On Steady-State Harmonic Vibrations of Nonlinear Systems With Many Degrees of Freedom

[+] Author and Article Information
W. M. Kinney

Technical Staff, Bellcomm, Inc., Washington, D. C.

R. M. Rosenberg

Division of Mechanical Engineering, University of California, Berkeley, Calif.

J. Appl. Mech 33(2), 406-412 (Jun 01, 1966) (7 pages) doi:10.1115/1.3625057 History: Received April 02, 1965; Online September 15, 2011


A nonlinear spring-mass system with many degrees of freedom, and subjected to periodic exciting forces, is examined. The class of admissible systems and forcing functions is defined, and a geometrical method is described for deducing the steady-state forced vibrations having a period equal to that of the forcing functions. The methods used combine the geometrical methods developed earlier in the problem of normal mode vibrations and Rauscher’s method. The stability of these steady-state forced vibrations is examined by Hsu’s method. The results are applied to an example of a system having two degrees of freedom.

Copyright © 1966 by ASME
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