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Proceedings Paper

Experimental and analytical studies of a novel semi-active piezoelectric coulomb damper
Author(s): Ozlem Durmaz; William W. Clark; David S. Bennett; Jeffrey S.N. Paine; Marc N. Samuelson
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Paper Abstract

This paper presents an analytical and experimental study of a novel, patent pending, semi-active piezoelectric coulomb damper. A piezoelectric stack actuator is used to modulate the friction force of a passive coulomb damper resulting in high ranges of controllable friction forces. First, the piezoelectric coulomb damper is introduced and its method of operation is described. Experimental results are presented that reveal the static and dynamic frictional force behavior of the damper. An analytical model is developed and the results are compared with the experimental data. The force range of the piezoelectric coulomb damper was observed to be between approximately 890 N to 11 kN. It has a total stroke of +/- 13 mm and requires less than 0.5 W power. For a relatively small volume device, 10 cm x 6.3 cm x 6.3 cm, it is able to provide a large range of forces exceeding the capabilities of many other types of semi-active dampers.

Paper Details

Date Published: 27 June 2002
PDF: 16 pages
Proc. SPIE 4697, Smart Structures and Materials 2002: Damping and Isolation, (27 June 2002); doi: 10.1117/12.472661
Show Author Affiliations
Ozlem Durmaz, Univ. of Pittsburgh (United States)
William W. Clark, Univ. of Pittsburgh (United States)
David S. Bennett, Dynamic Structures and Materials, LLC (United States)
Jeffrey S.N. Paine, Dynamic Structures and Materials, LLC (United States)
Marc N. Samuelson, Dynamic Structures and Materials, LLC (United States)

Published in SPIE Proceedings Vol. 4697:
Smart Structures and Materials 2002: Damping and Isolation
Gregory S. Agnes, Editor(s)

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