橡胶/钢/橡胶复合结构隔爆机理与优化设计  

Explosive Interruption Mechanism and Optimization Design of Rubber/steel/rubber Composite Structure

作　　者：张浩宇 徐豫新[1,2,3] 肖川 李旭东 ZHANG Hao-yu;XU Yu-xin;XIAO Chuan;LI Xu-dong(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China;Chongqing Innovation Center,Beijing Institute of Technology,Chongqing 401120,China;Tangshan Research Institute,Beijing Institute of Technology,Tangshan 063000 Hebei,China;Academy of Chinese Weapon Science,Beijing 100089,China;College of Mechatronic Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081 [2]北京理工大学重庆创新中心,重庆401120 [3]北京理工大学唐山研究院,河北唐山063000 [4]中国兵器科学研究院,北京100089 [5]中北大学机电工程学院,山西太原030051

出　　处：《火炸药学报》2023年第3期237-244,I0009,共9页Chinese Journal of Explosives & Propellants

基　　金：国防预研项目。

摘　　要：为揭示橡胶/钢/橡胶复合结构的隔爆机理,建立了隔爆结构优化设计方法。利用LS-DYNA模拟了冲击波在介质中的衰减过程;采用已有理论分析冲击波在橡胶与钢中的传播过程,获得冲击波在橡胶/钢/橡胶复合结构中的衰减规律;针对RDX冲击起爆TNT的典型工况开展了不同复合隔板下冲击起爆试验;基于试验结果,在验证理论模型的基础上进行了复合隔板参数对冲击波传播的影响规律研究。结果表明,橡胶/钢/橡胶对冲击波衰减效果优于橡胶/钢的复合隔板结构,更优于单一介质结构;提出复合隔板设计方法,增大隔板高低阻抗材料之间的阻抗差异,有利于提高隔板对冲击波衰减效果;在隔板材料和总厚度一定的情况下,优先增加两端低阻抗材料厚度,减小中间高阻抗材料厚度。In order to reveal the interruption mechanism of rubber/steel/rubber composite structure,the optimization design method of interruption structure was established.The attenuation process of shock wave in the medium was simulated by LS-DYNA.The propagation process of shock wave in rubber and steel was analyzed by using the existing theory,and the attenuation law of shock wave in rubber/steel/rubber composite structure was obtained.The impact initiation test under different composite partitions was carried out based on the typical working conditions of RDX impact initiation of TNT.Based on the test results,the influence of composite partition parameters on shock wave propagation was studied on the basis of the theoretical model.The results show that the attenuation effect of rubber/steel/rubber on shock wave is better than that of rubber/steel composite partition structure and better than that of single medium structure.The design method of composite partition is proposed to increase the impedance difference between the high and low impedance materials of the partition,which is beneficial to improve the attenuation effect of the partition on the shock wave.In the case of a certain separator material and total thickness,the thickness of the low-impedance material at both ends is preferentially increased,and the thickness of the middle high-impedance material is reduced.

关 键 词：爆炸力学 复合结构 接触爆炸 冲击波传播 隔爆机理 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O38[理学—流体力学]