四边形蜂窝夹层板声学结构优化设计研究

Acoustic-structure Optimization Design of Quadrilateral Honeycomb Sandwich Panel

论文以某舰船的双层底板架单元为基础,在保证夹层板总质量和主尺寸与原板架相同的前提下,建立36种不同尺寸的四边形蜂窝夹层板模型,利用仿真算法进行声学性能分析,得出以下结论:随着夹层单元边长的变化,声辐射功率级先增高后降低,存在着一个最大值;夹层比例的增大使声辐射功率级有所降低,但会引起更多的共振峰。该研究对四边形蜂窝夹层板的声学优化设计具有一定的参考价值。

Based on bottom frame between in the middle of a ship,a series of quadrilateral honeycomb sandwich plate model are established with different sandwich weights,on condition that the mass and main dimensions of the sandwich are the same as the original structures.It is concluded that in low frequency band,sound radiation power firstly increases and then decreases along with the increasing edge length,which has a maximum value.With the increasing proportion of the sandwich,sound radiation power decreases,but causes much more resonance hump.This study can provide certain reference for the optimization design of quadrilateral honeycomb sandwich panel.