The effect of hull angles on ice loads, based on the measured shell plate deformations of a detachable bow on lake Saimaa

IF 3.8 2区工程技术 Q1 ENGINEERING, CIVIL

Cold Regions Science and Technology Pub Date : 2024-12-29 DOI:10.1016/j.coldregions.2024.104409

Ville Valtonen

引用次数: 0

Abstract

In this study, the permanent deformations on the shell plating of the detachable WARC bow were measured and analyzed. The bow was operated mainly on the Saimaa region in Finland from 1986 to 2021. From the measured deformations, the ice loads were calculated using both the analytical methods developed by Ranki and Hayward and non-linear finite element method and these were compared. Finite element analysis was used to show that the load height must have been at maximum 77 mm. The measured loads were compared both to the design ice loads from the IACS PC rules, and to the ice loads calculated with the same basic methods using scenarios and ice properties more aligned with the actual operation of the WARC bow and the ice conditions on lake Saimaa. It was found that the correlation between the hull angles and the ice loads according to the PC rules and the Daley-Popov collision model agree well with the measured results.

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基于赛马湖可拆船首壳板变形实测的船体角对冰荷载的影响

本文对可拆卸式WARC弓壳板的永久变形进行了测量和分析。从1986年到2021年，该舰主要在芬兰的Saimaa地区操作。根据实测变形，采用Ranki和Hayward的解析法和非线性有限元法计算冰荷载，并进行了比较。有限元分析表明，载荷高度必须达到最大77mm。将实测冰荷载与IACS PC规则的设计冰荷载进行了比较，并与采用更符合WARC船首实际运行和塞马湖冰情的情景和冰性质的相同基本方法计算的冰荷载进行了比较。根据PC规则和Daley-Popov碰撞模型得到的船体角与冰载荷的相关性与实测结果吻合较好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cold Regions Science and Technology 工程技术-地球科学综合

CiteScore

7.40

自引率

12.20%

发文量

209

审稿时长

4.9 months

期刊介绍： Cold Regions Science and Technology is an international journal dealing with the science and technical problems of cold environments in both the polar regions and more temperate locations. It includes fundamental aspects of cryospheric sciences which have applications for cold regions problems as well as engineering topics which relate to the cryosphere. Emphasis is given to applied science with broad coverage of the physical and mechanical aspects of ice (including glaciers and sea ice), snow and snow avalanches, ice-water systems, ice-bonded soils and permafrost. Relevant aspects of Earth science, materials science, offshore and river ice engineering are also of primary interest. These include icing of ships and structures as well as trafficability in cold environments. Technological advances for cold regions in research, development, and engineering practice are relevant to the journal. Theoretical papers must include a detailed discussion of the potential application of the theory to address cold regions problems. The journal serves a wide range of specialists, providing a medium for interdisciplinary communication and a convenient source of reference.