周期复合板的带隙特性和辐射噪声衰减特性分析

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Abstract The band gap and attenuation characteristics of sound radiation for periodic compound plate are investigated. The coupled equations are established by transfer matrix method, and radiation sound is calculated by radiation impedance through meshing the plate into equal squares. Calculations show that there are stop bands for the radiation sound, and the level of sound radiation is greatly suppressed between the frequency ranges of the stop bands. The influence of the material and geometric parameters on band gap is discussed.

Key words： periodic compound plate radiation sound band gap transfer matrix

Received: 08 March 2016 Published: 25 May 2017

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	Articles by authors
	XU Qing1
	ZHANG Jun-jie2

Cite this article:

XU Qing1,ZHANG Jun-jie2. Research on the band gap and attenuation characteristic of sound radiation for periodic compound plate[J]. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(11): 188-191.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2017/V36/I11/188

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