Marine Component Fatigue Reliability
Publication: Journal of Structural Engineering
Volume 119, Issue 7
Abstract
A method is presented for evaluating the fatigue of offshore structural steel members based on structural component reliability procedures coupled with spectral analysis methods. The approach is based on formulating a nonlinear performance function that expresses the cumulative fatigure damage in the form of Miner's rule. Uncertainties in the cumulative fatigue damage rule and stress calculation are handled by the treatment of the parameters in question as random variables. As a measure of reliability against fatigue, the Hasofer‐Lind reliability index of the performance function is calculated using the first‐order marginal distribution method. The approach is invariant, accounts for correlation among random variables, and permits the ordering of the random variables and deterministic parameters to be readily performed. A numerical application on a simple idealized platform is used to demonstrate the method and study the fatigue reliability sensitivity. Results of the analysis indicate that the reliability is most sensitive to uncertainty in the stress calculation.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
“Background to new fatigue design guidance for steel welded joints in offshore structures.” (1984). Report, U.K. Dept. of Energy, London, England.
2.
Berge, B., and Penzien, P. (1975). “Three‐dimensional stochastic response of offshore towers to wave action.” SESM research rep. No. 75‐10, Dept. of Civ. Engrg., Univ. of California at Berkeley, Berkeley, Calif.
3.
Carr, P., Clayton, M., Busby, P. L., and Dobson, J. (1986). “A probabilistic strategy for subsea inspection of steel structures.” J. Soc. Petroleum Engrs., 1, 187–195.
4.
Der Kiureghian, A., and Liu, P. L. (1986). “Structural reliability under incomplete probability information.” J. Engrg. Mech., ASCE, 112(1), 85–104.
5.
“Design of tubular joints for offshore structures.” (1985). Report UR33, UEG Publications, London, England.
6.
Dowling, N. E. (1972). “Fatigue failure predictions for complicated stress‐strain histories.” J. Materials, 7(1), 71–87.
7.
Draft recommended practice for planning, designing, and constructing fixed offshore platforms—Load and resistance factor design. (1989). American Petroleum Institute, 1st Ed., Washington D.C.
8.
“Fatigue reliability: Introduction.” (1982a). J. Struct. Div., ASCE, 108(1), 3–23.
9.
“Fatigue reliability: Variable amplitude loading.” (1982b). J. Struct. Div., ASCE, 108(1), 47–69.
10.
Hanna, S. Y., and Karsan, D. (1991). “Fatigue data for reliability‐based offshore platform inspection and repair.” J. Struct. Engrg., ASCE, 117(10), 3168–3185.
11.
Hohenbichler, M., and Rackwitz, R. (1981). “Non‐normal dependent vectors in structural safety.” J. Engrg. Mech. Div., ASCE, 107(6), 1227–1238.
12.
Karsan, D. I., Kumar, A., and Hanna, S. Y. (1988). “Failure path identification for fixed offshore structures subjected to fatigue.” Proc. Int. Conf. Behavior of Offshore Structures, BOSS '88, Norwegian Inst. of Technology, Trodheim, Norway, 1223–1238.
13.
Karsan, D. I., and Kumar, A. (1990). “Fatigue failure paths for offshore platform inspection.” J. Struct. Engrg., ASCE, 116(6), 1679–1695.
14.
Knapp, A. E., and Stahl, B. (1985). “Offshore platform fatigue cracking probability.” J. Struct. Engrg., ASCE, 111(8), 1647–1660.
15.
Kumar, A., and Karsan, D. I. (1989). “Rational inspection of offshore platforms.” Proc. 8th Offshore Mech. Arctic Engrg. Conf., ASME, 1, 293–300.
16.
Leger, P., Ricles, J. M., and Robayo, L. J. (1990). “Reducing modal truncation error in the wave response analysis of offshore structures.” Communications in Appl. Numerical Methods, 6(Sept.), 7–16.
17.
Leve, H. L. (1969). “Cumulative damage theories.” Metal fatigue theory and design, John Wiley and Sons, New York, N.Y.
18.
Madsen, H. O., Krenk, S., and Lind, N. C. (1986). Methods of structural safety. Prentice‐Hall Publishing Co., Englewood Cliffs, N.J.
19.
Martindale, S. G., and Wirsching, P. H. (1983). “Reliability‐based progressive fatigue collapse.” J. Struct. Engrg., ASCE, 109(8), 1792–1811.
20.
Matsuishi, M., and Endo, T. (1968). “Fatigue of metals subjected to varying stress.” Proc. Japan Soc. Mech. Engrs., Fukuaka, Japan.
21.
Miner, M. A. (1945). “Cumulative damage in fatigue.” J. Applied Mech., ASME, 67, A159–A164.
22.
Proc. Third Int. European Coal and Steel Community (ESC) Offshore Conf. Steel in Marine Structures (1987). Delft, The Netherlands.
23.
Recommended practice for planning, designing, and constructing fixed offshore platforms. (1991). American Petroleum Institute 19th Ed., Washington D.C.
24.
Stahl, B., and Geyer, J. F. (1984). “Fatigue reliability analysis in offshore structures.” J. Struct. Engrg., ASCE, 110(10), 2307–2323.
25.
Summary and Tasks Reports. (1987). United Kingdom Offshore Steel Research Project UKOSRP II. London, England.
26.
Wirsching, P. H. (1979). “Fatigue reliability in welded joints of offshore structures.” Proc. Offshore Techn. Conf., Houston, Tex.
27.
Wirsching, P. H., and Light, M. C. (1980). “Fatigue under wide band random stresses.” J. Struct. Div., ASCE, 106(7), 1593–1607.
28.
Wirsching, P. H. (1981). “Fatigue reliability analysis in offshore structures.” Probabilistic methods in structural engineering, M. Shinozuka and J. T. P. Yao, eds., ASCE, 107(11), 293–307.
29.
Wirsching, P. H. (1984). “Fatigue reliability for offshore structures.” J. Struct. Engrg., ASCE, 110(10), 2340–2356.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 119 • Issue 7 • July 1993
Pages: 2215 - 2234
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Aug 19, 1992
Published online: Jul 1, 1993
Published in print: Jul 1993
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.