π型钢夹层板的隔声特性研究  

Sound insulation performance of π-shaped steel sandwich panel

作　　者：沈超明[1] 蔡昌文 姜文安 王金友 辛振 SHEN Chao-ming;CAI Chang-wen;JIANG Wen-an;WANG Jin-you;XIN Zhen(School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China;Faculty of Civil Engineering and Mechanics,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003 [2]江苏大学土木工程与力学学院,江苏镇江212013

出　　处：《舰船科学技术》2023年第6期64-69,共6页Ship Science and Technology

摘　　要：基于有限元软件,对夹层板结构在平面波垂直入射条件下的隔声效果进行数值仿真,讨论夹层板在不同的面板厚度、夹芯厚度、夹芯高度、夹芯与面板夹角等结构参数下,固有频率和隔声的变化,结果表明在0~800 Hz范围内增加上下面板厚度和夹芯厚度对减振和隔声性能的提升有较好效果;夹芯高度和面板夹角在给定频率范围内较小时有利于振动和隔声效果。通过两端固支梁模型以及隔声量的理论与仿真对比,验证了本文数值方法的有效性。Based on the finite element software,the sound insulation effect of sandwich panel structure under the condition of plane wave vertical incidence is numerically simulated,and the effects of sandwich panel structural parameters such as different panel thickness,sandwich thickness,sandwich height and the angle between sandwich and panel on natural frequency and sound insulation are discussed.The results show that increasing the thickness of upper and lower panels and sandwich in the range of 0~800 Hz has a good effect on the improvement of vibration damping and sound insulation performance.When the sandwich height and the included angle of the panel are small in the given frequency range,it is conducive to vibration and sound insulation effect.The effectiveness of the numerical method in this paper is verified by comparing the theory and Simulation of fixed beam model at both ends and sound insulation.

关 键 词：π型夹层板 隔声量 振动特性 

分 类 号：U663.6[交通运输工程—船舶及航道工程]