摘要
基于分离式霍普金森压杆(SHPB)实验获取复合材料易碎弹及航空有机玻璃的材料动态力学参数,选择合理描述易碎弹与有机玻璃材料的本构模型;采用显示动力学分析软件LS-DYNA中的光滑粒子流体动力学(SPH)方法对易碎弹侵彻靶板全过程进行仿真分析。通过仿真分析研究易碎弹着靶速度、入射角度对弹体破碎和靶板毁伤的影响规律,对比不同工况下子弹的破碎效果及毁伤性能,分析总结相关规律。结果表明:子弹的破碎效果及毁伤性能随着入射速度的增大提高明显;相同速度下,子弹垂直入射靶板其破碎与毁伤效果均要优于倾斜入射靶板。数值模拟方法及结果为易碎弹的研制提供了一定的理论参考依据。
Dynamic mechanics parameters of composite fragile projectile and aviation organic glass are obtained by split Hopkinson press bar （SHPB） experiment. The reasonable material constitutive models are chosen to model the fragile projectile and organic glass based on LS-DYNA software. The simulation of the fragmentation process of fragile projectile penetrating target is carried out with smoothed particle hy- drodynamics（SPH） method. The influence rule of projectile frangibility and damage performance is re- searched by analyzing the falling speed and impacting angle of projectile, and the relevant results are summarized by comparing the fragile and damage performances. Simulation result shows that the perform- ances of fragmentation and penetration increase as the incident velocity increases, and at the same veloci- ty, the performances of fragmentation and penetration under normal penetrating are superior to oblique penetrating. Numerical simulation and analysis of results offer a theoretical reference for the study of fragile projectile.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2013年第9期1057-1064,共8页
Acta Armamentarii
基金
国家自然科学基金项目(10972033)
关键词
兵器科学与技术
易碎弹
侵彻
数值模拟
破碎
ordnance science and technology
fragile projectile
penetration
numerical simulation
fragmentation
