摘要
关于靶体侵彻的研究一直是一个很活跃的领域,但由于整个侵彻过程时间极短,实验研究很难对侵彻过程进行全面的、准确的分析。文中综合有限单元法(FEM)和光滑质点流体动力学方法(SPH)的优点,利用FEM-SPH耦合方法对弹丸侵彻有限钢靶进行数值模拟。研究结果表明,FEM-SPH耦合方法能够较为准确的模拟大变形、不连续介质的动力问题,并可避免网格重分或网格消蚀,同时又具有较高的效率。
The research on projectile penetrating into target is always a realm. But the time of the whole penetration process is very short, which makes researchers difficult to give the general and accurate analysis according to experiment. In the paper, projectile penetrating into steel target was simulated by incorporation of the SPH algorithm into finite element method, this method combines the advantage of finite element method and SPH algorithm. According to research, the coupling method of SPH and FEM for projectile penetrating into concrete subjected large strain and discontinuity is quite accurate. At the same time, the coupling method makes the mesh rezoning or mesh eroding unnecessary and simulation quite efficient.
出处
《弹箭与制导学报》
CSCD
北大核心
2008年第5期105-108,共4页
Journal of Projectiles,Rockets,Missiles and Guidance
关键词
侵彻
数值模拟
SPH算法
耦合方法
有限元法
penetration
numerical simulation
SPH algorithm
coupling method
finite element method
