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

Yin Cao, Hongling Sun*, Fengyan An, Xiaodong Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2471-2484
Number of pages14
JournalJournal of Sound and Vibration
Volume331
Issue number11
DOIs
Publication statusPublished - 21 May 2012
Externally publishedYes

Fingerprint

Dive into the research topics of 'Active control of low-frequency sound radiation by cylindrical shell with piezoelectric stack force actuators'. Together they form a unique fingerprint.

Cite this