实验研究了用不同的激光能量,对LD-31锻铝合金靶板进行激光冲击而引起的动态损伤,并用ABAQUS软件进行了有限元仿真分析。实验和仿真结果均表明:材料从无破坏到破坏,是空穴、微裂纹成核、长大、聚合的结果。材料的损伤及长大是时间和外载的函数,因此,不能用单一的应力或应变率表征动态损伤过程,而必须考虑损伤累积过程。 The dynamic damage caused by laser shock on LD-31 wrought aluminum alloy target with different laser energy was experimentally studied, and the finite element simulation was carried out by using ABAQUS software. Experiments and simulation results show that the material from no damage to damage, is the hole, micro-cracks nucleation, growth, the result of polymerization. Material damage and growth is a function of time and load. Therefore, the dynamic damage process can not be characterized by a single stress or strain rate, and the damage accumulation process must be considered.