A Penetration Model for Tunsgsten-copper Shaped Charge Jet with Non-constant Density

doi:10.3969/j.issn.1000-1093.2018.12.001

Abstract

Abstract: Tungsten-copper (W-Cu) is a friction-bonded two-phase composite material with relative low interface bonding forces. A density deficit caused by phase separation and transient vacancy is often observed in W-Cu jet. Traditional penetration models are mainly based on the constant-density assumption neglecting the microstructural changes in shaped charge jet, which may trigger a considerable calculation error in the penetration prediction of W-Cu jet with non-cosntant density. A modified virtual origin penetration model for W-Cu jet is proposed by introducing the density and speed functions of jet, in which both material compressibility and composition gradient are considered. Based on a typical shaped charge structure, the true density distribution of 75wt%W-Cu jet was obtained, and the calculated penetration depth was validated by the experiment. The results show that the W-Cu penetration model can greatly improve the calculation accuracy compared with the traditional virtual origin model and partially modified model. Key

Key words: shapedchargejet, tungsten-coppershapedchargejet, compositematerial, penetrationmodel

CLC Number:

TJ410.3⁺33

WANG Fang, JIANG Jian-wei, MEN Jian-bing. A Penetration Model for Tunsgsten-copper Shaped Charge Jet with Non-constant Density[J]. Acta Armamentarii, 2018, 39(12): 2289-2297.

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第39卷第12期
2018 年12月兵工学报ACTA
ARMAMENTARIIVol.39No.12Dec. 2018

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