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Numerical modelling and fire design of stainless steel hollow section columns

Numerical modelling and fire design of stainless steel hollow section columns
Numerical modelling and fire design of stainless steel hollow section columns
In this paper, the elevated temperature buckling performance and design of cold-formed square, rectangular and circular hollow section columns made of stainless steel is studied through a numerical modelling investigation. The finite element analysis software Abaqus was employed to perform the simulations, where the validity of the models was established by replicating the results of flexural buckling tests at both elevated and room temperatures from literature test programmes. In total, twelve square (SHS) and rectangular (RHS) hollow section columns tested at elevated temperature and eleven circular (CHS) hollow section columns tested at room temperature were simulated. Following this, a comprehensive numerical parametric investigation was performed to systematically assess the effect of variation of the governing parameters including the grade of stainless steel (austenitic, duplex and ferritic) and the elevated temperature member slenderness (‾λ = 0.1–2.0) for all considered cross-section shapes with the addition of the aspect ratio of the cross-section (h/b = 1.0 and 1.5) and the column axis of buckling (major and minor) for the SHS and RHS. The applicability and accuracy of the design methods recommended in EN 1993-1-2 and the Design Manual for Stainless Steel Structures were carefully assessed on the basis of the numerical flexural buckling performance results. New buckling formulations for the fire design of cold-formed stainless steel SHS/RHS and CHS columns were proposed, and their suitability was confirmed by means of reliability analysis.
0263-8231
1-13
Mohamed, Asif
742c9844-4d87-41b9-ae41-9e632ec6f240
Afshan, Sheida
68dcdcac-c2aa-4c09-951c-da4992e72086
Mohamed, Asif
742c9844-4d87-41b9-ae41-9e632ec6f240
Afshan, Sheida
68dcdcac-c2aa-4c09-951c-da4992e72086

Mohamed, Asif and Afshan, Sheida (2019) Numerical modelling and fire design of stainless steel hollow section columns. Thin-Walled Structures, 144 (106243), 1-13, [106243]. (doi:10.1016/j.tws.2019.106243).

Record type: Article

Abstract

In this paper, the elevated temperature buckling performance and design of cold-formed square, rectangular and circular hollow section columns made of stainless steel is studied through a numerical modelling investigation. The finite element analysis software Abaqus was employed to perform the simulations, where the validity of the models was established by replicating the results of flexural buckling tests at both elevated and room temperatures from literature test programmes. In total, twelve square (SHS) and rectangular (RHS) hollow section columns tested at elevated temperature and eleven circular (CHS) hollow section columns tested at room temperature were simulated. Following this, a comprehensive numerical parametric investigation was performed to systematically assess the effect of variation of the governing parameters including the grade of stainless steel (austenitic, duplex and ferritic) and the elevated temperature member slenderness (‾λ = 0.1–2.0) for all considered cross-section shapes with the addition of the aspect ratio of the cross-section (h/b = 1.0 and 1.5) and the column axis of buckling (major and minor) for the SHS and RHS. The applicability and accuracy of the design methods recommended in EN 1993-1-2 and the Design Manual for Stainless Steel Structures were carefully assessed on the basis of the numerical flexural buckling performance results. New buckling formulations for the fire design of cold-formed stainless steel SHS/RHS and CHS columns were proposed, and their suitability was confirmed by means of reliability analysis.

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Numerical modelling and fire design of stainless steel Author version - Accepted Manuscript
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Accepted/In Press date: 11 June 2019
e-pub ahead of print date: 3 August 2019
Published date: 1 November 2019

Identifiers

Local EPrints ID: 433240
URI: http://eprints.soton.ac.uk/id/eprint/433240
ISSN: 0263-8231
PURE UUID: d9c545f2-4595-48d5-ab62-42b6659559e6
ORCID for Sheida Afshan: ORCID iD orcid.org/0000-0003-1048-2931

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Date deposited: 12 Aug 2019 16:30
Last modified: 16 Mar 2024 08:05

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Contributors

Author: Asif Mohamed
Author: Sheida Afshan ORCID iD

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