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|Title:||Suppression of random vibration in flexible structures using a hybrid vibration absorber|
|Authors:||Tso, Man Ho Harry|
Wong, W. O.
|Subjects:||Global vibration control|
|Source:||Journal of sound and vibration, 27 Feb. 2012, v. 331, no. 5, p. 974-986.|
|Abstract:||A design method is proposed to suppress stationary random vibration in flexible structures using a hybrid vibration absorber (HVA). While the traditional vibration absorber can damp down the vibration mainly at the pre-tuned mode of the primary structure, active damping is generated by the proposed HVA to damp down all resonant modes of interest of the vibrating structure and the spatial average mean square motion of the vibrating structure can be minimized. Only one absorber and one feedback signal are required to achieve global vibration suppression of a flexible structure under stationary random excitation. A special pole-placement controller is designed such that all vibration modes of the flexible structures become critically damped. It is proved analytically that the proposed HVA damps the vibration of the entire structure instead of just the attachment point of the absorber. The proposed optimized HVA is tested on a beam structure and it shows a superior performance on global suppression of broadband vibration in comparison to other published designs of passive and hybrid vibration absorbers.|
|Rights:||©2011 Elsevier Ltd. All rights reserved.|
NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Sound and Vibration. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Sound and Vibration, vol. 331, no. 5 (27 Feb 2012), p. 974-986 , DOI: 10.1016/j.jsv.2011.10.017
|Appears in Collections:||ME Journal/Magazine Articles|
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