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contributor authorJ. R. Krokstad
contributor authorA. Nestegård
contributor authorT. Marthinsen
contributor authorC. T. Stansberg
date accessioned2017-05-08T23:57:32Z
date available2017-05-08T23:57:32Z
date copyrightFebruary, 1998
date issued1998
identifier issn0892-7219
identifier otherJMOEEX-28123#20_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/120976
description abstractNew results from the most recent work within the Norwegian Joint Industry Project (JIP) “Higher Order Wave Load Effects on Large Volume Structures” are presented. A nonslender theoretical model is validated from experiments for two fixed, vertical cylinders with different diameter/peak wavelength ratios. A combination of complete diffraction first-order simulations, sum and difference frequency second-order simulations, and third-order FNV (Faltinsen, Newman, and Vinje, nonlinear long wave model) is implemented in order to develop a simplified and robust ringing load model for a large range of cylinder diameter/peak wavelength ratios. Results from the full diffraction second-order analysis show a significant reduction of second-order loads compared to pure FNV in the wavelength range relevant for ringing loads. The results show improved correspondence with high-frequency experimental loads compared with the unmodified FNV. Results for different cylinder peak wavelength ratios are presented, including validation against experiments. In addition, a few simplified response simulations are carried out demonstrating significant improvements with the modified FNV model.
publisherThe American Society of Mechanical Engineers (ASME)
titleA New Nonslender Ringing Load Approach Verified Against Experiments
typeJournal Paper
journal volume120
journal issue1
journal titleJournal of Offshore Mechanics and Arctic Engineering
identifier doi10.1115/1.2829515
journal fristpage20
journal lastpage29
identifier eissn1528-896X
keywordsStress
keywordsWavelength
keywordsEngineering simulation
keywordsCylinders
keywordsDiffraction AND Waves
treeJournal of Offshore Mechanics and Arctic Engineering:;1998:;volume( 120 ):;issue: 001
contenttypeFulltext


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