Simulation Analysis of Cylindrical Shell Cavity Noise with Melamine Foam Lining

被引：2

作者：

Qi, Menghui ^{[1
]}

Li, Bin ^{[2
]}

Yan, Shilin ^{[1
]}

Yan, Qinghua ^{[2
]}

He, Qiyu ^{[2
]}

机构：

[1] Wuhan Univ Technol, Hubei Key Lab Theory & Applicat Adv Mat Mech, Wuhan 430070, Hubei, Peoples R China

[2] Wuhan Polytech Univ, Sch Mech Engn, Wuhan 430023, Hubei, Peoples R China

来源：

SHOCK AND VIBRATION | 2021年 / 2021卷

关键词：

STRUCTURAL-ACOUSTIC OPTIMIZATION; SOUND INSULATION; COMPOSITE; TRANSMISSION;

D O I：

10.1155/2021/6646596

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

To solve the problem of the harsh midlow frequency noise of rocket fairing, the cylindrical section of the protective precision instrument fairing is simplified as cylindrical shells, and different lining strategies of melamine foam (MF) are studied experimentally and numerically. Based on Virtual.Lab Acoustic software, a finite element model of the cylindrical cavity is established, and the correctness is verified by comparison with the measured data. On that basis, the influences of the lining position of different thickness MF on the noise reduction of cylindrical shells are investigated. It is shown that the thickness and location of the laying material have a significant effect on the noise reduction at the same specific gravity.

引用

页数：9

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