Niestowarzyszone prawo płynięcia anizotropowych plastycznie stopów aluminium

The application of non-associated flow rule for plastic flow of anisotropic aluminium alloys sheets PA2 and PA4 is presented. The anisotropic yield criterion proposed by Ota, Shindo and Fukuoka was used as a plastic potential. The method of calculation of constants to obtain the best fit with experimental results of plastic strain increment ratios is described.