摘要
破片的运动姿态会对飞机蒙皮的穿透效果及其穿透后的剩余速度产生不同影响。为分析其影响,首先进行靶板极限速度的穿透试验,由极限速度可划分速度计算区间作为典型状态条件。再利用LS-DYNA软件数值模拟破片在不同入射条件下,侵彻靶板时所造成的毁伤情况。数值模拟采用与试验相同的YL12铝合金作为靶板材质,破片近似为刚体,选取不同速度、不同入射角、不同角速度作为典型状态。统计仿真结果并进行分析,得出增加破片毁伤效果及提高其剩余速度的条件,其数据参数和结论可以为今后实验研究提供参考。
The incident attitude of the fragment cause different damage effects to the skin of an airplane, and residual velocities of the fragments will be different when they disrupt the skin. To analysis this effect, there is an experiment which fragments with different velocity penetrate Targets, and get the velocity limits with the formu las. Calculation sections are divided according to the velocity limits. Take simulation which fragments penetrate tar get causing damage in different incident conditions with the LSDYNA software. Simulation using the same materials as the experiment YL12 aluminum alloy, and the fragments approximate as a rigid body. Select typical attitudes which give the fragment different incidence angles and different speeds and different angular velocity. Statistics of the simulation results and analysis those results damage or it increase its residual velocity. The are taken. The conditions are got which fragment can make more data parameters and conclusions can provide a reference for future
出处
《科学技术与工程》
北大核心
2014年第10期95-98,103,共5页
Science Technology and Engineering
关键词
靶板
入射姿态
毁伤效果
剩余速度
数值模拟
target incident attitude damage effect residual velocity numerical analysis
