截锥形弹低中速贯穿薄靶板时的动力分析与计算

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Dynamical Calculation and Analysis on Penetration of Target Plates by Truncated Conical Projectiles

摘要: 本文根据引信设计的需要,结合引信的结构特点,对截锥形弹以低速(200～500米/秒)和中速(500～1000米/秒)贯穿薄靶板(包括金属铝板和非金属的木质胶合板)时的动态特性进行了分析和计算。在建立模型过程中,由于考虑了靶板强度效应的影响,解决了原来一些模型对低速冲击不适用的问题。并通过惯性效应和强度效应的比较,从理论上证明了Zaid和Paul的试验结论:即当冲击速度高于500米/秒时,可忽略强度的影响,而当冲击速度低于500米/秒时,不能忽略强度效应的影响。

Abstract: In this paper, dynamical calculation and analysis are made on penetration of thin plates by truncated conical projectiles in terms of the needs of fuze designing. The impact velocity ranges from 200w/s ts to 1000m/s (including both low and high velocities). The target plates include the thin aluminium plate (metal) and the plywood (non-metal).Because a strength effect of target plates is considered in the establishment of dynamical models, we solved the problem that some previous models were not suitable to lowvelocity impact, for example, M. Zaid and B. Paul's models.^[1][2][3] Bv comparison of menial effect with strength effect, we theoretically proved Zaid and Paul's experimental conclusion^[3]: "Only when the impact velocity is more that 500m/s can the strength effect be neglected. Otherwise this effect can not be neglected.

[1]	Zaid,M.and B.Paul,Mechanics of high speed projectile perforation.J.Franklin Institute,264(1957),117-125.
[2]	Zaid,M.and B.Paul,Oblique perforation of a thin plate by a truncated conical projectile,J.Franklin Institute,268(1959),24-44.
[3]	Paul,B、and M.Zaid,Normal perforation of a thin plate by truncated projectile,J.Franklin Institute,265(1958),317-336.
[4]	Awerbuch,J.and S.R.Bodner,Analysis of the mechanics of perforation of projectiles in metallic Plates,Int.J.Solids Structures,10(1974),671-684.
[5]	Woodward,R.L.and M.E.de Morton,Penetration of targets by flat-ended projectiles,Int.J.Mech.Sci.18,(1976),119-127.
[6]	钱伟长,《穿甲力学》,国防工业出版社出版,统一书号:15034, 2753.
[7]	高世桥,试验报告及程序设计,北京工业学院力学工程系报告,1984年4月.

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