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所属单位：航空学院
发表刊物：PHYSICS LETTERS A
关键字：Semi-infinite beam-like phononic crystal Coupled plane wave expansion and finite element method Band structure Applicability and accuracy
摘要：This paper couples the plane wave expansion (PWE) and finite element (FE) methods to calculate the band structures of the semi-infinite beam-like phononic crystals (PCs) with the infinite periodicity in z-direction and finiteness in x-y plane. Explicit matrix formulations are developed for the calculation of band structures. In order to illustrate the applicability and accuracy of the proposed coupled plane wave expansion and finite element (PWE/FE) method to beam-like PCs, several examples are displayed. At first, PWE/FE method is applied to calculate the band structures of the Pb/rubber beam-like PCs with circular and rectangular cross sections, respectively. Then, it is used to calculate the band structures of steel/epoxy and steel/aluminum beam-like PCs with the same geometric parameters. Last, the band structure of the three-component beam-like PC is also calculated by the proposed method. Moreover, all the results calculated by PWE/FE method are compared with those calculated by finite element (FE) method, and the corresponding results are in good agreement. (C) 2017 Elsevier B.V. All rights reserved.
ISSN号：0375-9601
是否译文：否
发表时间：2017-05-03
通讯作者：史治宇