An Improved Gurney Model to Predict Initial Velocity of Parallel-moving Rod-shaped Fragment

B Xue, Q Jing

Abstract


An improved Gurney model considering explosive energy waste originated in the process of driving rod-shaped fragment revolving, is proposed herein to predict initial velocity of parallel-moving rod-shaped fragment using parameters such as Gurney constant, mass ratio of explosive charge to rod-shaped fragments, and slanting angle of rod-shaped fragments arrangement. Static arena test was performed to evaluate validity of said improved model, and predictions based on the improved Gurney model exhibit impressive consistency with test results, providing a reliable methodology to predict initial velocity of parallel-moving rod-shaped fragments in the engineering development of controllable discrete rod warhead.

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References


PANG Jun, Yuan Bao-hui. Research States and Trend of Discrete Rod Warhead [J].Sichuan Ordnance Journal, 2013,34(8):43-45.

LIU Zhi-jian. Engineering Design of Controllable Rotation Discrete Rod [J]. Chinese Journal of Explosives & Propellants, 2002,(2):25-27.

LIU Zhi-jian, XIAO Chuan, WANG Qin-hui. The Design Analysis on the Controllable Rotation Discrete Rod [J]. Chinese Journal of Explosives & Propellants, 2000,(4):48-50.

HUANG Jing, ZHANG Qing-ming, LI Jin-qing, et al. Study on Damage Effect of Controllable Discrete Rod Fragment [J]. Journal of Projectiles, Rockers, Missiles and Guidance, 2008.28(1):125-127,134.

SUN Chuan-jie, LU Zhong-hua, LU Yong-gang, et al. Motion analysis of a controllable rotation discrete rod [J]. EXPLOSION AND SHOCK WAVES, 2008.28(4):378-383.

ZHANG Xin-wei, LV Hong-chao. Calculating Model Study of Controllable Discrete Rods Warhead [J]. AERO WEAPONRY, 2005.(6):35-37.

ZHOU Di-feng, CHEN Zhi-gang, WANG Wen-jia, et al. Numerical Simulation of Dual-beam Rotating Discrete Rod with Different Structure [J]. Journal of Projectiles, Rockers, Missiles and Guidance, 2010.30(5):93-96.

HE Yong, CHEN Qi. Simulated Experiment on Flight Performance of Rod about Discrete Rod Warhead [J]. Journal of Nanjing University of Science and Technology, 2006.30(5):546-549.




DOI: http://dx.doi.org/10.21152/1750-9548.12.1.49

Copyright (c) 2018 B Xue, Q Jing

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