Numerical Simulation Study on Effect of Aspect Ratio for Penetration Process of Long-rods
Using LS-DYNA finite element program and referencing the existing experimental data to set up numerical simulation for tungsten alloy long-rods penetrating into semi-infinite target.The numerical model was checked.In order to investigate the effect of aspect ratio on the long-rods penetration process,setting up numerical simulation for different aspect ratio long-rods penetrating into semi-infinite target without changing material and mass of the penetrator.Simulation results show that: the results are good agreement with the experimental data,indicating that the numerical model established and the material parameter calibrated are reasonable and effective in this paper.At the same impact velocity,the larger the aspect ratio,the smaller the diameter of the crater,the deeper the penetration depth,the penetration efficiency reduces.But with the increasing of aspect ratio,these effects become weakened gradually.
Long-rod Aspect Ratio Penetration Numerical Simulation
Lei MAO Qing FANG
National Key Laboratory of Transient Physics,Nanjing University of Science and Technology,Nanjing Jiangsu 210094,P.R.China
国际会议
The 5th International Conference on Mechanical Engineering and Mechanics(第五届国际机械工程与力学会议)
江苏扬州
英文
150-155
2014-08-21（万方平台首次上网日期，不代表论文的发表时间）