Naslov
Springing effect on fatigue assessment of HHI SkyBench™ ultra large container ships

Autori
Ko, Donghyeong ; Park, Junseok ; Im, Hong-Il ; Jung, Byoung-Hoon ; Vladimir, Nikola

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 26th International Ocean and Polar Engineering Conference - ISOPE 2016 / Chung, J.S. - Rodos : The International Society of Offshore and Polar Engineers (ISOPE), 2016, 455-460

ISBN
978-1-880653-883

Skup
26th International Ocean and Polar Engineering Conference - ISOPE 2016

Mjesto i datum
Rodos, Grčka, 26.06.2016. - 01.07.2016

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Ultra Large Container Ship; hull-girder load; springing; 3D Rankine panel; fatigue damage; SkyBench™ container ship; WISH-FLEX

Sažetak
Fatigue assessment considering springing effect is conducted for the newly designed HHI SkyBenchTM and conventional ultra large container ships. HHI SkyBenchTM has movable accommodation part which is designed to maximize cargo space in container ship. However, it might be vulnerable to wave induced vibration due to the additional hatch opening. Thus, comparative study on fatigue assessment with springing effect is carried out. Similar analysis locations between both ships are selected for quantitative comparison in longitudinal direction along the ship length. Springing effects in hull girder loads are calculated by WISH-FLEX which is based on 3D Rankine panel method and modal superposition method. Time history of stress in a certain position is converted by products of hull girder loads and stress weighting factors. Fatigue damage is computed by means of rainflow counting method and 2-slope S-N curve. Through the procedure, contribution of sea states and heading angle are presented. In addition, hydroelastic effects with respect to heading angle are suggested for both ships. Linear analysis with 6-DOF motion and weakly nonlinear analysis with springing effect are considered in this paper.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja

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