Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (4): 69-72.

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Numerical Simulation of Penetration of Composite Ceramic/Metal Armours

Zhang Xiao-qing1  Yao Xiao-hu1  Yang Gui-tong2  Huang Xiao-qing1   

  1. 1.College of Traffic and Communications,South China University of Technology,Guangzhou 5 10640,Guangdong,China;2.Institute of Applied Mechanics,Taiyuan University of Technology,Taiyuan 030024, Shanxi,China
  • Received:2004-07-14 Online:2005-04-25 Published:2005-04-25
  • Contact: 张晓晴(1974-)，女，博士，主要从事冲击动力学研究 E-mail:tcqzhang@scut.edu.en
  • About author:张晓晴(1974-)，女，博士，主要从事冲击动力学研究
  • Supported by:

    国家自然科学基金资助项目(10472033)；华南理工大学自然科学青年基金资助项目(320E5041430)

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Abstract:

The numerical simulation of the penetration of composite ceramic/metal armours was carried out bv using a large-scMe nonlinear Finite Element code IS-DYNA. Some processes in the penetration, such as the forming process of the conoid-shaped zone of the fragmented ceramic,the bending and cracking processes of the metal back-up plate,the mushrooming of the projectile and the vanishing process of the projectile head,were then investiga-ted.Furthermore,the curves of the coordinates of the projectile.armor interface and the rear end of the Drojectile varied with time were given.The simulated results are compared with the results of a theoretical analVSis aS well as the experimental results.It is concluded that the three kinds of results match fairly well with each other. The effect of the ratio of the ceramic thickness to the metal backup plate thickness on the impacticn-resistance abilitv of the composite arm our is also analyzed,with the result indicating that there is an optimum ratio for the impaction-resist-ance ability.This conclusion is valuable for the design of composite ceramic/metal armours.

Key words: flat-nosed projectile, composite arm our, penetration, ceramic conoid, thickness ratio, numerical sim-ulation