计算物理 ›› 2009, Vol. 26 ›› Issue (4): 559-563.

• 研究论文 • 上一篇    下一篇

长杆侵彻中材料参数对侵彻性能的影响

楼建锋1,2, 何长江1, 朱建士1, 王政1   

  1. 1. 北京应用物理与计算数学研究所, 北京 100088;
    2. 中国工程物理研究院北京研究生部, 北京 100088
  • 收稿日期:2008-03-21 修回日期:2008-07-23 出版日期:2009-07-25 发布日期:2009-07-25
  • 作者简介:楼建锋(1980-),男,浙江义乌,博士生,助理研究员,主要从事计算流体力学数值模拟方面的研究.
  • 基金资助:
    中国工程物理研究院科学技术发展基金(2007A09002);国家重点基础研究专项经费(2005CB321703)资助项目

Ballistic Performance of Long Rods: Material Properties

LOU Jianfeng1,2, HE Changjiang1, ZHU Jianshi1, WANG Zheng1   

  1. 1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China;
    2. Graduate School of China Academy of Engineering Physics, Beijing 100088, China
  • Received:2008-03-21 Revised:2008-07-23 Online:2009-07-25 Published:2009-07-25

摘要: 采用LS-DYNA程序研究长杆侵彻中材料参数对侵彻性能的影响.在弹塑性流体本构模型中,描述材料属性的主要参数有失效应变、屈服强度、剪切模量.通过对钨合金杆侵彻半无限厚铝合金靶的一系列数值计算,分析上述参数对侵彻深度的影响.数值结果表明,失效应变是影响侵深的主要参数,而屈服强度和剪切模量对侵深的影响较小.在此基础上,对着速在785 m·s-1~1 924 m·s-1范围内的长杆侵彻问题进行数值模拟,计算结果与试验数据符合较好.

关键词: 长杆侵彻, 材料参数, 侵彻性能

Abstract: Material properties are investigated on ballistic performance of tungsten-alloy rods with two-dimensional numerical simulations by program LS-DYNA.In an elastic-plastic hydrodynamic material model,primary parameters of the rod includes failure strain,yield stress and shear modulus,etc.Penetration is studied through simulation of a tungsten-alloy rod impacting on a semi-infinite aluminum-alloy target.It is shown that failure strain shows dominant effect on penetration. Numerical simulations of penetration within impact velocity regime ranging from 785 m/s to 1 924 m/s are performed.Numerical results are in good agreement with experimental data.

Key words: rod penetration, material parameter, ballistic performance

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