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corrected name of U,V; fixed Mises_strain factor from 3/2 to 2/3;

This commit is contained in:
Philip Eisenlohr 2019-10-23 15:03:24 +02:00
parent 2d08eb68b1
commit 894b646283
1 changed files with 3 additions and 3 deletions
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6
python/damask/mechanics.py
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@ -33,7 +33,7 @@ def strain_tensor(F,t,m):
F : numpy.array of shape (x,3,3) or (3,3)
Deformation gradient.
t : {‘V’, ‘U’}
Type of the polar decomposition, ‘V’ for right stretch tensor and ‘U’ for left stretch tensor.
Type of the polar decomposition, ‘V’ for left stretch tensor and ‘U’ for right stretch tensor.
m : float
Order of the strain.
@ -116,8 +116,8 @@ def Mises_strain(epsilon):
"""
s = deviatoric_part(epsilon)
return np.sqrt(3.0/2.0*(np.sum(s**2.0))) if np.shape(epsilon) == (3,3) else \
np.sqrt(3.0/2.0*np.einsum('ijk->i',s**2.0))
return np.sqrt(2.0/3.0*(np.sum(s**2.0))) if np.shape(epsilon) == (3,3) else \
np.sqrt(2.0/3.0*np.einsum('ijk->i',s**2.0))
def symmetric(x):