A modified model for the estimation of fatigue life derived from random vibration theory

Citation
Hy. Liou et al., A modified model for the estimation of fatigue life derived from random vibration theory, PROB ENG M, 14(3), 1999, pp. 281-288
Citations number
13
Categorie Soggetti
Mechanical Engineering
Journal title
PROBABILISTIC ENGINEERING MECHANICS
ISSN journal
02668920 → ACNP
Volume
14
Issue
3
Year of publication
1999
Pages
281 - 288
Database
ISI
SICI code
0266-8920(199907)14:3<281:AMMFTE>2.0.ZU;2-U
Abstract
When a component is subjected to variable-amplitude loading, if the fundame ntal stress-life cycle relationship and an accumulation rule are given, the n the fatigue damage or fatigue life of the component can be calculated and /or estimated. In the present paper, random vibration theory is incorporate d into the analysis of the above problem. Several formulas are thus derived . Experimental work is then carried out to verify the derived formulas. Com parison is made among the results calculated based on different formulas, d ifferent accumulation rules and different random loading. It is concluded t hat the derived formulas do provide us with quick prediction of the fatigue damage or fatigue life when a component is subjected to variable-amplitude loading that has a certain random nature. (C) 1999 Elsevier Science Ltd. A ll rights reserved.