基于量纲分析的两次内爆加载下舱室结构损伤规律研究  

Dimensional analysis research on the damage law of cabin structure under two implosion loading

作　　者：李锡锋 巨圆圆 杜志鹏 张磊 周春桂[2] 李旭东 LI Xifeng;JU Yuanyuan;DU Zhipeng;ZHANG Lei;ZHOU Chungui;LI Xudong(Naval Research Academy, Beijing 100161, China;School of Mechanical and Electrical Engineering, North University of China, Taiyuan 030051, China)

机构地区：[1]海军研究院,北京100161 [2]中北大学,机电工程学院,太原030051

出　　处：《兵器装备工程学报》2022年第3期94-98,共5页Journal of Ordnance Equipment Engineering

摘　　要：以舰舱室结构在承受多发武器攻击时的动态响应为背景,研究单舱室结构在两次内部爆炸加载下结构的变形规律。利用有限元软件AUTODYN进行两次内爆冲击波的数值仿真,通过量纲分析研究内爆载荷下舱室结构的影响因素,分析起爆位置和爆炸当量对舱室结构变形的影响规律。结果表明:在爆炸当量为2~10 kg、炸点位置距离舱壁中心0.4~1.2 m,舱壁结构毁伤模式为挠曲变形和局部破口;仿真得出舱壁最大挠厚比和炸药当量/舱壁边长、炸药当量/爆距存在线性关系并得出内爆无量纲损伤数D_(m);将各种工况下的无量纲损伤数与爆炸当量进行统计,发现2种毁伤模式之间存在较为明显的分界线,分界线方程可用一元二次方程拟合。The deformation law of the single-chamber structure under two internal explosion loads was studied.Dimensional analysis and numerical simulation were used to study the damage law of the cabin structure under implosion load.The results show that under a certain explosion distance and explosive equivalent conditions,the bulkhead structure has two damage modes:flexural deformation and local fracture;The simulation data was analyzed,and the implosion dimensionless damage number Dm was obtained;there is a clear dividing line between the two damage modes,and the dividing line equation can be expressed by a quadratic equation of one element.

关 键 词：舱室内爆 多次爆炸 毁伤模式 量纲分析 数值仿真 

分 类 号：TJ83[兵器科学与技术—武器系统与运用工程] O383[理学—流体力学]