Calculation of oblique penetration depth of projectiles into an intrinsic friction medium

CHEN Wei; WANG Ming-yang; GU Lei-yu

doi:10.11883/1001-1455(2008)06-0521-06

Volume 28 Issue 6

Sep. 2014

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CHEN Wei, WANG Ming-yang, GU Lei-yu. Calculation of oblique penetration depth of projectiles into an intrinsic friction medium[J]. Explosion And Shock Waves, 2008, 28(6): 521-526. doi: 10.11883/1001-1455(2008)06-0521-06

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CHEN Wei, WANG Ming-yang, GU Lei-yu. Calculation of oblique penetration depth of projectiles into an intrinsic friction medium[J]. Explosion And Shock Waves, 2008, 28(6): 521-526. doi: 10.11883/1001-1455(2008)06-0521-06

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Calculation of oblique penetration depth of projectiles into an intrinsic friction medium

doi: 10.11883/1001-1455(2008)06-0521-06

1.
Engineering Institute, PLA University of Science and Technology, Nanjing 210007, Jiangsu, China;
2.
The Third Engineering Institute of General Staff, Luoyang 471023, Henan, China

Publish Date: 2008-11-25

Abstract

Abstract

Considering that the target is an intrinsic friction medium, the cavity-expansion approximation and dynamic equations of the medium near the cavity of penetration are used to calculate the resistance of the rigid warhead. The influence of the target with a free surface on penetration is taken into account and the oblique penetration process is divided into three phases. According to the above work, the formula to compute stress on the projectile surface is deduced and a new analytical solution to oblique penetration depth of the rigid projectile into the target is obtained. The solution is identical with the BLZ formula in form and the calculation results also fit well. The solution provides the theoretical explain for the BLZ formula.
- mechanics of explosion,
- oblique penetration,
- cavity-expansion approximation theory,
- intrinsic friction medium

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