中文摘要：

为了研究高应变率冲击压缩荷载作用下，岩石类材料的非线弹性力学特性，建立了描述SHPB试验中应力波在考虑损伤及应变率强化效应的非线弹性岩石类材料中传播的波动方程．将混合遗传算法与有限差分法数值计算方法相结合，建立了数值分析程序，在花岗岩SHPB试验研究基础上，模拟了SHPB试验中从应力波进入入射杆到试件破碎的整个加载过程中应力波在入射杆、透射杆以及岩石类试件中的传播过程，进而求得试件上的应力与应变．由理论计算的应力应变曲线与试验曲线对比分析，验证了应力波在考虑损伤的非线弹性材料中的波动方程及数值分析方法的适用性和可靠性．

英文摘要：

In order to study the viscoelastoplastic characteristics of rock-like materials under high-strain rate loading, firstly, control equation of the stress wave propagating in the non linear elastic rock material with strain rate strengthening and damage in Split Hopkinson Pressure Bar （SHPB） tests is established. Then based on the granite test, combining hybrid genetic algorithm with the finite difference method of numerical analysis, the stress wave propagation in two compressive bar and specimen is numerically analyzed in the whole loading process from the incident wave into the incident bar to specimen broken, and then strain and stress of specimen are obtained. Finally, through the comparison of calculation curve and experimental curve, the reliability of the stress wave equations and numerical analysis method are validated.