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TECHNICAL BRIEFS

Predicting Random High-Cycle Fatigue Life With Finite Elements

[+] Author and Article Information
André Preumont, Vincent Piéfort

Université Libre de Bruxelles, CP 165. 50, Av F.D. Roosevelt, B-1050 Brussels, Belgium

J. Vib. Acoust 116(2), 245-248 (Apr 01, 1994) (4 pages) doi:10.1115/1.2930420 History: Received July 01, 1992; Revised April 01, 1993; Online June 17, 2008

Abstract

This paper extends the classical theory of random fatigue to multiaxial stress fields, using a quadratic criterion. An equivalent uniaxial random process is constructed by combining the power spectral densities of the normal and tangential stresses according to the von Mises criterion. This process, that we call the von Mises stress, is used to evaluate the damage with a uniaxial model of random fatigue. A finite element implementation is proposed.

Copyright © 1994 by The American Society of Mechanical Engineers
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