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Expected fatigue damage and expected extreme response for Morison-type wave loading
AbstractNon-linear probability distributions for Morison-type wave loading are used to indicate the effect of drag forces on the expected fatigue damage and the expected extreme response of quasi-statically responding (members of) offshore structures. Results are compared with those from commonly used equivalent linear methods of analysis. It is found that the expected fatigue damage and the expected extreme response based on non-linear methods are approximately equal to results from linear methods when inertia is the dominant force. However, in the event of the drag forces forming a considerable part of the total wave loading, both fatigue damage and extreme response can significantly exceed those predicted by linear methods. The difference between the two methods is quantified in terms of a drag-inertia parameter, which is directly related to the sea state under consideration.
Expected fatigue damage and expected extreme response for Morison-type wave loading
AbstractNon-linear probability distributions for Morison-type wave loading are used to indicate the effect of drag forces on the expected fatigue damage and the expected extreme response of quasi-statically responding (members of) offshore structures. Results are compared with those from commonly used equivalent linear methods of analysis. It is found that the expected fatigue damage and the expected extreme response based on non-linear methods are approximately equal to results from linear methods when inertia is the dominant force. However, in the event of the drag forces forming a considerable part of the total wave loading, both fatigue damage and extreme response can significantly exceed those predicted by linear methods. The difference between the two methods is quantified in terms of a drag-inertia parameter, which is directly related to the sea state under consideration.
Expected fatigue damage and expected extreme response for Morison-type wave loading
Brouwers, J.J.H. (author) / Verbeek, P.H.J. (author)
Applied Ocean Research ; 5 ; 129-133
1983-01-01
5 pages
Article (Journal)
Electronic Resource
English
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