摘要
用Ф22×64mm的聚碳酸酯(PC)圆柱形弹丸,以172m/s^234m/s的速度撞击刚性靶板,用幅频为4.05×104幅/秒的高速数字相机记录了PC弹丸撞击时的变形过程,用PVDF测力薄膜测定了弹丸头部与刚性靶表面碰靶过程的应力-时间曲线,获得了可供建立分析模型参考的实验数据。采用Syomds-Cowper过应力模型对PC材料应变率敏感性进行了初步分析,根据经典的Taylor理论计算了PC的名义应变率和相应的动态流动应力,其结果与实验数据基本一致。
Experimental studies on ballistic of cylindrical polycarbonate impacting rigid target were conducted.A flat-ended cylindrical polycarbonate ballistic with 22mm diameter and 64mm long was impacted on the rigid target at speeds ranging from 172 m/s to 234 m/s.During the experiment,the deformation process of polycarbonate ballistic was recorded by using the high rate digital camera with a frequency of 4.05×10~4 frame/s,and the stress-time history curves between the ballistic nose and rigid boundary on the impa...
出处
《实验力学》
CSCD
北大核心
2006年第2期157-164,共8页
Journal of Experimental Mechanics
基金
中国工程物理研究院科学技术基金资助项目(20040865)
关键词
柱形弹丸
聚碳酸酯
撞击
cylindricalballistic
polycarbonate
impact
