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采用细观分析方法导出了新的延性动态损伤模型，模型中包括了率效应、惯性效应、孔洞表面能变化和材料硬化对孔洞演化的影响。模型数值分析得出的结论：（l）延性孔洞的动态增长对率效应十分敏感；（2）惯性效应在高加载率条件下对孔洞增长有明显的影响。进行了Lc4超硬铝层裂实验。利用本文模型对层裂过程进行了数值模拟，计算结果与实验吻合较好。
A new model of ductile dynamic damage is derived by using the method of meso-scale analysis. The model includes the rate effect, inertial effect, the change of surface energy of the hole and the effect of material hardening on the hole evolution. Numerical analysis of the model shows the following conclusions: (1) The dynamic growth of ductile pores is very sensitive to the rate effect; (2) The inertial effect has a significant effect on the hole growth at high loading rate. Lc4 superhard aluminum layer splitting experiments were carried out. The numerical simulation of the delamination process is carried out by using the model in this paper. The calculated result is in good agreement with the experiment.