Pendulum With a Rotational Vibration

[+] Author and Article Information
B. A. Schmidt

Department of Mathematics, Central Michigan University, Mt. Pleasant, Mich. 48859

J. Appl. Mech 48(1), 200-203 (Mar 01, 1981) (4 pages) doi:10.1115/1.3157574 History: Received May 01, 1980; Revised September 01, 1980; Online July 21, 2009


This work involves a pendulum made up of a mass, a pivoted weightless rod, and a spring. The mass is constrained to maintain its axial position on the rod, but is allowed to move rotationally on the rod under the influence of the spring. The pivot is vibrated rotationally at a high frequency about a vertical axis. It is found that, in some conditions, the vibration causes new stable equilibrium positions.

Copyright © 1981 by ASME
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