MATERIAL POINT METHOD AND APPLICATION TO IMPACT AND PENETRATION
Being a fully Lagrangian particle method, the material point method (MPM) discretizes a material domain using a collection of material points. To illustrate the capability of MPM in the simulations of hypervelocity impact, the impact of a spherical lead projectile with a velocity of 6.58 km/s on a thin lead plate is examined. The MPM simulations of the bullet-speed penetration problems are still challenging tasks due to the stick contact condition included in the standard MPM. The contact MPM algorithm for penetration simulation is developed. Different MPM algorithms solve a penetration probleM with an impact velocity 575 m/s. The calculations show the projectiles residual velocities computed by the contact MPM algorithm are closest to the experimental results.
HUANG Peng ZHANG Xiong HUANG Xi-cheng CHEN Xiao-wei
School of Aerospace, Tsinghua University, Beijing 100084, China Institute of Structural Mechanics, C School of Aerospace, Tsinghua University, Beijing 100084, China Institute of Structural Mechanics, China Academy of Engineering Physics, Mianyang 621900, China
国际会议
25th International Symposium on Ballistics(第25届国际弹道会议)
北京
英文
1359-1366
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）