Bending-shear interaction of cold-formed stainless steel lipped channel sections

Dissanayake Mudiyanselage, Madhushan, Poologanathan, Keerthan, Gunalan, S., Tsavdaridis, K.D., Wanniarachchi, K.S. and Nagaratnam, Brabha (2021) Bending-shear interaction of cold-formed stainless steel lipped channel sections. Structures, 30. pp. 1042-1055. ISSN 2352-0124

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Official URL: https://doi.org/10.1016/j.istruc.2020.12.071

Abstract

The bending-shear interaction response of cold-formed stainless steel lipped channel sections has been given inadequate attention in the past. Therefore, this paper investigates the bending and shear interaction behaviour of cold-formed stainless steel lipped channel sections using numerical studies. Finite element (FE) models were developed and validated against the experimental results found in the literature for three-point and four-point loading tests of lipped channel sections of both cold-formed stainless steel and cold-formed steel. The elaborated FE results were used for a comprehensive parametric study that was conducted comprising 60 FE models of three-point loading simulations of stainless steel lipped channels with five different aspect ratios to study the shear response and the bending-shear interaction response. Another 12 FE models of four-point bending simulations were developed to study the bending response. The numerical results were analysed and it is found that the sections with aspect ratios of 1.5 and 2.0 are subjected to the interaction of bending and shear while there is no interaction effect observed in the sections with other aspect ratios. Eurocode 3 and American specifications interaction equations were then evaluated using the numerical results. These design provisions are found to be too conservative for a higher level of applied shear force. Therefore, revised design equations for bending and shear interaction were proposed aiming better prediction accuracy. Further, a statistical evaluation was conducted for the proposed interaction equations and results suggest improved and consistent predictions.

Item Type: Article
Uncontrolled Keywords: Lipped channel beams, Cold-formed stainless steel, Bending-shear interaction, Numerical modelling, Eurocode 3, American specifications, Design rules
Subjects: F200 Materials Science
H200 Civil Engineering
H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Elena Carlaw
Date Deposited: 22 Feb 2021 13:18
Last Modified: 31 Jul 2021 17:01
URI: http://nrl.northumbria.ac.uk/id/eprint/45500

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