An Accurate and Efficient Method for Dynamic Analysis of Two-Dimensional Periodic Structures

An Accurate and Efficient Method for Dynamic Analysis of Two-Dimensional Periodic Structures
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一种准确高效的二维周期性结构动力分析方法

DOI:
10.1142/s1758825116500137
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发表时间:
2016-04
影响因子:
3.5
通讯作者:
Williams F. W.
Williams F. W.
中科院分区:
工程技术3区
文献类型:
--
作者:
Gao Q.;Zhang H. W.;Zhong W. X.;Howson W. P.;Williams F. W.

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本文提出了一种准确有效的方法来分析二维(2D)周期性结构的动态响应。分析了相应矩阵指数的代数结构,并根据其特殊结构,提出了一种准确、高效的计算方法。使用精确积分方法(PIM)保持精度,并且利用结构的周期特性和动态系统的能量传播特征在计算工作中实现了很高的效率。将所提出的方法与传统的 Newmark 和 Runge-Kutta (R-K) 方法进行比较,结果表明该方法准确、高效且内存需求极其节约。
In this paper, an accurate and efficient method is presented for analyzing the dynamic response of two-dimensional (2D) periodic structures. The algebraic structure of the corresponding matrix exponential is analyzed and, based on its special structure, an accurate and efficient method for its computation is proposed. Accuracy is maintained using the precise integration method (PIM), and great efficiency is achieved in the computational effort using the periodic properties of the structure and the energy propagation features of the dynamic system. The proposed method is compared with the conventional Newmark and Runge–Kutta (R–K) methods, and it is shown to be accurate, efficient and extremely frugal in its memory requirements.
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