爆轰驱动异形杆在空气阻力作用下的动力学模拟  

Dynamics simulation of a profiled rod after detonation flying against air resistance

作　　者：宁惠君[1] 王浩[2] 吴坛辉[3] 章猛华 张成[2] 阮文俊[2] 

机构地区：[1]河南科技大学土木工程学院,河南洛阳471023 [2]南京理工大学能源与动力工程学院,江苏南京210094 [3]上海交通大学工程力学系,上海200240

出　　处：《爆炸与冲击》2015年第4期541-546,共6页Explosion and Shock Waves

基　　金：航天一院高校联合基金项目(CALT201105)

摘　　要：针对本文中提出的一种异形杆结构设计方案,建立爆轰驱动异形杆动力学模型,利用ANSYS/LSDYNA对爆轰驱动异形杆的运动过程进行了数值模拟,获得了爆炸作用结束后产生塑性变形的异形杆模型及初速度。爆炸作用后异形杆在空气流场中运动只产生弹性变形,将杆视为柔性体,运用ADAMS软件对异形杆在空气阻力作用下的运动过程进行了数值模拟。分析结果表明,将异形杆视为柔性体,考虑爆轰作用引起的杆条塑性变形这一数值算法能更准确地描述爆轰驱动异形杆在空气阻力作用下的运动规律。Based on the design of a profiled rod, a dynamics model was proposed for the profiled rod driven by dentonation. The motion process of the profiled rod driven by dentonation was simulated by ANSYS/LS-DYNA. The model for the profiled rod after detonation and the initial velocity were achieved. Considering the aeroelastic deformation caused by the profiled rod flying in air fluid filed, the profiled rod was regarded as a flexible body, the motion process of the profiled rod flying against air resistance was simulated by ADAMS. The computed results show that the proposed simulation method can describe the motion states of the profiled rod accurately after detonation and provide a reference for the design of the profiled rod warhead.

关 键 词：爆炸力学 爆轰驱动 空气阻力 异形杆 

分 类 号：O381[理学—流体力学]