期刊
PHYSICS LETTERS A
卷 379, 期 22-23, 页码 1449-1456出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2015.01.037
关键词
Periodic plate; Flexural wave; Stop band; Enhancement
资金
- National Natural Science Foundation of China [10902123, 11372346, 51075392, 51275519]
The band structure and enhancement of flexural wave stop bands in a 2D periodic plate are investigated. A unified method for analysing and designing the stop band of the plates with various attached structures is proposed. The effect of attached structures is considered based on their equivalent parameters (added equivalent mass and equivalent moment of inertia). The influences of the equivalent parameters on the band structures are studied. Three cases are considered: adding pure equivalent mass, pure equivalent moment of inertia and the combination of these two. The stop bands are enhanced via the multi interaction between the host plate and the attached structure. The enhancement pattern is determined, and several ways to obtain a wider combined stop band are presented. The frequency response functions of corresponding finite periodic plates are calculated to verify the stop bands and their enhancement in a number of typical cases. (C) 2015 Elsevier B.V. All rights reserved.
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