Bandgap properties in simplified model of composite locally resonant phononic crystal plate

被引：20
|
作者：
Qian, Denghui [1 ]
Shi, Zhiyu [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Aerosp Engn, State Key Lab Mech & Control Mech Struct, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China
来源：
PHYSICS LETTERS A | 2017年 / 381卷 / 40期
基金：
中国国家自然科学基金;
关键词：
Bandgap property; Simplified model; Phononic crystal plate; Plane wave expansion; SONIC MATERIALS; TRANSMISSION; PLANE; GAPS;
D O I：
10.1016/j.physleta.2017.08.058
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
This paper extends the traditional plane wave expansion (PWE) method to calculate the band structure of the proposed simplified model of composite locally resonant phononic crystal (LRPC) plate. Explicit matrix formulations are developed for the calculation of band structure. In order to illustrate the accuracy of the results, the band structure calculated by PWE method is compared to. that calculated by finite element (FE) method. In addition, in order to reveal the bandgap properties, band structures of the "spring mass" simplified model of stubbed-on LRPC plate, "spring torsional spring mass" simplified model of stubbed-on LRPC plate and "spring torsional spring mass" simplified model of composite LRPC plate with and without the viscidity considered are presented and investigated in detail. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：3505 / 3513
页数：9
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