条形阻尼敷设方式对薄板声辐射特性影响的讨论

薄板敷设条形阻尼结构抑制结构振动已有一定的研究基础，其中包括阻尼材料、阻尼的结构尺寸以及基于声子晶体理论的周期条形阻尼结构等对抑制结构振动的作用。但是，目前针对周期性阻尼结构的研究多数集中在多周期平行条形阻尼结构，而对于条形阻尼左右交替偏斜的敷设方式，尚未有明确的提出与运用。本文针对条形阻尼的交替偏斜敷设方式抑制薄板声辐射特性进行了相关研究，证明了与传统条形阻尼平行敷设方式相比，条形阻尼交替偏斜敷设方式能更好地降低薄板声辐射，且其结构中相邻条形阻尼结构存在最优的敷设夹角。

Discussion on effect of damping strips’ laying mode on acoustic radiation performance of plate structure

Certain researches have been carried out on restraining structural vibration of plate structure with damping strips, including the role of damping material, structure dimension and periodic structure for restraining structural vi-bration. However, most of the researches focus on the structure of periodically parallel laid damping strips at present, and there is no clear mechanism research and application of the structures with left-right alternately deflected damping strips. This paper probes into the problem of acoustic radiation by the plate structure with the alternately deflected damping strips. It is proved that this kind of plate structures has better acoustic radiation restraining performance than the plate structure with traditional parallel laid damping strips, and each of the plate structures with the alternately deflected damping strips has a corresponding best laying angle.