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Ultimate strength and fracture sequence of bolted connections to thin-walled carbon steel

Ultimate strength and fracture sequence of bolted connections to thin-walled carbon steel

Mahmood, Mohammed ORCID: 0000-0002-7553-6374, Elamin, Ahmed ORCID: 0000-0003-0783-5185 and Tizani, Walid (2019) Ultimate strength and fracture sequence of bolted connections to thin-walled carbon steel. Structures, 23. pp. 646-659. ISSN 2352-0124 (Online) (doi:https://doi.org/10.1016/j.istruc.2019.11.011)

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Abstract

Recent experimental studies on single shear bolted connections to thin-walled carbon steel indicated the need for parametric analysis to understand the behaviour of the connection. In this paper, finite element analysis was performed to investigate the ultimate behaviour and failure sequence of these connections. A parametric analysis was performed to investigate the effect of plate thickness, end distance and curling displacement on the connection behaviour. Five possible modes of failure were identified and analytical models for estimating the connection strength for these modes were proposed. Within the range of the validity of the study, the end distance was the most influential parameter, but the strength improvement becomes negligible at edge distance of 42 mm for plate thickness less than or equal to 3.5 mm and 48 mm for plate thickness greater than 3.5 mm. Therefore, it is recommended to limit the maximum end distance to 50 mm. The curling displacement is found to affect the stress distribution in the plate as it could reduce the connection strength by 12%. It is considered as a sign of failure only when it reaches 0.5 mm before the ultimate strength of the connection is reached. The proposed models are more accurate in predicting the connection ultimate strength when compared to EC3, AISI and AISC predictions.

Item Type: Article
Uncontrolled Keywords: bolted connections, thin-walled carbon steel, single shear bolt, fracture sequence
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > School of Engineering (ENN)
Last Modified: 22 Apr 2020 20:28
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
Selected for REF2021: None
URI: http://gala.gre.ac.uk/id/eprint/27475

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