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Surf-Riding Threshold of Ships in Random Seas
Publikationstyp
Journal Article
Date Issued
2013-12
Sprache
English
Author(s)
Institut
Volume
13
Issue
1
Start Page
383
End Page
384
Citation
Proceedings in applied mathematics and mechanics 13 (1): 383-384 (2013-12)
Publisher DOI
A possible stability failure in ship dynamics is surf-riding of the ship in waves followed by broaching-to. In order to exclude broaching one thus seeks to prevent the ship from surf-riding. We analyze the surf-riding problem of a ship in random seas as a weakly perturbed Hamiltonian system, where the excitation owing to irregular sea waves is modeled as a Gaussian process. Then, an approximation of the probability of surf-riding in irregular sea waves is obtained using the stochastic Melnikov's method, by which means transitions from the asymmetric periodic surging motion to the surf-riding equilibrium are identified.