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结构动力响应精细积分级数解的并行计算
引用本文:李渊印,金先龙,张晓云,李根国.结构动力响应精细积分级数解的并行计算[J].航空动力学报,2006,21(5):879-883.
作者姓名:李渊印  金先龙  张晓云  李根国
作者单位: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
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.

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
文章编号:1000-8055(2006)05-0879-05
收稿时间:8/8/2005 12:00:00 AM
修稿时间:2005年8月8日

Parallel computing of series solution of precise integration for structural dynamic response
LI Yuan-yin,JIN Xian-long,ZHANG Xiao-yun and LI Gen-guo.Parallel computing of series solution of precise integration for structural dynamic response[J].Journal of Aerospace Power,2006,21(5):879-883.
Authors:LI Yuan-yin  JIN Xian-long  ZHANG Xiao-yun and LI Gen-guo
Institution:High Performance Computing Center, Shanghai Jiaotong University, Shanghai 200030, China;High Performance Computing Center, Shanghai Jiaotong University, Shanghai 200030, China;High Performance Computing Center, Shanghai Jiaotong University, Shanghai 200030, China;Shanghai Supercomputer Center, Shanghai 201203, China
Abstract: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.
Keywords:aerospace propulsion system  dynamic response  precise integration  series solution  parallel algorithm
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