NUMERICAL SIMULATION OF HIGH SPEED PENETRATION INTO CONCRETE BY STEEL PROJECTILES
During the high speed penetration process, there is an upper limit velocity for the rigid body penetration theory. When the impact velocity excess the critical value, the distortion and eroding of projectile must be considered, and the penetration depth will decrease. In this paper, the high speed concrete penetration by steel projectile are simulated using the LS-DYNA programme. The plastic kinematic hardening model (P-K model) is used for the steel projectile and the contact and eroding between the projectile and the concrete target are controlled. The numerical simulation results show the critical limit velocity really exists for blunting and eroding projectile. The greater the initial impact velocity increase, the severer the projectile nose shape change and eroding become, the penetration depth will reduce. By contrasting the numerical simulation results with the experimental results, the steel projectile model parameters are chosen to simulate the high velocity penetration into concrete. At last, the penetration ability of three types projectiles is analyzed by the numerical simulation using the chosen model parameters.
WU Hai-jun HUANG Feng-lei DUAN Zhuo-ping WANG Yin-an YU Zheng-wei
State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology, Beijing 100081, China
国际会议
25th International Symposium on Ballistics(第25届国际弹道会议)
北京
英文
1304-1311
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）