结构动力分析显式积分并行算法与实现

在分布式并行计算机环境下开展有限元并行算法研究是计算力学领域的前沿课题之一。基于区域分裂法，提出了结构动力分析两种形式的显式积分法的并行算法及步骤；同时，在用Ｔｒａｎｓｐｕｔｅｒ组成的分布式ＭＩＭＤ并行计算机上，采用３Ｌ并行Ｆｏｒｔｒａｎ编写了计算程序，并将其移植到串并行混合有限元分析软件ＰＦＥＭ中；最后，通过对三维空间钢架结构的实际分析，不仅验证了算法和程序设计的正确性，而且结果表明算法具有较高的并行效率。当２个和３个ＣＰＵ工作时，并行效率分别为０．８和０．７。

Parallel algorithms and implement of explicit integration method for structural dynamic analysis

It is one of the most advanced subjects to carry out the parallel algorithm design for finite element methods on distributed memory MIMD computer in computational mechanics. In this paper, two kinds of parallel explicit algorithms for structural dynamic analysis are presented and implemented based on the domain decomposition method. Meanwhile, on the Transputer MIMD computer some programs are written in 3L Parallel Fortran language and assembled into PFEM which is a serial parallel mixed software system for structural dynamic analysis. At last, taking a 3 D truss structure analysis as an engineering computation example, the results show that the algorithms and programs are correct, and the parallel efficiencies are satisfactory as well, which are 0.8 and 0.7 respectively when two CPU and three CPU work.