Active control of low-frequency sound radiation by cylindrical shell with piezoelectric stack force actuators

被引：28

作者：

Cao, Yin ^{[1
]}

Sun, Hongling ^{[1
]}

An, Fengyan ^{[1
]}

Li, Xiaodong ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Noise & Vibrat Res, Inst Acoust, Beijing 100190, Peoples R China

来源：

JOURNAL OF SOUND AND VIBRATION | 2012年 / 331卷 / 11期

基金：

中国国家自然科学基金;

关键词：

SUBMARINE; DESIGN;

D O I：

10.1016/j.jsv.2012.02.001

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A novel active control method of sound radiation from a cylindrical shell under axial excitations is proposed and theoretically analyzed. This control method is based on a pair of piezoelectric stack force actuators which are installed on the shell and parallel to the axial direction. The actuators are driven in phase and generate the same forces to control the vibration and the sound radiation of the cylindrical shell. The model considered is a fluid-loaded finite stiffened cylindrical shell with rigid end-caps and only low-frequency axial vibration modes are involved. Numerical simulations are performed to explore the required control forces and the optimal mounting positions of actuators under different cost functions. The results show that the proposed force actuators can reduce the radiated sound pressure of low-frequency axial modes in all directions. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：2471 / 2484

页数：14

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