The initiation and growth of, and the interaction among, adiabatic shear bands in simple and dipolar materials

摘要: Abstract The problem of simple shearing a block (nonpolar) and dipolar thermoviscoplastic materials is studied with the objectives exploring initiation growth of, interaction among, adiabatic shear bands. A band assumed to have formed if addition perturbation homogeneous fields just before peak stress reached results in localization strain. effect adding perturbations different sizes same size but at locations slab investigated. It shown that materials, two bands coalesce distance between them small grow independently, although slower rate, large. However, for even when time their 20 times material characteristic length.