基于连续损伤力学，对于子弹冲击多层板靶的变形─损伤过程以三维数值模拟作了理论研讨，给出了必要的基本方程．板靶具有材料各向异性和结构非均匀性；冲击引起的微损伤是各向异性的，造成材料的非线性；冲击造成的局部大变形，构成几何非线性．给出了计算实例；计算结果说明了典型的应变波在靶中的传播． Based on the continuous damage mechanics, the deformation-damage process of bullet impact multi-layer plate target is studied theoretically by three-dimensional numerical simulation, and the necessary basic equations are given. Plate targets have material anisotropy and structural inhomogeneity; impact-induced micro-damage is anisotropic, resulting in non-linearity of the material; large local deformation due to impact, resulting in geometric nonlinearities. A calculation example is given. The calculation results show the propagation of a typical strain wave in a target.