摘要
夹层板作为一种新型结构,具有设计性强、重量轻、比刚度高、减振隔声性能好等优点,已被应用于各种工程结构。然而,其夹层结构形式种类繁多,对复杂夹层结构的隔声性能进行理论分析比较困难,亟需开展新的近似分析方法。本文针对船用C型夹层板,基于弹簧、扭簧与集中质量的等效方法,建立C型夹层板的声振耦合控制方程,利用空间谐波展开法,推导C型夹层结构的传声损失表达式,讨论夹层板系统参数对结构隔声性能的影响规律。结果表明,材料属性与夹层板结构面板的厚度对C型夹层板结构隔声性能的影响较大。同时,通过有限元仿真,验证了理论分析的有效性。
Sandwich plates,as a new structure,have the advantages of strong design,light weight,high specific stiffness,good performance of vibration reduction and sound insulation,and have been used in various engineering structures.However,there are many types of sandwich structures,and it is difficult to theoretically analyze the sound insulation performance of complex sandwich structures.New approximate analysis methods are urgently needed.In this paper,based on the equivalent method of spring,torsion spring and concen-trated mass,the sound-vibration coupling control equation of a C-type sandwich panel was established for the marine C-type sandwich panel.Using the spatial harmonic expansion method,the expression of the sound transmission loss of the C-shaped sandwich structure was derived.The influence of the system parameters of the sandwich panel on the sound insulation performance of the structure was discussed.The results show that the material properties and the thickness of the sandwich panel structure have greater influence on the sound insulation performance of the C-type sandwich panel structure.The finite element simulation was used to verify the validity of the theoretical analysis.
作者
刘昆
房钰斌
姜文安
高宇
LIU Kun;FANG Yu-bin;JIANG Wen-an;GAO Yu(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)
出处
《船舶力学》
EI
CSCD
北大核心
2024年第9期1451-1462,共12页
Journal of Ship Mechanics
基金
国家自然科学基金资助项目(52171311,52271279)。
关键词
C型夹层板
空间谐波展开法
隔声
有限元法
C-type sandwich panel
space harmonic expansion method
sound insulation
FEM
