Parallel processing of central difference transient analysis for three-dimensional nonlinear framed structures
Parallel processing of central difference transient analysis for three-dimensional nonlinear framed structures
复制标题
三维非线性框架结构中心差分瞬态分析的并行处理
DOI：
10.1002/cnm.1630050107
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
J. Abel
中科院分区：
文献类型：
--
作者：
J. Hajjar;J. Abel
中心差分算法是一种简单但有效的时间积分算法，适合并行处理。本文讨论了三维框架结构全非线性瞬态动态分析方法的开发和实现。提出了一种数据结构，其中每个时间步仅需要一次最近邻通信，并且并行实现可能产生很少的开销。由于这种显式方法仅在条件下稳定，框架结构自振频率的巨大差异表明中心差分分析对于具有短时荷载的应用更有用。给出的示例表明该算法在分布式内存、粗粒度并行处理环境中实现时的加速和效率。
The central difference algorithm is a simple but effective time-integration algorithm suitable for parallel processing. This paper discusses the development and implementation of the method for the fully nonlinear, transient dynamic analysis of three-dimensional framed structures. A data structure is presented in which only one nearest-neighbor communication is required per time step, and potentially little overhead is incurred for the parallel implementation. Because this explicit method is only conditionally stable, the large disparity of natural vibrational frequencies of framed structures indicates that central difference analysis is more useful for applications having short-duration loading. An example is presented indicating the speed-up and efficiency of the algorithm when implemented in a distributed-memory, coarse-grained parallel processing environment.