Simulation of the Deformation Behavior and Spall Failure of an Aluminum Alloy under Shock-Wave Loading

This paper reports on the modeling of the behavior of a 5056 aluminum alloy plate target subjected to shock wave loading using the structural-statistical model that links multiscale defect kinetics, relaxation properties (plasticity) and the kinetics of damage-failure transition related to the generation of multiscale collective modes of defects (solitary waves in a defect ensemble in the case of plastic relaxation) and blow-up collective modes as a precursor of damage-failure transition. The important part of the numerical study is the identification of material parameters using the data of quasi- static and dynamic tests for aluminum alloy samples and the verification of the model and the identification procedure in the course of the simulation of plate impact loading of the aluminum alloy target.