Modeling of strain localization and spalling in shock-loaded metal mesoscopic volumes

Numerical modeling methods are used to study plastic deformation and destru ction of mesoscopic volumes of polycrystalline materials under shock wave l oading. Calculations explicitly take into account inhomogeneity of the mate rial structure by ascribing different mechanical properties to various indi vidual grains. Formation of localized strain bands in a mesoscopic volume i n thick-walled copper cylinders subjected to high-rate compression is model ed and the results of this modeling are discussed. The crack development pr ocess in the mesoscopic volume of a polycrystalline material experiencing s pallation is simulated.