Ultimate strength of welded aluminium stiffened panels under combined biaxial and lateral loads: A numerical investigation

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL Marine Structures Pub Date : 2024-06-12 DOI:10.1016/j.marstruc.2024.103654

Xintong Wang, Zhaolong Yu, Jørgen Amdahl

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Abstract

The number and size of aluminium non-monohull ships have been steadily increasing over time. This raises growing concerns regarding their structural strength, especially considering the adverse effects of the heat-affected-zone (HAZ) on welding connections in aluminium structures. This paper investigates the ultimate strength of welded aluminium stiffened panels under combined biaxial compressive loads and lateral pressure through the application of numerical simulations. Altogether 360 cases are simulated with varied panel lengths, welding patterns and load combinations. The results are presented and discussed with respect to force end-shortening curves, failure modes and ultimate strength. Influences of the combined loads and HAZ effects are summarized. The numerical results are compared to two commonly used design methods in the marine industry, the International Association of Classification Societies (IACS) rule and the Panel Ultimate Limit States (PULS) approach. Their applicability to welded aluminium stiffened panels is discussed, and modifications are suggested with respect to the transverse loads, lateral pressure, and HAZ effects.

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焊接铝加劲板在双轴荷载和侧向荷载共同作用下的极限强度：数值研究

随着时间的推移，非单体铝制船舶的数量和规模都在稳步增长。这引起了人们对其结构强度的日益关注，特别是考虑到热影响区（HAZ）对铝结构焊接连接的不利影响。本文通过数值模拟研究了焊接铝加劲板在组合双轴压缩载荷和侧压力下的极限强度。共模拟了 360 种情况，面板长度、焊接模式和荷载组合各不相同。结果显示并讨论了受力端部缩短曲线、失效模式和极限强度。总结了组合载荷和 HAZ 效应的影响。数值结果与船舶行业常用的两种设计方法，即国际船级社协会（IACS）规则和面板极限状态（PULS）方法进行了比较。讨论了这两种方法对焊接铝加劲板的适用性，并就横向载荷、横向压力和 HAZ 效应提出了修改建议。

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来源期刊

Marine Structures 工程技术-工程：海洋

CiteScore

8.70

自引率

7.70%

发文量

157

审稿时长

6.4 months

期刊介绍： This journal aims to provide a medium for presentation and discussion of the latest developments in research, design, fabrication and in-service experience relating to marine structures, i.e., all structures of steel, concrete, light alloy or composite construction having an interface with the sea, including ships, fixed and mobile offshore platforms, submarine and submersibles, pipelines, subsea systems for shallow and deep ocean operations and coastal structures such as piers.