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RESEARCH PAPERS

Torsional Vibration Control of a Shaft Through Active Constrained Layer Damping Treatments

[+] Author and Article Information
I. Y. Shen

Department of Mechanical Engineering, University of Washington, Seattle, WA 98195-2600

Weili Guo

ALMO Manifold & Tooling, Warren, MI 48089

Y. C. Pao

Department of Engineering Mechanics, University of Nebraska-Lincoln, Lincoln, NE 68588-0347

J. Vib. Acoust 119(4), 504-511 (Oct 01, 1997) (8 pages) doi:10.1115/1.2889752 History: Received November 01, 1994; Online February 26, 2008

Abstract

This paper proposes a hybrid damping design to control torsional vibration of a shaft with a circular cross section through use of actively constrained layer (ACL) damping treatments proposed by Baz (1993) and Shen (1993, 1994a). The ACL damping treatment consists of a piezoelectric constraining layer and a viscoelastic shear layer wrapping around the shaft in the form of a helix. In addition, the angular displacement of the shaft is fed back to regulate the helical motion of the piezoelectric constraining layer. The equation of motion of this design is derived, and its stability and controllability are discussed. Finally, numerical examples show that this ACL design can reduce torsional vibration of a shaft. A sensitivity analysis shows that ACL is most effective in suppressing those modes with significant torsional vibration response. Stability, in general, is not a critical factor in designing ACL systems, because the piezoelectric strain of the constraining layer at the threshold of instability is too large to occur.

Copyright © 1997 by The American Society of Mechanical Engineers
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