,thread):
try:
for i in xrange(int(options.yieldValue[2])):
if validity[i]:
a = (yieldStress[0][2]/unitGPa)**2 + (yieldStress[0][4]/unitGPa)**2 + (yieldStress[0][5]/unitGPa)**2
stressAll[i]=np.append(stressAll[i], yieldStress[i]/unitGPa)
a = (yieldStress[0][2]/stressUnit)**2 + (yieldStress[0][4]/stressUnit)**2 + (yieldStress[0][5]/stressUnit)**2
stressAll[i]=np.append(stressAll[i], yieldStress[i]/stressUnit)
strainAll[i]=np.append(strainAll[i], deformationRate[i])
myFit.fit(stressAll[i].reshape(len(stressAll[i])//6,6).transpose())
except Exception as detail:
@ -1345,51 +1400,43 @@ if options.yieldValue[2] != int(options.yieldValue[2]):
parser.error('count must be an integer')
if options.dimension not in [2,3]:
parser.error('Dimension is wrong, should be 2(plane stress state) or 3(general stress state)')
if options.criterion not in ['tresca', 'vonmises', 'hershey','drucker', 'gdrucker', 'hill1948']:
if options.eqStress == None:
parser.error("The equivalent stress is indispensable for the yield criterion '"+ options.criterion+"'")
#if options.criterion not in ['tresca', 'vonmises', 'hershey','drucker', 'gdrucker', 'hill1948']:
# if options.eqStress == None:
# parser.error("The equivalent stress is indispensable for the yield criterion '"+ options.criterion+"'")
if not os.path.isfile('numerics.config'):
print('numerics.config file not found')
if not os.path.isfile('material.config'):
print('material.config file not found')
dDim = options.dimension - 3
numParas = len(fitCriteria[options.criterion]['bound'][dDim])
nExpo = fitCriteria[options.criterion]['nExpo']
Guess = []
if options.exponent > 0.0:
numParas = numParas-nExpo # User defines the exponents
fitCriteria[options.criterion]['bound'][dDim] = fitCriteria[options.criterion]['bound'][dDim][:numParas]
for i in xrange(numParas):
temp = fitCriteria[options.criterion]['bound'][dDim][i]
if fitCriteria[options.criterion]['bound'][dDim][i] == (None,None): Guess.append(1.0)
else:
g = (temp[0]+temp[1])/2.0
if g == 0: g = temp[1]*0.5
Guess.append(g)
if options.vegter is True:
options.dimension = 2
if options.criterion == 'hill1948': stressUnit = 1.0e9
else : stressUnit = 1.0e6
N_simulations=0
s=threading.Semaphore(1)
myLoad = Loadcase(options.load[0],options.load[1],options.load[2],
nSet = 10, dimension = options.dimension, vegter = options.vegter)
stressAll= [np.zeros(0,'d').reshape(0,0) for i in xrange(int(options.yieldValue[2]))]
strainAll= [np.zeros(0,'d').reshape(0,0) for i in xrange(int(options.yieldValue[2]))]
fitResults = []; fitErrors = []; fitResidual = []; threads=[]
myFit = Criterion(options.exponent,options.eqStress, options.dimension, options.criterion)
for i in range(options.threads):
threads.append(myThread(i))
threads[i].start()
for i in range(options.threads):
threads[i].join()
fit_allResults = {}
if options.criterion == 'all':
noExpoList = ['tresca', 'vonmises', 'hill1948', 'drucker']
for criter in noExpoList:
run = runFit(options.exponent, 0.0, fitCriteria[criter]['dimen'], criter)
fit_allResults[criter] = {'results': fitResults, 'errors': fitErrors, 'residual': fitResidual}
for criter in [x for x in fitCriteria.keys() if x not in noExpoList+['vegter','all'] ]:
if options.eqStress == None:
# the user do not provide the equivalent stress, the equivalent stress will be fitted by von Mises
eqStress = fit_allResults['vonmises']['results'][-1]
run = runFit(options.exponent, eqStress, fitCriteria[criter]['dimen'], criter)
fit_allResults[criter] = {'results': fitResults, 'errors': fitErrors, 'residual': fitResidual}
else:
criter = options.criterion
if fitCriteria[criter]['nExpo'] == 0:
run = runFit(options.exponent, 0.0, fitCriteria[criter]['dimen'], criter)
else:
if options.eqStress == None:
# the user do not provide the equivalent stress, the equivalent stress will be fitted by von Mises
run = runFit(options.exponent, 0.0, fitCriteria[criter]['dimen'], 'vonmises')
eqStress = fitResults[-1]
run = runFit(options.exponent, eqStress, fitCriteria[criter]['dimen'], criter)
fit_allResults[criter] = {'results': fitResults, 'errors': fitErrors, 'residual': fitResidual}
print 'Finished fitting to yield criteria'