微机网络并行环境下杆壳组合结构动力特性并行计算

Parallel algorithm for dynamic structural analysis of shaft-shell structure on PC network parallel environment

回顾了有限元并行计算发展的历史,阐述了微机网络并行计算环境的意义,给出了基于微机网络并行环境的杆壳组合结构动力分析并行算法,该算法包括杆壳组合结构总刚度矩阵和总质量矩阵的并行计算以及求解广义特征值问题的并行子空间迭代法的并行计算,在多台微机上安装PVM,使用Linux操作系统,构成分布式微机网络并行计算环境,将上述算法用于某型号飞机机翼及某型号挂架动力特性的并行计算,在该并行环境下的数值试验表明所给算法是非常有效的。

This paper reviews the history of parallel computing for finite element method, expounds the meaning of PC network parallel environment and presents a parallel algorithm for dynamic analysis on shaft-shell structure based on PC network parallel computing environment. The developed parallel algorithm includes parallel computing of the global stiffness matrix, the global mass matrix and a parallel subspace iteration method for solving generalized eigenvalue problem. The Linux operation system and parallel virtual machine (PVM) are installed on several microcomputers and a PC network parallel computing environment is constructed. The new algorithm is applied in dynamic analysis of a wing and a rack of a plane, and the parallel implementation of the algorithm is described. The results of the numerical experiments show that the algorithm is highly effective.