聚碳酸酯的Taylor撞击实验及光塑性分析  

Taylor Impact Test of Polycarbonate and Photoplastic Analysis

作　　者：胡文军[1] 张方举[1] 陈裕泽[1] 符春渝[1] 王彤伟[1] 魏晓贞[1] 

机构地区：[1]中国工程物理研究院总体工程研究所,四川绵阳621900

出　　处：《高分子材料科学与工程》2010年第10期115-117,121,共4页Polymer Materials Science & Engineering

基　　金：中国工程物理研究院科学技术基金资助项目(20040865)

摘　　要：对φ22mm×64mm的圆柱形聚碳酸酯弹丸进行了速度为118m/s～278m/s范围内的Taylor撞击实验研究,用高速相机和PVDF测力薄膜监测得到了不同撞击速度下Taylor圆柱的变形过程和撞击面压力变化规律,并对撞击后的试样进行了光塑性分析。结果表明,聚碳酸酯材料在低速撞击时符合Taylor撞击的二阶段变形模式,在撞击速度较高时满足三阶段变形模式,而且撞击端面的压力呈现出振荡衰减,当撞击速度为278m/s时,撞击端面破坏,试样内部的应变存在变形模式的转变。In this paper,we performed the experimental study of Taylor test of cylindrical polycarbonate material,a flat ended cylindrical polycarbonate ballistic with 22mm diameter and 64mm long was impacted on the rigid target at speeds ranging from 118m/s to 278m/s.High-speed photography was used to monitor the progression of deformation within the sample,and impact pressure was measured by polyvinylidene fluoride （PVDF） membrane,photoplastic method was used to analysis deformation characteristic after impact. The results show that deformation process of polycarbonate Taylor impact is in agreement with Jones＇s two-stage model at low-speed impact and three two-stage model at high speed impact,impact shock pressure oscillation decays on impacting flat ended,and impacting flat ended has been destroyed when impact speed is 278 m/s. Deformation model transition region in the samples internal strain was found.

关 键 词：聚碳酸酯 Taylor撞击 光塑性 等差线 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]