Effects of Core Thickness and Vacuum Degree on Sound Insulation Properties of Honeycomb Sandwich

被引：0
|
作者：
Xu H. [1 ]
Liu T. [1 ]
Lei Y. [1 ]
机构：
[1] School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an
来源：
| 1600年 / Shanghai Jiaotong University卷 / 51期
关键词：
Core thickness; Honeycomb sandwich structure; Sound insulation property; Vacuum degree;
D O I：
10.16183/j.cnki.jsjtu.2017.09.008
中图分类号：
学科分类号：
摘要：
The sound insulation properties of honeycomb sandwich structure with different core thicknesses and cavity vacuum degrees of cavities have been studied in the paper. The theoretical analyses of the honeycomb sandwich in vertical incident wave are performed. The finite element models of honeycomb sandwich and double plates are established by using finite element software. The numerical analysis results show that the sound insulation performance of honeycomb sandwich in different frequency bands can be improved with increasing the vacuum degree and core thickness, especially in the middle- and high-frequency bands. The core thickness and vacuum degree chosen by finite element method can achieve the requirements of sound insulation in the process of designing and applying of honeycomb sandwich for sound insulation structures to deal with different noise spectrum requirements. The conclusions drawn in this paper can be used to guide the future design of low-weight thin sound insulation structure. © 2017, Shanghai Jiao Tong University Press. All right reserved.
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页码：1071 / 1075
页数：4
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