This paper presents a Monte Carlo simulation method for fatigue failure, by which the randomness of two material properties as well as that of the applied load can be incorporated into a stochastic model using an appropriate failure criterion to predict the statistical characteristics of fatigue life under constant and random amplitude cyclic loading conditions. In this technique, both the endurance limit Se and the fatigue strength coefficient Sf′ are treated as stochastic variables. The combined effect of the randomness of Se, Sf′, and the applied stress on the statistical characteristics of fatigue lives is predicted analytically using digital simulation of fatique tests. The life distributions and their statistical characteristics are found to be in good agreement with those obtained from analyzing the experimental results, indicating that the proposed technique and the underlying assumptions and hypotheses are adequate. The suggested method is believed to be an effective, fast, and easy-to-use design tool which is suitable for use on electronic computers. It is ideal for parametric studies compared with the costly and time-consuming laboratory fatigue tests. Minimum experimental data are needed as a basis for the analysis. New results are presented which show the effect of the randomness of the loads and material properties on the randomness of fatigue life distribution.
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February 1976
This article was originally published in
Journal of Engineering for Industry
Research Papers
A Simulation Method of Establishing Fatigue Life Distribution
H. A. Elmaraghy,
H. A. Elmaraghy
Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada
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J. N. Siddall
J. N. Siddall
Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada
Search for other works by this author on:
H. A. Elmaraghy
Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada
J. N. Siddall
Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada
J. Eng. Ind. Feb 1976, 98(1): 183-188
Published Online: February 1, 1976
Article history
Received:
July 28, 1975
Online:
July 15, 2010
Citation
Elmaraghy, H. A., and Siddall, J. N. (February 1, 1976). "A Simulation Method of Establishing Fatigue Life Distribution." ASME. J. Eng. Ind. February 1976; 98(1): 183–188. https://doi.org/10.1115/1.3438814
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