全部

力学与实践 ›› 2009, Vol. 31 ›› Issue (6): 46-49.doi: 10.6052/1000-0879-lxysj2009-094

• 应用研究 • 上一篇    下一篇

面板堆石坝三维非线性有限元并行计算

胡峥嵘,李俊杰   

  1. 大连理工大学土木水利学院
  • 收稿日期:2009-03-09 修回日期:2009-04-14 出版日期:2009-12-10 发布日期:2011-09-06
  • 通讯作者: 胡峥嵘 E-mail:hzhr1983@126.com

PARALLEL COMPUTION FOR CONCRETE-FACED ROCKFILL DAM USING 3-D NONLINEAR FEM

HU Zheng-Rong 胡峥嵘,   

  • Received:2009-03-09 Revised:2009-04-14 Online:2009-12-10 Published:2011-09-06
  • Contact: HU Zheng-Rong 胡峥嵘 E-mail:hzhr1983@126.com

摘要: 面板堆石坝的三维非线性有限元分析,对并行计算提出了较高的要求. 在建模阶段挖掘出模 型内在的并行性,由相邻坝段构成子结构,既方便灵活又能满足区域分解法的要求. 编制了 适用于机群的并行多波前法计算程序,并应用于西龙池下库沥青混凝土面板堆石坝的有限元 数值分析,其计算结果和串行完全相同,通过对加速比和并行效率进行分析,结果表明采用 并行多波前法求解面板堆石坝的三维非线性有限元问题有效且算法简单,易于实现,无需辅 助的任务分配程序.

Abstract: Parallel computations are needed for effectively analyzing the concrete-faced rockfill dam using 3D nonlinear finite element method. Parallelism is to be found during modeling stage and some neighbouring dam sections are made into a substructure. It is convenient and can satisfy the demands of the domain decomposition. A parallel multi-frontal code for COW is developed and applied to the numerical analysis of Xilongchi lower reservoir dam, an asphalt concrete faced rockfill dam, with the same result as in a serial calculation. From the speedup ratios and parallel efficiency, it is shown that the parallel multi-frontal method can be used to reliably analyze the concrete-faced rockfill dam and it is simple and easy to realize, without requiring an accessorial task assignment subroutine.