Session: 07-05-01 Ice Load modelling

Paper Number: 127072

127072 - Extreme Value Analysis of Ship Roll Motion With Consideration of Ice Accumulation 

Ice accumulation poses a significant threat to ship stability, potentially leading to capsizing if the roll angle surpasses a certain threshold. Investigating the impact of ice accumulation on the extreme roll angle is crucial for the safety and stability of ship sailing in the Arctic regions. This article presents a study that aims to evaluate the effects of ice accumulation on ship stability in waves. Specifically, the standard ship model CEHIPAR 2792 is selected and the dead ship condition is considered. Calculation of the roll damping coefficients via CFD method has been verified with the experimental data. Then, the SDOF (single degree of freedom) models for the roll motions with and without ice accumulation are established in order to calculate the roll response in random seas. The influence of the ice accumulation on the roll damping term as well as on the restoring term are incorporated in the SDOF model. Finally, extreme value analysis is executed to evaluate the influence of ice accumulation on the roll response and ship stability in waves. x x x x x  x x x x x  x x x x x  x x x x x  x (will be extended in the final version)

Presenting Author: Jianzhang Qi Wuhan University of Technology

Presenting Author Biography: Mr. Jianzhang Qi is a Phd candidate at Wuhan University of Technology.

Authors:

Wei Chai Wuhan University of Technology
Jianzhang Qi Wuhan University of Technology
Bernt Leira Norwegian University of Science and Technology
Chana Sinsabvarodom Chiang Mai University
Longxia Yang Shanghai Marine Equipment Research Institute
Shunying Ji Dalian University of Technology