Parallel Computation of Spectral Stochastic Finite Element Analysis of Three Dimensional Uncertain Wave Field
Parallel Computation of Spectral Stochastic Finite Element Analysis of Three Dimensional Uncertain Wave Field
复制标题
三维不确定波场谱随机有限元分析的并行计算
DOI：
10.2208/journalam.6.789
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
H. Murakami
中科院分区：
文献类型：
--
作者：
R. Honda;H. Murakami
在地震运动模拟中考虑不确定性至关重要。由于地面的材料特性有许多不确定因素。谱随机有限元法（SSFEM）是解决不确定介质中三维波传播问题的强大计算工具。尽管SSFEM比蒙特卡罗模拟更高效，但其计算涉及巨大的矩阵并且需要较长的计算时间。本文提出了一种适用于 SSFEM 与 MPI 并行计算的算法。数值例子表明，所提出的方案可以在不损失精度的情况下减少计算时间。
Consideration of uncertainty is essential in simulation of the earthquake motion. since material properties of the ground has many uncertain factors. Spectral Stochastic Finite ElementMethod (SSFEM) is a powerful computation tool for three dimensional wave propagation problems in the uncertain media. Although SSFEM is more efficient than Monte Carlo simulation, its computation involves hugematrices and requires long computation time. This paper presents an algorithm suitable for parallel computation of SSFEM with MPI. Numerical examples show that the presented scheme can reduce computation timewithout losing accuracy.