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A statistical analysis of low frequency second-order forces and motions
AbstractProbability density functions are derived for low frequency second-order forces and motions using a method which represents the random seastate as a sum of regular waves. The method is shown to agree with another recently developed technique and to give a physical insight into the level of approximation which is employed. A convergence check indicates the importance of including a sufficient number of wave components and it is demonstrated that too few components have been considered previously. A method of predicting the extreme value of the response is also presented, and the relationship between the damping coefficient and the response statistics is investigated by considering the response of an example structure.
A statistical analysis of low frequency second-order forces and motions
AbstractProbability density functions are derived for low frequency second-order forces and motions using a method which represents the random seastate as a sum of regular waves. The method is shown to agree with another recently developed technique and to give a physical insight into the level of approximation which is employed. A convergence check indicates the importance of including a sufficient number of wave components and it is demonstrated that too few components have been considered previously. A method of predicting the extreme value of the response is also presented, and the relationship between the damping coefficient and the response statistics is investigated by considering the response of an example structure.
A statistical analysis of low frequency second-order forces and motions
Langley, R.S. (author)
Applied Ocean Research ; 9 ; 163-170
1987-01-01
8 pages
Article (Journal)
Electronic Resource
English
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