A rate independent approach to crystal plasticity with a power law

The ambiguity problem in rate independent multisurface theory of plastic flow in crystals can be solved by usage of a rate dependent theory. Here, a proposal presented similarly by Gambin and Barlat [Int. J. Plast. 13 (1997) 75] is used that is rate independent but unique without need for a generalized inversion technique. Some other useful properties can be shown. Applications to f.c.c. single and polycrystals are demonstrated.