摘要
为实现对大型复杂结构在冲击载荷下的高效率数值模拟,采用弹-塑性流体力学模型,设计了区域分解的显式动力学有限元并行算法,并基于面向对象的、具有并行与网格自适应功能的有限元软件包AFEPack,方便地解决了非结构网格的自动区域划分、内边界上的数据通信和动态负载平衡等关键技术问题,并开发了三维拉格朗日动力学有限元程序。通过算例验证,计算结果合理,与LS-DYNA3D计算结果符合较好,表明关键算法及程序正确,具有较高的并行效率。
This paper presents the parallel algorithm developed with the elastic-plastic dy-namic model for simulation of impact response of large scale and complicated structures under explosive/impact loading,and the 3D Lagrangian code developed based on AFEPack（adap-tive finite element package） which supports parallel and unstructured mesh adaptation pro-gramming.Some critical problems are easily solved,e.g.region decomposition on unstruc-tured meshes,messaging among regions and the dynamic load-balancing.The algorithm and its efficiency are verified by a simple example,and the results agree well with the calculation results by LS-DYNA3D.
出处
《现代应用物理》
2014年第3期227-232,共6页
Modern Applied Physics
