Numerical analysis of shear-band bifurcation

A numerical analysis of bifurcation in shear band pattern is presented to help understand the distributions of the velocity variation in the shear band. Comparison with the results of analytic method indicates that: (1) the critical strain is irrelevant to the relative width of the shear band; (2) the variations along the direction normal to the band have indeed the controlling effect whilst the effect of variations along the tangential direction is negligible. The project is supported by the National Natural Science Foundation of China.