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RESEARCH PAPERS

Approximate Nonstationary Random Vibration Analysis for MDOF Systems

[+] Author and Article Information
C. G. Bucher

Institute of Engineering Mechanics, University of Innsbruck, A-6020 Innsbruck, Austria

J. Appl. Mech 55(1), 197-200 (Mar 01, 1988) (4 pages) doi:10.1115/1.3173629 History: Received September 08, 1986; Online July 21, 2009

Abstract

An approximate method for nonstationary random vibration analysis is presented. This method utilizes properties of the stationary solution for simplifying the analysis. This approach has previously been applied by the author to linear and nonlinearly damped SDOF systems. In the present paper the concept is extended to linear MDOF systems and applied to nonstationary earthquake-type loading. Comparisons with available exact solutions show very good agreement in numerical results with the additional benefit of reducing computer time by more than one order of magnitude.

Copyright © 1988 by ASME
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