半球头长杆弹高速侵彻半无限厚靶临界速度理论模型

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Abstract In order to destroy protected fortifications，researchers are putting more and more attention on hypervelocity penetration. With the increase of impact velocity, rigid penetration of the projectile will transfer to the deformation and hydrodynamic penetration. During this process, the depth of penetration (DOP) of long rod projectile (LRP) may change at a transition point form increase to decrease. Based on conservation laws of quality and momentum, theoretical equations were established to calculate the transition velocity between deformation and hydrodynamic penetration. Also the influence of the penetrator and target parameters on the transition velocity were analyzed after verifying the reliability of calculation model. The calculation results show that with the increasing of static yield strength, deformation length of the projectile is decreased, the transition velocity between deformation penetration and hydrodynamic penetration are decreased. Accordingly, projectile and target plastic wave velocity have significantly influences on the critical velocity.

Key words： explosion mechanics hypervelocity penetration state of penetration transition velocity projectile deformation

Received: 17 October 2017 Published: 28 April 2019

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	Articles by authors
	LIU Chuang1
	ZHANG Xianfeng1
	HUANG Changqiang1
	2
	DING Li1
	XU Chenyang1
	DENG Jiajie1

Cite this article:

LIU Chuang1,ZHANG Xianfeng1,HUANG Changqiang1, et al. Critical speed theoretical model for hemispherical long rod projectiles’ penetrating semi-infinite thick target at high velocity[J]. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(9): 8-14.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2019/V38/I9/8

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