Dynamic Fatigue Assessment of Fixed Offshore Platform
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Authors
Azarhoushang, Azin
Nikraz, Hamid
Date
2012Type
Conference Paper
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Azarhoushang, Azin and Nikraz, Hamid. 2012. Dynamic Fatigue Assessment of Fixed Offshore Platform, in J Chung, I Langen, S Young Hong & S Prinsenberg (ed), Proceedings of the 22nd International Offshore and Polar Engineering Conference, Jun 17-22 2012, pp. 1142-1147. Rhodes, Greece: International Society of Offshore and Polar Engineers.
Source Title
Proceedings of the Twenty-second (2012) International Offshore and Polar Engineering Conference
Source Conference
Twenty-second (2012) International Offshore and Polar Engineering Conference
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Abstract
In this paper a practical method for dynamic fatigue assessment of jacket-type offshore structure is investigated. Fatigue is a primary mode of failure for steel structures that are subjected to dynamic loads. For offshore structures the main source of fatigue inducing stress range are ocean waves. The spectral approach to fatigue analysis is an attempt to account for the random nature of a confused sea in a rational manner. An accurate procedure for the random vibration computation of structure is developed using frequency domain techniques. To illustrate the aforementioned methodology, a jacket type offshore platform in the Persian Gulf has been selected.
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