@inproceedings{5ffd5d93392347d19ed700049fa0c5bd,
title = "The sensitivity of ultimate ship hull strength to the structural component load-shortening curve",
abstract = "The prediction of ultimate ship hull strength using a simplified progressive collapse method critically relies on the evaluation of the load-shortening curve of stiffened panel components. Uncertainty in the characteristics of load-shortening curves causes subsequent uncertainty in the hull girder strength calculation. The load-shortening curve shape is influenced by parameters including imperfection, residual stress, material properties and dimensional variance. To investigate this uncertainty, a sensitivity study on the ultimate strength calculation of a ship-type box girder is completed using parametrically defined load-shortening curve. The curve is formed of linear pre-and post-collapse responses and an arc to represent the nonlinear ultimate strength region. The load-shortening curve is systematically varied in ultimate strength, ultimate strain, elastic stiffness and post-collapse stiffness. A double hull box girder model under vertical bending, combined vertical/horizontal bending and cyclic bending is analysed using this parametric representation. The influence of each parameter is evaluated with a sensitivity index. The study shows that the structural component{\textquoteright}s ultimate strength and post-collapse stiffness have the most significant influence.",
keywords = "buckling, cyclic loading, load-shortening curves, monotonic loading, sensitivity study, ship structures, ultimate strength",
author = "Shen Li and Zhiqiang Hu and Simon Benson",
year = "2020",
month = oct,
day = "11",
language = "English",
isbn = "978-1-880653-84-5",
series = "Proceedings of the International Offshore and Polar Engineering Conference",
publisher = "International Society of Offshore and Polar Engineers",
pages = "3237--3244",
editor = "Chung, {Jin S.} and Akselsen, {Odd M.} and Igor Buzin and HyunWoo Jin and Hiroyasu Kawai and Hua Liu and Dimitri Matskevitch and Bor-Feng Peng and Venkatachalam Sriram and Van, {Suak Ho} and Decheng Wan and Satoru Yamaguchi",
booktitle = "30th International Ocean and Polar Engineering Conference",
address = "United States",
note = "30th International Ocean and Polar Engineering Conference, ISOPE 2020 ; Conference date: 11-10-2020 Through 16-10-2020",
}