爆炸冲击下某型装甲车内PBX装药的力学响应  

Mechanical Response of PBX Charge in a Type of Armored Vehicle by Explosive Impact

作　　者：于弘兴 蔡宣明[1] 郭安肖 韩林壮 张迅 YU Hongxing;CAI Xuanming;GUO Anxiao;HAN Linzhuang;ZHANG Xun(School of Aerospace Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学航空宇航学院,山西太原030051

出　　处：《中北大学学报(自然科学版)》2025年第1期45-52,共8页Journal of North University of China(Natural Science Edition)

基　　金：国家自然科学基金资助项目(12272356);省部共建动态测试技术国家重点实验室基金资助项目(2022-SYSJJ-03);中北大学第19届研究生科技立项(20231974)。

摘　　要：爆炸冲击下装甲车内的弹药会发生弹跳现象,亟需探明装甲车内弹药的运动趋势及弹药装药部的力学响应。通过建立基于典型毁伤源的流固耦合仿真模型,对装载弹药的某型装甲车进行了毁伤数值模拟研究,分析了不同毁伤源作用下装甲车内弹药的运动趋势及弹药装药部的力学响应。结果表明:在毁伤源装药比近似相等的情况下,毁伤源的长径比越大,装甲车底板的形变程度越大,底板因变形而对弹药施加的冲击载荷是直接导致弹药弹跳的原因,弹药整体运动趋势呈现斜坡状;不同毁伤源作用下装甲车底板的微小形变仍可对装甲车内弹药施加较大的冲击载荷,弹药的颈部位置与底部位置会承受较大压力,应作为重点防护区域。该研究可为含能材料的运输及防护提供参考依据。There are bounce phenomenon of vehicle mounted ammunitions caused by explosion impact,therefore it is urgent to find out the movement trend of vehicle mounted ammunitions and the mechanical response of the charge.In order to analyze the movement trend of vehicle mounted ammunitions and the mechanical response of the charge under different sources of damage,a typical damage source fluid-solid coupling simulation model was built,and the damage to a type of armored vehicle loaded with ammunitions was simulated.The results show that,in the case of approximately equal damage source charge ratios,the greater the length-diameter ratio of the damage source,the greater the degree of deformation of the armored vehicle’s base plate,and the impact load exerted on the munition by the deformation of the base plate is the direct cause of the munition’s bounce,the movement trend of vehicle mounted ammunitions is slope-like.When the damage sources are different,the small deformation of the bottom plate of the armored vehicle can still impose a large impact load on the vehicle mounted ammunitions.The neck position and the bottom position of the ammunitions are subjected to a large amount of pressure,and these locations should be considered as priority protection areas.This study can provide a reference basis for the transportation and protection of energetic materials.

关 键 词：爆炸冲击载荷 装甲车内弹药 PBX装药 弹药防护 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术]