Reduction of the Radiating Sound of a Submerged Finite Cylindrical Shell Structure by Active Vibration Control

Title
Reduction of the Radiating Sound of a Submerged Finite Cylindrical Shell Structure by Active Vibration Control
Authors
최승복
Keywords
underwater cylindrical shell structure; macro fiber composite actuator; optimal controller; structural vibration control; structure-borne noise
Issue Date
2013
Publisher
SENSORS
Series/Report no.
SENSORS; vol.13 startpage 2131 endpage 2147
Abstract
In this work, active vibration control of an underwater cylindrical shell structure was investigated, to suppress structural vibration and structure-borne noise in water. Finite element modeling of the submerged cylindrical shell structure was developed, and experimentally evaluated. Modal reduction was conducted to obtain the reduced system equation for the active feedback control algorithm. Three Macro Fiber Composites (MFCs) were used as actuators and sensors. One MFC was used as an exciter. The optimum control algorithm was designed based on the reduced system equations. The active control performance was then evaluated using the lab scale underwater cylindrical shell structure. Structural vibration and structure-borne noise of the underwater cylindrical shell structure were reduced significantly by activating the optimal controller associated with the MFC actuators. The results provide that active vibration control of the underwater structure is a useful means to reduce structure-borne noise in water.
URI
http://dspace.inha.ac.kr/handle/10505/31260
ISSN
1424-8220
Appears in Collections:
College of Engineering(공과대학) > Mechanical Engineering(기계공학) > Journal Papers, Reports(기계공학 논문, 보고서)
Files in This Item:
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