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Article

Constrained-layer Damping Applied to DCJ Vibration Isolation Design

1Department of Naval Architecture and Ocean Engineering, National Kaohsiung Marine University


Journal of Mechanical Design and Vibration. 2017, Vol. 5 No. 1, 21-26
DOI: 10.12691/jmdv-5-1-3
Copyright © 2017 Science and Education Publishing

Cite this paper:
G. M. Luo. Constrained-layer Damping Applied to DCJ Vibration Isolation Design. Journal of Mechanical Design and Vibration. 2017; 5(1):21-26. doi: 10.12691/jmdv-5-1-3.

Correspondence to: G.  M. Luo, Department of Naval Architecture and Ocean Engineering, National Kaohsiung Marine University. Email: gmluo@webmail.nkmu.edu.tw

Abstract

A dual piezoelectric cooling jet (DCJ) is an innovative cooling device that uses piezoelectric materials to generate high-speed vibrations, thereby causing changes in the flow field to achieve heat exchange. Despite its high cooling efficiency, a DCJ transfers vibrations through its supporting base to its peripheral devices. To attenuate vibrations from DCJs, this study employed constrained-layer damping (CLD)-a technique for suppressing vibrations-to develop a base for cooling devices and to propose a C-DCJ model. ANSYS simulation of the vibrations of a DCJ and the C-DCJ suggested that, under the same vibration conditions and with the same levels of cooling efficiency, the amplitude and acceleration of the base on the C-DCJ were 30%–50% lower than that on the DCJ. Thus, the proposed C-DCJ effectively isolated vibration transfer.

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