沖擊加載下厚靶后表面早期幾何變形特征分析
發(fā)布時間:2018-10-04 22:13
【摘要】:通過數(shù)值模擬研究了厚靶后表面在沖擊加載下早期的幾何變形特征,計算結(jié)果表明:厚靶變形存在一個由前凸型翻轉(zhuǎn)為內(nèi)凹型的時間窗口期,與傳統(tǒng)研究薄靶的前凸型幾何變形存在差異。結(jié)合電探針陣列測試方法獲得的實驗結(jié)果,從一個方面解釋了工程實驗中重復(fù)性不強的原因,因為這個窗口期非常敏感,與電探針陣列與后表面的距離密切相關(guān)。
[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.
【作者單位】: 中國工程物理研究院流體物理研究所;
【分類號】:O347
本文編號: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.
【作者單位】: 中國工程物理研究院流體物理研究所;
【分類號】:O347
【共引文獻(xiàn)】
相關(guān)期刊論文 前1條
1 劉軍;王言金;馮其京;張樹道;;材料特性對爆轟驅(qū)動飛層對碰凸起影響的數(shù)值模擬[J];高壓物理學(xué)報;2015年01期
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