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Title :中間層を有する周期複合材の弾性波動解析
Title alternative :Elastic Wave Propagation in Periodic Composites with a Layer
Authors :阿部, 和久
中山, 悠
紅露, 一寛
Publisher :土木学会
Issue Date :Aug-2010
Journal Title :応用力学論文集
Volume :13
Start Page :1041
End Page :1048
ISSN :1345-9139
Abstract :Elastic wave propagation is analyzed for periodic composites with a layer possessing different periodicity. To achieve this, a numerical method is developed based on the finite element approach. The problem under consideration is stated in the context of the equation of motion for a repetitive unit of the layer. For that sub-region, unknowns on the lower and upper boundaries are described by the aid of impedance matrices. The impedance matrix of a periodic half-plane is composed of eigenvectors of the transfer matrix of a unit cell representing the periodicity. The method is applied to the transmission of incident waves through the periodic layer consisting of a matrix and circular inclusions with square arrangement. It is found that the composite layer with only a few stories can exhibit the stopband at some frequencies. The band structure of the layer can be deduced precisely by dispersion analysis of an infinite field having the identical periodicity of the layer.
Keywords :elastic wave
periodic structure
composite layer
transmission
Type Local :学術雑誌論文
Language :jpn
Format :application/pdf
URI :http://hdl.handle.net/10191/24745
fullTextURL :http://dspace.lib.niigata-u.ac.jp/dspace/bitstream/10191/24745/1/13_1041-1048.pdf
Relation :http://library.jsce.or.jp/jsce/open/00561/2010/13-1041.pdf
Rights :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土木学会のホームページから複製したものである
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/10191/24745