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论文类型：期刊论文

发表时间：2016-11-01

发表刊物：SOIL DYNAMICS AND EARTHQUAKE ENGINEERING

收录刊物：SCIE、EI、Scopus

卷号：90

页面范围：494-509

ISSN号：0267-7261

关键字：Scaled boundary finite element method (SBFEM); Acceleration unit-impulse response matrix; Transmitting boundary; Layered soil; Dynamic soil-structure interaction

摘要：An efficient transmitting boundary (TB) is developed for transient analysis of scalar wave as well as vector wave motion in layered media of constant depth, it is suited for both waves propagating out to infinity and for evanescent waves. The TB is formulated based on the acceleration unit-impulse response, such that singular term does not present, which results in simplifying the solution. The scaled boundary finite element method (SBFEM) is employed for the derivation. For numerical implementation, the very efficient scheme proposed by Radmanovic and Katz is applied for the solution of the acceleration unit-impulse response matrix and the evaluation of interaction forces, significant reduction of computational effort can be achieved. In comparison with the various schemes of TBs available in the literature, the proposed approach has following advantages: it is accurate, the computational cost is less and stability of the solution can be ensured. The extension to the case of orthogonal anisotropic media can be performed without extra effort.