Vol 12, No 2 (2008) > Articles >

Spectral Response Surfaces and the Ringing Response of Offshore Structures

I Ketut Suastika 1

Affiliations:

  1. Department of Naval Architecture and Shipbuilding Engineering, Faculty of Marine Technology,Institut Teknologi Sepuluh Nopember (ITS), Surabaya 60111, Indonesia

 

Abstract:

A method, called spectral response surface method, is proposed for the study of the ringing phenomenon of offshore structures. Newman’s results for diffraction force on a column were reformulated in terms of the frequency components of the ocean surface and their Hilbert transforms. Using a first-order reliability method together with a dynamic model for the structural response, it is straightforward to calculate the ocean surface history most likely to generate an extreme ringing response and the ringing response history.

Keywords: ringing, spectral response surface, first-order reliability method
Published at: Vol 12, No 2 (2008) pages: 99-103
DOI:

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