结构动力响应精细积分级数解的并行计算  

Parallel computing of series solution of precise integration for structural dynamic response

作　　者：李渊印[1] 金先龙[1] 张晓云[1] 李根国[2] 

机构地区：[1]上海交通大学高性能计算中心,上海200030 [2]上海超级计算中心,上海201203

出　　处：《航空动力学报》2006年第5期879-883,共5页Journal of Aerospace Power

基　　金：国家自然科学基金资助项目(60273048)

摘　　要：讨论了精细积分法的存储需求问题,指出级数解更适合计算大型结构的动力响应分析。研究了精细积分法级数解的并行计算,精细积分法的时程积分公式包含两项,采用第一项串行、第二项并行的并行算法对精细积分级数解实施并行计算,给出了相应的实现流程。讨论了并行算法的负载分配策略,为减少处理器等待初值的时间,对时间步数实施非平均分配。算例表明,并行算法具有好的加速比。Storage requirements of precise integration method were discussed. Series solution of the method suits dynamic response analysis of large-scale structures much better than other methods. Parallel computing of series solution has been researched and implemented. Time integration of precise integration method includes two items. The first item was computed serially and the second item was computed in parallel. Then a corresponding flowchart was given. Load distributed strategies were discussed for the parallel algorithm. The unbalanced distribution of time steps was implemented. The strategy can decrease the waiting time of the initial value for each processor. The final example shows that parallel algorithm of series solution has high speedup.

关 键 词：航空 航天推进系统 动力响应 精细积分 级数解 并行算法 

分 类 号：O322[理学—一般力学与力学基础] TB122[理学—力学]