Clamped Beam Parametric Amplifer

[+] Author and Article Information
K. Eisinger

Marine Systems, The Boeing Company, P.O. Box 3707, MS 61-35, Seattle, Wash. 98124

H. C. Merchant

Department of Mechanical Engineering, 204 MEB, FU-10, University of Washington, Seattle, Wash. 98195

J. Appl. Mech 46(1), 197-202 (Mar 01, 1979) (6 pages) doi:10.1115/1.3424496 History: Received February 01, 1978; Revised August 01, 1978; Online July 12, 2010


Parametric amplification of the transverse motion of a uniform, clamped beam with a center mass is investigated. The system inputs are a transverse harmonic motion and a compressive load (with harmonic and static components) applied at the beam supports. Secondary parametric amplification is considered by the application of end-loads at frequencies near the system characteristic frequency and transverse support motions at frequencies much lower than the characteristic frequency. An example of an inertial sensing element for a gravimeter is presented.

Copyright © 1979 by ASME
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