RESEARCH PAPERS: Other Vibration and Sound Papers

A Constraint Function Technique for Improved Structural Dynamics

[+] Author and Article Information
J. M. Starkey

Department of Mechanical Engineering, Purdue University, Lafayette, IN

J. E. Bernard

Department of Mechanical Engineering, Iowa State University, Ames, IA

J. Vib., Acoust., Stress, and Reliab 108(1), 101-106 (Jan 01, 1986) (6 pages) doi:10.1115/1.3269292 History: Received June 11, 1985; Online November 23, 2009


A constraint function approach is presented for finding design changes that remove natural frequencies from undesirable frequency bands for lightly damped structures. The technique requires the minimization of a function which becomes smaller when (1) natural frequencies clear out of undesirable bands, and (2) design changes become small. Useful forms of these functions are defined, and the number of possible minima is explored. Graphical intepretations of the constraint functions are given, and an example is included which shows the effects of the parameters which weight these two functions.

Copyright © 1986 by ASME
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