长方体密闭结构内爆炸冲击波传播与叠加分析模型  

An Analytical Model for Propagation and Superposition of Internal Explosion Shockwaves in Closed Cuboid Structure

作　　者：杨亚东[1,2] 李向东[2] 王晓鸣[2] 

机构地区：[1]重庆红宇精密工业有限责任公司,重庆402760 [2]南京理工大学智能弹药技术国防重点学科实验室,江苏南京210094

出　　处：《兵工学报》2016年第8期1449-1455,共7页Acta Armamentarii

基　　金：国家自然科学基金项目(51278250)

摘　　要：采用镜像爆源构建内爆炸结构壁面反射作用与非线性叠加处理多波耦合效应相结合的方法,建立了长方体密闭结构内爆炸冲击波传播和叠加分析模型。该模型可以用于内爆炸荷载的快速工程计算。算例分析表明,结构壁面点上第一峰值超压、脉冲宽度和比冲量的预测值与试验结果的最大相对误差分别为-10.5%、-19.2%和13.2%,模型预测内爆炸冲击波特征参量与试验结果较为吻合,验证了该分析模型的有效性。The method of using an image blast source to establish the reflection effect from the walls of structure is combined with the nonlinear superposition principle to deal with the multi-wave coupling effect. An analytical model of shockwave propagation and superposition in closed cuboid structure is established. The proposed model can be used for the rapid calculation of internal explosion loading in engineering projects. The results show that the maximum relative errors of theoretical and experimental first peak overpressures,pulse widths and specific impulses on the wall are less than- 10. 5%,- 19. 2%and 13. 2%,respectively. The theoretical characteristic parameters of internal explosion are in good agreement with the experimental ones,which verifies the validity of this analytical model.

关 键 词：兵器科学与技术 内爆炸 密闭空间 爆炸荷载 冲击波超压 传播 叠加 

分 类 号：O383.2[理学—流体力学]