冲击加载下厚靶后表面早期几何变形特征分析
发布时间：2018-10-04 22:13
【摘要】：通过数值模拟研究了厚靶后表面在冲击加载下早期的几何变形特征,计算结果表明:厚靶变形存在一个由前凸型翻转为内凹型的时间窗口期,与传统研究薄靶的前凸型几何变形存在差异。结合电探针阵列测试方法获得的实验结果,从一个方面解释了工程实验中重复性不强的原因,因为这个窗口期非常敏感,与电探针阵列与后表面的距离密切相关。
[Abstract]:The geometric deformation characteristics of the thick target surface at the early stage of impact loading are studied by numerical simulation. The results show that there exists a time window period in which the thick target deformation is reversed from the protruding shape to the concave shape. There is a difference between the former convex geometric deformation of thin target and the traditional study. Combined with the experimental results obtained by the electric probe array method, the reason for the low reproducibility in the engineering experiments is explained from one aspect, because the window period is very sensitive and is closely related to the distance between the electric probe array and the rear surface.
【作者单位】： 中国工程物理研究院流体物理研究所;
【分类号】：O347
本文编号：2252074
[Abstract]:The geometric deformation characteristics of the thick target surface at the early stage of impact loading are studied by numerical simulation. The results show that there exists a time window period in which the thick target deformation is reversed from the protruding shape to the concave shape. There is a difference between the former convex geometric deformation of thin target and the traditional study. Combined with the experimental results obtained by the electric probe array method, the reason for the low reproducibility in the engineering experiments is explained from one aspect, because the window period is very sensitive and is closely related to the distance between the electric probe array and the rear surface.
【作者单位】： 中国工程物理研究院流体物理研究所;
【分类号】：O347
【共引文献】
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1 刘军;王言金;冯其京;张树道;;材料特性对爆轰驱动飞层对碰凸起影响的数值模拟[J];高压物理学报;2015年01期
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