Numerical analysis of critical jet penetration |
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Authors: | Qin Mengzhao Xie Chunsheng Tan Qingming Liu Xiao ping |
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Institution: | (1) Computational Center Academia Sinica, China;(2) Xian Modern Chemical Institute, China;(3) Institute of Mechanics, Academia Sinica, China |
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Abstract: | In this paper, a computational program for two dimensional unsteady compressible, elastic-plastic flow is used to study low
speed jet penetration into a steel target. Based on the computational results, the dynamic process of penetration can be distinguished
into two stages, cratering and steady penetrating. This is in agreement with the jet penetration mechanism developed by Cheng
Che Min in 19721,2]. The consumption of the jet energy is discussed and the value of the critical jet velocity, which represents the strength
resistance of the target, is estimated. |
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Keywords: | Jet penetration hydro-elasto-plastic flow numerical |
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