Research Papers

Concerning Subharmonic Oscillations Which May Exist in Nonlinear Systems Having Odd Restoring Forces

[+] Author and Article Information
C. A. Ludeke

Graduate School, University of CincinnatiControls Section, FPLD Department, General Electric Company

William Pong

Baldwin Piano Company

J. Basic Eng 81(1), 37-40 (Mar 01, 1959) (4 pages) doi:10.1115/1.4008355 History: Received October 07, 1955; Published March 01, 1959; Online February 20, 2019


An experimental study is made of subharmonic oscillations in systems having |θ|θ, θ3, and |θ3|θ as the nonlinear terms in the restoring force; θ represents displacement. In a system with a restoring force θ3 the subharmonic of order one third was the only subharmonic observed. In a system with |θ|θ or |θ3|θ as the restoring force, subharmonics of order one half and one third were observed.

Copyright © 1959 by ASME
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