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RESEARCH PAPERS

Redesign of Structural Vibration Modes by Finite-Element Inverse Perturbation

[+] Author and Article Information
K. A. Stetson, I. R. Harrison

Instrumentation Lab. (81), United Technologies Research Center, East Hartford, Conn.

J. Eng. Power 103(2), 319-325 (Apr 01, 1981) (7 pages) doi:10.1115/1.3230723 History: Received January 08, 1980; Online November 09, 2009

Abstract

A previously developed technique for redesigning the vibrational properties of structures, by inverting the first-order perturbation analysis of the equations of motion, has been applied to a NASTRAN finite element analysis for plates and shells. The program finds the minimal changes to the thicknesses of the plate elements necessary to effect a given set of changes in the modal frequencies and shapes. Results have been obtained for a flat cantilever plate, a cantilever segment of a cylinder, and for a compressor blade for a jet engine.

Copyright © 1981 by ASME
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