Affiliation:
1. Department of Mechanics, Zhejiang University, Hangzhou 310027, People’s Republic of China
Abstract
The analytical expressions for the probability densities of the cumulative fatigue damage and fatigue life and for the reliability function are obtained for a mechanical or structural component subject to stationary random stress process on the basis of a stochastic theory of fatigue damage accumulation proposed by the first author and his co-worker and the Morrow’s nonlinear damage rule. The comparison between the results from Morrow’s and Palmgren-Miner’s damage rules for the case when the stress is a narrow-band stationary Gaussian process with zero mean is made and some important conclusions are drawn.
Subject
Mechanical Engineering,Mechanics of Materials,Safety, Risk, Reliability and Quality
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