维普中文期刊产品整合服务

Effect of compressibility on the hypervelocity penetration

查看全文 作　　者：[1]W.J.Song;[2,3,4]X.W.Chen;[1]P.Chen 高影响力作者 机构地区：[1]Department of Mechanics and Engineering Science, College of Engineering, Peking University;[2]Advanced Research Institute for Multidisciplinary Science,Beijing Institute of Technology;[3]The State Key Lab of Explosion Science and Technology,Beijing Institute of Technology;[4]Centre for Applied Physics and Technology (CAPT), Peking University高影响力机构 出　　处：《Acta Mechanica Sinica》索引2018年第34卷第1期,共17页高影响力期刊 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. 关 键 词：COMPRESSIBILITY HYPERVELOCITY PENETRATION EQUATION of state (EOS) SHOCKWAVE BERNOULLI EQUATION
相关文献

参考文献(25)

引证文献(7)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费