反向起爆模型下的冲击波加载  

Shock wave loading of reverse detonation model

作　　者：张柱[1] 晋艳娟[1] 

机构地区：[1]太原科技大学应用科学学院,山西太原030024

出　　处：《爆炸与冲击》2014年第2期223-228,共6页Explosion and Shock Waves

基　　金：国家自然科学基金项目(11032002;11172045);太原科技大学博士启动基金项目(20132012)~~

摘　　要：为了实现对大尺寸材料试件的动态加载,得到与轻气炮加载应力波相同的爆炸加载冲击波,基于叠加原理,提出了利用炸药反向起爆模型完成对可压缩固体材料的冲击波加载。通过联立爆炸产物和可压缩流体的速度-压力曲线以及综合考虑炸药和材料试件各自由边所受稀疏波干扰的情况,从理论上给出了冲击波压力和冲击波加载平台宽度的计算方法。并结合数值模拟,对理论分析结果进行了验证,两者基本一致。To achieve the dynamic loadings on the large-sized specimens by the explosive shock waves equivalent to the stress wave obtained by a light gas gun, based on the principle of superposition, the reverse detonation model was introduced to accomplish the shock wave loading on the compressible solid materials. The interferences were comprehensively considered for each free edge of the explosives and the material specimens by the rarefaction waves. By integrating the velocity-pressure curves of the explosion products and the compressible fluids, the calculation methods were theoretically proposed for the shock pressure and the shock wave loading platform width, respectively. And the theoretical analysis results were verified by combining the numerical simulation. They are consistent with each other.

关 键 词：爆炸力学 反向起爆 冲击波 大尺寸材料试件 压力 平台宽度 

分 类 号：O389[理学—流体力学]