【摘要】 基于有限元方法对V型夹层板结构的水下声辐射性能进行了数值模拟研究。在保证结构质量不变的前提下,改变夹芯层单元尺寸,进行声学性能分析,寻找最优尺寸,得出如下结论:在低频段,V型夹层板的辐射声压随单元边长的增加而增加,随单元厚度的增加先减小再增大;在高频段,结构的辐射声压随边长和厚度的增大都减小;单元角度的变化对V型夹层板水下声辐射影响不大,但从整个频段上来说,存在一个最优的夹角使其声学性能最好。该研究对V型夹层板的声学优化设计具有一定的参考价值。更多还原

【Abstract】 This paper studies underwater acoustic radiation performance of V-type sandwich panel based on finite element method.The cell size of the core layer is changed,but with an invariable structural quality,to find the optimal size based on the acoustic performance analysis.It is concluded that in low frequency band,the acoustic radiation pressure of V-type sandwich panel increases with increasing edge length,but first decreases and then increases with increasing thickness;whereas in high frequency band,the structural acoustic radiation decreases with increasing edge length and thickness.The effect of the change of cell angle is marginal on the underwater acoustic radiation of V-shape sandwich panel,but there is an optimal angle to achieve the best acoustic performance in the whole frequency band.This study could provide certain reference for the optimization design of V-type sandwich panel.更多还原