实验研究了重复频率脉冲ＹＡＧ激光对金属壳密封装药点火以及由此造成的对结构破坏的机理和模式，得到了金属壳内ＲＤＸ、ＰＥＴＮ炸药热爆炸或热爆燃所需激光作用时间与激光功率密度关系。初步的数值模拟结果表明，炸药热点火所需激光作用时间与激光强度、光斑尺寸有明显的依赖关系。 Experiments were conducted to study the mechanism and mode of ignition caused by the repetitive-frequency pulse YAG laser on the metal shell encapsulated charge and the mechanism and mode of damage to the structure. The laser action time and laser power required for thermal explosion or deflagration of RDX and PETN in metal shell were obtained. Density relationship. The preliminary numerical simulation results show that the time required for the laser to ignite the explosive is obviously dependent on the laser intensity and spot size.