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Title :半無限周期構造を対象とした表面波モード解析手法の改善
Title alternative :An Enhancement of Surface Wave analysis Method for Periodic Half-Planes
Authors :阿部, 和久
笠原, 祐樹
紅露, 一寛
Publisher :土木学会
Issue Date :Aug-2009
Journal Title :応用力学論文集
Volume :12
Start Page :1013
End Page :1020
ISSN :1345-9139
Abstract :A numerical method is presented for the surface wave analysis of half-plane having a periodic structure. In order to grope out the dispersion curves of surface waves over a wide region, an improvement in the computational efficiency is attempted. This is realized by employing a transfer matrix for nodal vectors between the lower and the upper boundaries of a unit cell. Waves transmitting in the half-plane toward the far field are composed of eigenvectors of the transfer matrix. Exploration of the surface wave modes in a wavenumber-frequency domain can be reduced to an eigenvalue problem of a matrix consisted of the above eigenvectors. A numerical procedure to calculate the wave motion of surface wave modes is also constructed. The developed method is applied to the dispersion analysis of periodic half-planes. The validity of the proposed method is proved through those analyses, and characteristics of the dispersion curves and the wave motion are discussed.
Keywords :surface wave
periodic structure
transfer matrix
Type Local :学術雑誌論文
Language :jpn
Format :application/pdf
URI :http://hdl.handle.net/10191/26507
fullTextURL :http://dspace.lib.niigata-u.ac.jp/dspace/bitstream/10191/26507/1/12_1013-1020.pdf
Rights :公益社団法人土木学会
Appears in Collections:10 査読済論文 = Postprint

Please use this identifier to cite or link to this item: http://hdl.handle.net/10191/26507