基座含阻振质量的动力舱段全频段声振特性数值研究

从工程应用的角度出发,将刚性阻振质量带引入动力舱段基座结构的刚性隔振设计中。联合应用声固耦合法和统计能量法,基于ABAQUS/VA ONE,对基座结构含阻振质量带的动力舱段减振降噪效果进行了全频段数值分析。数值研究了阻振质量截面尺寸、截面形状参数、布置位置对基座隔振特性的影响规律,验证了基座刚性阻振质量隔振设计的有效性,旨在为船舶结构声学设计提供参考。

Numerical research on the full-band vibration and sound radiation of power cabin base with vibration isolation masses

From the engineering application point of view,the rigid vibration isolation masses are introduced into the rigid vibration isolation design of the base structure of power cabin.With the combination of acoustic-structural coupled method and statistical energy analysis,the vibration and sound radiation reduction effect of vibration isolation masses located in the power cabin base structure is researched numerically based on ABAQUS/VA ONE.The influences of vibration isolation mass cross-section size,cross-section shape parameters and location on the isolation performance of base structure are discussed.Furthermore,the effectiveness of vibration isolation design of the rigid vibration isolation masses of the base structure is validated.This article could provide reference for the acoustic design of typical hull structures.