Steady-State Undamped Vibrations of a Class of Nonlinear Discrete Systems

[+] Author and Article Information
P. R. Sethna

Department of Aeronautical Engineering, University of Minnesota, Minneapolis, Minn.

J. Appl. Mech 27(1), 187-195 (Mar 01, 1960) (9 pages) doi:10.1115/1.3643898 History: Received February 05, 1959; Online September 16, 2011


Steady-state vibrations of a class of nonlinear discrete systems with an arbitrary number of degrees of freedom are studied. The co-ordinates of the system are first transformed to the principal co-ordinates corresponding to the linear part of the system. A perturbation scheme is used to obtain the solutions. Some special effects of the ratios of the linear natural frequencies on the qualitative nature of the solutions are demonstrated. Solutions are obtained for some specific problems and the results are checked against those obtained from an analog-type computer.

Copyright © 1960 by ASME
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