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Shock and Vibration
Volume 2014, Article ID 385264, 17 pages
Research Article

Acoustic and Vibration Control for an Underwater Structure under Mechanical Excitation

1Institute of Noise & Vibration, Naval University of Engineering, Wuhan 430033, China
2Department of Engineering Mechanics, College of Mechanical & Vehicle Engineering, Hunan University, Changsha 410082, China

Received 28 May 2013; Revised 12 March 2014; Accepted 12 March 2014; Published 30 April 2014

Academic Editor: Hongyi Li

Copyright © 2014 Shi-Jian Zhu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Acoustic and vibration control for an underwater structure under mechanical excitation has been investigated by using negative feedback control algorithm. The underwater structure is modeled with cylindrical shells, conical shells, and circular bulkheads, of which the motion equations are built with the variational approach, respectively. Acoustic property is analyzed by the Helmholtz integration formulation with boundary element method. Based on negative feedback control algorithm, a control loop with a coupling use of piezoelectric sensor and actuator is built, and accordingly some numerical examples are carried out on active control of structural vibration and acoustic response. Effects of geometrical and material parameters on acoustic and vibration properties are investigated and discussed.