Fatigue Damage Due to Non‐Gaussian Responses
Publication: Journal of Engineering Mechanics
Volume 116, Issue 1
Abstract
A formula for fatigue damage under stationary, weakly non-Gaussian responses is presented. The derivation makes use of the joint probability density function of the stress and its time-derivative given as a Charlier serie in the cumulants. The probability distribution function of the stress amplitudes is estimated assuming a narrow-banded spectrum and taking the average of the peak and trough distribution. The derived result is compared to other existing formulas and two examples illustrate the significance of small non-linearities on the fatigue damage estimate.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Jensen, J. J. (1989). “Fatigue analysis of ship hulls under non‐Gaussian wave loads.” DCAMM Report No. 389, Tech. Univ. of Denmark, Lyngby, Denmark.
2.
Jensen, J. J., and Pedersen, P. T. (1978). “On the calculation of the joint probability density of slightly non‐linear stochastic processes.” ZAMM, 58, T481–482.
3.
Longuet‐Higgins, M. S. (1963). “The effect of non‐linearities on statistical distributions in the theory of sea waves.” J. Fluid Mech., 17, Part 3, Nov., 459–480.
4.
Longuet‐Higgins, M. S. (1964). “Modified Gaussian distribution for slightly nonlinear variables.” Radio Sci., 68D(9), 1049–1062.
5.
Ochi, M. K., and Wang, W. C. (1984). “Non‐Gaussian characteristics of coastal waves.” 19th Conf. Coastal Engrg., ASCE, Aug.
6.
Winterstein, S. R. (1985). “Non‐normal responses and fatigue damage,” J. Engrg. Mech., ASCE, 111(10), 1291–1295.
7.
Winterstein, S. R. (1989b). “Hermite moment analysis of nonlinear random vibration.” Computational mechanics of reliability analysis, Liu and Belytshko, eds., Elmepress Int., Lausanne, Switzerland.
8.
Winterstein, S. R., and Manuel, L. (1989). “Non‐Gaussian response of offshore platforms: Fatigue,” by S. R. Winterstein and L. Manuel, J. Str. Engrg., ASCE, 115(3), 749–752.
Information & Authors
Information
Published In
Copyright
Copyright © 1990 ASCE.
History
Published online: Jan 1, 1990
Published in print: Jan 1990
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.