摘要
为研究内爆炸条件下温压炸药和TNT在钢制方形多舱室密闭结构的毁伤效应,建立由4个小舱室结构组成的钢制整体箱体结构和有限元模型,开展了0.2、0.4和1.0kg温压炸药和TNT的试验研究和数值模拟。结果表明,模拟得到的超压峰值、变形量和毁伤趋势与试验结果具有良好的吻合度,同质量下温压炸药的毁伤能力明显强于TNT,体现在起爆舱室内靠近自由通道的测点的峰值压力以及整体钢制箱体的变形上;钢制箱体的毁伤程度随着装药量的增加而愈加严重,顶盖钢板的变形程度由轻微变形升级为钢板出现裂缝,直至顶盖加筋端口破裂及内侧隔板顶部断裂破坏,温压炸药造成的最大变形量约为TNT的2倍。
To investigate the damage effect of thermobaric explosives and TNT under internal explosion conditions on a steel square multi compartment closed structure,a steel integral box structure and finite element model consisting of four small compartments were established.Experimental studies and numerical simulations were conducted on 0.2,0.4,and 1.0kg thermobaric explosives and TNT.The simulation results show good agreements between the peak overpressure,deformation,and damage trend with the experimental results.Under the same mass,the destructive ability of thermobaric explosives is significantly stronger than that of TNT,which is reflected in the peak pressure of the measuring point near the free channel in the detonation chamber and the deformation of the overall steel box.The degree of damage to the steel box increases with the increase of the charge amount.And the deformation of the top cover steel plate upgrades from slight deformation to the occurrence of cracks in the steel plate,until the top reinforcement port of the top cover ruptures and the top of the inner partition fractures and breaks.The maximum deformation caused by thermobaric explosives is about twice that of TNT.
作者
薛建锋
郭淳
汪维
许红浩
XUE Jian-feng;GUO Chun;WANG Wei;XU Hong-hao(Jiangxi Hongdu Aviation Industry Group Co.,Ltd.,AVlC,Nanchang 330024,China;School of Equipment Engineering,Shenyang Ligong University,Shenyang 110159,China;Key Laboratory of Impact and Safety Engineering,Ministry of Education,Ningbo University,Ningbo Zhejiang 315211,China)
出处
《火炸药学报》
北大核心
2025年第7期645-653,I0003,共10页
Chinese Journal of Explosives & Propellants
基金
国家自然科学基金(No.11972201)。
关键词
爆炸力学
钢制箱体结构
温压炸药
毁伤效应
破坏模式
explosion mechanics
steel box structure
thermobaric explosive
damage effect
damage mode
