Research Article
Oct 1977
Probabilistic Fatigue Design for Ocean Structures
Authors: Paul H. Wirsching, AM.ASCE, Kenneth G. Nolte, AM.ASCE, and Bernhard Stahl, AM.ASCEAuthor Affiliations
Publication: Journal of the Structural Division
Volume 103, Issue 10
Abstract
Techniques of probabilistic design theory are used to develop a method for fatigue design of structural components in ocean systems. Uncertainties that exist in material behavior, stress analysis, sea state description, as well as in the behavior of the basic theoretical model (namely the Palmgren-Miner rule) are modelled as lognormal random variables. A probability-based algorithm for fatigue design, which does not explicitly require computer analysis is presented in closed form and is, therefore, useful in preliminary design. The analysis can accommodate environments such as the Gulf of Mexico which are characterized by two different wave populations: (1)The operational sea state; and (2)storms. The model can be employed to estimate risks due to fatigue in bottom-founded ocean structures, as well as in a wide variety of other marine and terrestrial systems.
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Published In
Journal of the Structural Division
Volume 103 • Issue 10 • October 1977
Pages: 2049 - 2062
Copyright
© 1977 American Society of Civil Engineers.
History
Published in print: Oct 1977
Published online: Feb 1, 2021
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Authors
Affiliations
Paul H. Wirsching, AM.ASCE
Assoc. Prof. of Aerospace and Mech. Engrg., The Univ. of Arizona, Tucson, Ariz.
Kenneth G. Nolte, AM.ASCE
Staff Research Engr., Amoco Production Co., Tulsa, Okla.
Bernhard Stahl, AM.ASCE
Staff Research Engr., Amoco Production Co., Tulsa, Okla.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.