长方体单腔室空腔环境内爆炸效应的实验研究  

Experimental study on explosion effect in a closed single rectangular cavity

作　　者：胡洋[1] 朱建芳[1] 朱锴[1] 

机构地区：[1]华北科技学院安全工程学院矿井灾害防治重点实验室,北京101601

出　　处：《爆炸与冲击》2016年第3期340-346,共7页Explosion and Shock Waves

基　　金：华北科技学院创新团队项目(3142015021;3142014124);爆炸科学与技术国家重点实验室开放基金项目(KFJJ15-15M)

摘　　要：为了获得在典型空腔内发生爆炸后,结构壁面上爆炸载荷的分布规律和空腔结构的破坏形式,以国防工事和人防工事的等级设计规范为依据,设计了长方体单腔室空腔模型,并对该模型进行了药量逐渐递增直至可使结构破坏的内爆炸实验。用压力传感器和加速度传感器分别记录了单腔室壁面上爆炸载荷的压力时程曲线和结构壁面振动的加速度时程曲线,分析了壁面上爆炸载荷的分布规律以及模型结构的破坏形式,并将首个峰值的实测数据与理论计算和数值模拟结果进行了对比,探讨了3种研究方法产生误差的原因。According to the design specifications of national defense works and human defense works, a closed single rectangular cavity model was developed to obtain the explosion load distribution at the walls of typical cavities and the corresponding destruction forms resulted from the explosion inside the cavities. The developed cavity model was applied to carry out internal explosion experiments, in which the mass of the TNT charge was increased gradually until the cavity model could be damaged. Pressure and acceleration sensors were used to record the explosion pressure-time curves and the vi- bration acceleration-time curves at the cavity walls, respectively. And the explosion load distributions at the cavity walls and the destruction form of the model structure were analyzed. The first peaks of the measured data were compared with the results of theoretical calculation and numerical simulation to discuss the cause for the errors among the three methods.

关 键 词：爆炸力学 爆炸效应 内爆炸 典型空腔 

分 类 号：O381[理学—流体力学]