2024-03-28T16:21:47Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00002835
2022-12-15T03:36:01Z
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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
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
An Enhancement of Surface Wave analysis Method for Periodic Half-Planes
阿部, 和久
笠原, 祐樹
紅露, 一寛
公益社団法人土木学会
surface wave
periodic structure
transfer matrix
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.
土木学会
2009-08
jpn
journal article
http://hdl.handle.net/10191/26507
https://niigata-u.repo.nii.ac.jp/records/2835
AA12492021
13459139
応用力学論文集
応用力学論文集
12
1013
1020
https://niigata-u.repo.nii.ac.jp/record/2835/files/12_1013-1020.pdf
application/pdf
827.0 kB
2019-07-30