Effect of compressibility on the hypervelocity penetration

W. J. Song, X. W. Chen*, P. Chen

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

18 引用 (Scopus)
Plum Print visual indicator of research metrics
  • Citations
    • Citation Indexes: 18
  • Captures
    • Readers: 5
see details

摘要

We further consider the effect of rod strength by employing the compressible penetration model to study the effect of compressibility on hypervelocity penetration. Meanwhile, we define different instances of penetration efficiency in various modified models and compare these penetration efficiencies to identify the effects of different factors in the compressible model. To systematically discuss the effect of compressibility in different metallic rod-target combinations, we construct three cases, i.e., the penetrations by the more compressible rod into the less compressible target, rod into the analogously compressible target, and the less compressible rod into the more compressible target. The effects of volumetric strain, internal energy, and strength on the penetration efficiency are analyzed simultaneously. It indicates that the compressibility of the rod and target increases the pressure at the rod/target interface. The more compressible rod/target has larger volumetric strain and higher internal energy. Both the larger volumetric strain and higher strength enhance the penetration or anti-penetration ability. On the other hand, the higher internal energy weakens the penetration or anti-penetration ability. The two trends conflict, but the volumetric strain dominates in the variation of the penetration efficiency, which would not approach the hydrodynamic limit if the rod and target are not analogously compressible. However, if the compressibility of the rod and target is analogous, it has little effect on the penetration efficiency.

源语言英语
页(从-至)82-98
页数17
期刊Acta Mechanica Sinica/Lixue Xuebao
34
1
DOI
出版状态已出版 - 1 2月 2018

指纹

探究 'Effect of compressibility on the hypervelocity penetration' 的科研主题。它们共同构成独一无二的指纹。

引用此

Song, W. J., Chen, X. W., & Chen, P. (2018). Effect of compressibility on the hypervelocity penetration. Acta Mechanica Sinica/Lixue Xuebao, 34(1), 82-98. https://doi.org/10.1007/s10409-017-0688-1