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[Jan Stránský <question653503@xxxxxxxxxxxxxxxxxxxxx>]

Question #653503 on Yade changed:
https://answers.launchpad.net/yade/+question/653503

Jan Stránský proposed the following answer:
in binary representation:
1 means stress controlled direction
0 means strain controlled direction

you can use this functions to play with:
##########
def array2mask(xx,yy,zz,yz,zx,xy):
	ret = 0
	ret |= xx << 0
	ret |= yy << 1
	ret |= zz << 2
	ret |= yz << 3
	ret |= zx << 4
	ret |= xy << 5
	return ret

def pprint(v):
	print "0b{:06b}".format(v)
pprint(array2mask(0,0,0, 0,0,0)) # everything strain controlled
pprint(array2mask(1,1,1, 1,1,1)) # everythin stress controlled
pprint(array2mask(0,1,1, 1,1,1)) # xx strain controled, otherwise stress controled. With goal=(v,0,0, 0,0,0) = uniaxial strain with all stress 0 except axial xx stress
pprint(array2mask(0,0,1, 0,1,0)) # something random
##########

label.stressMask=0b000011:
stress controlled: xx,yy
strain controlled: zz,yz,zx,xy

label.stressMask=0b100001
stress controlled: xx, xy
strain controlled: yy,zz,yz,zx

cheers
Jan

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