Numerical Simulation for some certain Submarine Bullets Ezterior Ballistic
In order to investigate the exterior ballistic for some certain submarine bullet, the bullet-water couple model is built by using LS-DYNA and the simulation is done. The bullet adopts the elastic-plastic material model and the water adopts the null model and equation of state of Gruneisen, the ALE algorithm couple key word is added between bullet and water, thus the complete model is defined. By giving the fixed boundary condition for the water, the model is submitted to the solver. The numerical simulation results indicate: the submarine bullets velocity drops fast and it drifts due to lifting force, whats more, the cavity behind bullet occurs and becomes longer and larger in radius direction, and the suction pressure blocks the bullets motion. Thus the suggestion of importing bottom blowout technology is submitted. The research of this paper can give some reference for better understanding exterior ballistic for submarine bullet.
Submarine bullet Couple Cavity
Chang Xuefang Xu Jian
Electromechanical Engineering College, North University of China, Taiyuan,Shanxi,030051
国际会议
第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)
重庆
英文
533-536
2009-08-01（万方平台首次上网日期，不代表论文的发表时间）