Neizvjesnost određivanja dinamičke izdržljivosti kontejnerskih brodova

Varda, Nenad and Čižmek, Zrinka and Ćorak, Maro and Parunov, Joško (2012) Neizvjesnost određivanja dinamičke izdržljivosti kontejnerskih brodova. = Uncertainty in hull girder fatigue assessment of containership. In: XX. simpozij Teorija i praksa brodogradnje, in memoriam prof. Leopold Sorta = The 20th symposium Theory and practice shipbuilding, in memoriam prof. Leopold Sorta, 27-29.09.2012., Zagreb; Croatia.

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NEIZVJESNOST ODREĐIVANJA DINAMIČKE IZDRŽLJIVOSTI KONTEJNERSKIH BRODOVA .pdf - Published Version Jezik dokumenta:English

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Abstract (Croatian)

Cilj rada je istražiti razlike u procjeni dinamičke izdržljivosti trupa kontejnerskog broda nosivosti 9200 TEU uzrokovane neizvjesnošću predviñanja globalnog valnog opterećenja. Za dugoročne prognoze linearnih vertikalnih valnih momenata savijanja brodskog trupa korišteni su različiti alati proračuna pomorstvenosti te su pretpostavljena različita područja plovidbe. Analiza pomorstvenosti je tako provedena programom WAVESHIP, koji koristi vrpčastu metodu, te suvremenim 3D panelnim programom HYDROSTAR. Dugoročne razdiobe su određene za dva različita područja plovidbe: Sjeverni Atlantik (bez brzine napredovanja) i tzv. World Wide trgovački pravac (s brzinim napredovanja 60% projektne brzine). Određena je globalna dinamička izdržljivost brodskog trupa koristeći metodologiju propisanu u Usuglašenim pravilima za tankere. Usporeñena je dinamička izdržljivost dobivena različitim. metodama i za različita područja plovidbe. Na kraju je procijenjen utjecaj vibracija trupa pobuđenih valovima na dinamičku izdržljivost.

Abstract

The aim of the paper is to investigate differences in fatigue assessment of 9200 TEU containership caused by uncertainties in prediction of global wave loads. For that purpose, long-term predictions of linear vertical wave bending moment is calculated using different seakeeping tools and assuming different shipping routes. Thus, hydrodynamic analysis is performed using seakeeping software WAVESHIP implementing strip theory and 3D panel code HYDROSTAR. Long-term prediction is performed for 2 different wave environments: shipping route in North Atlantic (without forward speed) and World Wide trading route (forward speed 60 % of nominal speed). The fatigue life of ship hull girder is assessed according to Common Structural Rules for Oil Tankers. Resulting fatigue lives obtained by different seakeeping tools and for different wave environments are compared. Finally, influence of wave-induced ship vibration on fatigue life is assessed.

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: kontejnerski brod; valna opterećenja; dinamička izdržljivost
Keywords (Croatian): containership; wave loads; fatigue
Subjects: TECHNICAL SCIENCE > Shipbuilding
Divisions: 600 Department of Naval Engineering and Marine Technology > 620 Chair of Marine Structures Design
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 14 May 2015 12:47
Last Modified: 05 Oct 2017 10:58
URI: http://repozitorij.fsb.hr/id/eprint/4147

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