2022-08-09T11:51:00Zhttps://niigata-u.repo.nii.ac.jp/oaioai:niigata-u.repo.nii.ac.jp:000028372021-03-01T20:23:39Z半無限周期構造における表面波モード解析手法半無限周期構造における表面波モード解析手法Surface Wave Propagation in Half-Planes Having Periodic Structures阿部, 和久笠原, 祐樹紅露, 一寛公益社団法人土木学会本文データは学協会の許諾に基づきJ-Stageから複製したものであるsurface waveperiodic structureFloquet transformA surface wave analysis method is developed for half-plane, periodic structures. The wave propagation is formulated by means of the Floquet transform. By virtue of the method, the dynamic problems in an infinite domain are reduced to that in a unit cell representing the periodicity. An impedance matrix describing the relation between displacements and tractions on the surface is derived from harmonic loading of infinite periodic domain by utilizing the inverse Floquet transform. The dispersion curves are obtained by exploring the eigenvalues of the impedance matrix. To cope with the singularity encountered in the inverse transform, the integration with respect to the wave number is extended to complex number. The feasibility of the developed method is evidenced by dispersion analysis of Rayleigh waves in a homogeneous half-plane. Though some difficulties are found in the analysis for periodic structures, pass and stop bands in lower frequencies can be captured successfully.土木学会2008-08jpnjournal articlehttp://hdl.handle.net/10191/24746https://niigata-u.repo.nii.ac.jp/records/2837https://www.jstage.jst.go.jp/article/journalam1998/11/0/11_0_1031/_pdfAA1249202113459139応用力学論文集応用力学論文集1110311038https://niigata-u.repo.nii.ac.jp/record/2837/files/11_1031-1038.pdfapplication/pdf1.3 MB2019-07-30