摘要
采用LS-DYNA程序对聚能装药问题进行数值仿真研究是一种经济有效的方式。为解决当前仿真中采用三维ALE流-固耦合方法带来的效率低、耦合困难、计算易中断等问题,提出了二/三维纯ALE仿真方法。借助LS-DYNA程序,应用上述各方法对聚能射流成型及侵彻靶板过程进行了数值仿真与比较。结果表明,纯ALE仿真方法模拟更加流畅稳定,所得结果与试验吻合良好;在同等条件下,二维纯ALE方法精度更高,计算效率大幅提高,弥补了以往采用LS-DYNA程序只能实现聚能装药三维数值仿真的缺点。
The LS-DYNA program to the problem of shaped charge numerical simulation is an economic and effective way.To solve the problems of low efficiency,difficult of coupling and computing in the simulation with simple 3D-FluidStructure Interaction（FSI）method,2D/3D pure ALE method is proposed.With the LS-DYNA program,above methods are used to simulate and compare the process of jet forming and penetrating target respectively.It proves that the pure ALE method is more fluent and stable,the results coincide well with the experimental results.Under the same condition,the 2D pure ALE method has a higher accuracy,the computational efficiency is greatly improved,which makes up for the fault that it can only use 3D method for simulation in the past.
出处
《计算机与数字工程》
2016年第2期218-222,274,共6页
Computer & Digital Engineering
关键词
聚能射流
数值仿真
侵彻
shaped charge jet
numerical simulation
penetration
