RESEARCH PAPERS: Design & Development Problems in Vibrations

Piezoelectric Shaker for Simulating Earthquakes

[+] Author and Article Information
J. G. Canclini

Air Logistics Command, Kelly AFB, Tex. 78241

J. M. Henderson

University of California, Davis, Calif. 95616

J. Vib., Acoust., Stress, and Reliab 105(1), 11-16 (Jan 01, 1983) (6 pages) doi:10.1115/1.3269055 History: Received October 08, 1980; Online November 23, 2009


A centrifuge can theoretically simulate gravity-induced stress on earthen structures at a reduced geometric scale through centrifuge loading. These scaling laws show the usefulness of the centrifuge to test large structures of a size that cannot be tested practically in any other fashion. Seven possible shaker designs were considered. The paper presents a description of the piezoelectric shaker chosen and its development for a 5-g ton capacity centrifuge. A piezoelectric material deforms when subjected to an electric field and this principle was used to drive the shaker. The prototype tests showed the feasibility of simulating and controlling an earthquake motion by using the piezoelectric system, the presence of mechanical resonance at some operating frequencies, and the decline of acceleration produced by the piezoelectric system with increasing rpm. This system shows promise for adaption to a larger payload system.

Copyright © 1983 by ASME
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