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.
徐青1，张俊杰2. 周期复合板的带隙特性和辐射噪声衰减特性分析[J]. 振动与冲击, 2017, 36(11): 188-191.
XU Qing1, ZHANG Jun-jie2. Research on the band gap and attenuation characteristic of sound radiation for periodic compound plate. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(11): 188-191.
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