Effect of the choice of a plasticity condition on the stress state of an anisotropic target under impact loading
In this paper impact loading of an anisotropic target is numerically simulated using aluminum alloys with initially anisotropic elastic and plastic properties under various plasticity conditions. Elastoplastic deformation of the anisotropic target is simulated by a 3D finite element method based on the flow theory. The effect of the choice of a plasticity condition on calculation results for the stress-strain state of the anisotropic target is shown to grow as the loading rate increases from 300 to 600 m/s.