Abstract: The geometric frame of finite deformation and Bodner-Parton constitutive equations are introduced into the finite element analysis of hypervelocity impact. The physical parameters of materials are determined by comparison of the one-dimensional calculations with the experimental results. From the comparison of the calculations with the experiments of a tungsten alloy projectile impacting a semi-infinite plate of armor steel, it can be seen that the B-P constitutive equations and the geometric non-linearity introduced by the authors can be used to analysis of hypervelocity impact.