摘要
研究动能弹侵彻混凝土类问题的数值模拟计算中,网格单元尺寸的划分对计算结果的影响规律,找出合理的网格尺寸取值范围.应用非线性动力学分析软件AUTODYN-2D,对57mm口径尖头弹丸以300m/s着速垂直侵彻直径1.6m,厚1m的混凝土靶板进行仿真计算,得到了靶板不同计算网格尺寸条件下的侵彻深度、侵彻过载以及损伤区数据.通过对比分析确定,为得到比较理想的计算结果,弹丸半径和网格边长的比值λ应该在6.0左右取值.
In the simulation of concrete penetration, the mesh size has a direct effect on the calculation result. An example of a 57 mm caliber cuspidal warhead vertically penetrating a concrete plate （diameter 1.6 m, thickness 1 m） with a compacting velocity of 300 m/s was simulated by using non-linear dynamics analysis software AUTODYN-2D, The effects of different target mesh sizes on the penetration depth, overloading, and spalling size are studied. By analysising the simulation results, a proper range of mesh size with regard to this kind of problems is obtained.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2005年第8期659-662,共4页
Transactions of Beijing Institute of Technology
基金
国家"九七三"计划项目(51309)
关键词
混凝土侵彻
动能弹
数值仿真
网格尺寸
concrete penetration
kinetic projectile
numerical simulation
mesh size
