Dynamic Spherical Cavity-Expansion in Concrete

被引：0

作者：

蔺建勋 ^{[1
]}

蒋浩征 ^{[1
]}

蒋建伟 ^{[1
]}

王秀兰 ^{[1
]}

机构：

[1] 北京理工大学机电工程系

来源：

Journal of Beijing Institute of Technology | 1999年 / 01期

关键词：

侵彻; 混凝土; 空腔膨胀; 弹丸;

D O I：

10.15918/j.jbit1004-0579.1999.01.014

中图分类号：

TJ012.4 [终点弹道学];

学科分类号：

0826 ;

摘要：

目的确定球形空腔在混凝土介质中膨胀时球形空腔表面的应力．方法在Ｅｕｌｅｒ坐标系中，采用ＭｏｈｒＣｏｕｌｏｍｂ屈服准则，应用相似变换的方法推导了球形空腔在混凝土介质中膨胀时弹、塑性区径向无量纲应力的解析表达式．结果得到了球形空腔表面上径向无量纲应力，分析了球形空腔表面无量纲径向应力与锁定体积应变的关系．结论将得到的球形空腔表面应力应用于弹丸侵彻混凝土介质的侵彻方程后，得出的结果与试验结果的相对误差小于１５８％。

引用

页码：77 / 83

页数：7

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