Standardised material properties for numerical parametric studies of stainless steel structures and buckling curves for tubular columns
Standardised material properties for numerical parametric studies of stainless steel structures and buckling curves for tubular columns
While the nominal material properties given in material specifications are suitable for design purposes, for the generation of realistic numerical parametric results that are ‘equivalent’ to physical experiments, material properties that are representative of actual structural members are required. Standardised values for these properties are proposed herein. Following analysis of a comprehensive database of material test data from different stainless steel products, values for the yield stress fy, the ultimate tensile stress fu, the strain at ultimate tensile stress εu and the Ramberg-Osgood parameters n and m are proposed. This enables the generation of standardised stress-strain curves for typical austenitic, duplex and ferritic stainless steel sections. Following this, an extensive numerical modelling study, incorporating the proposed standardised material parameters, was carried out to investigate the effect of production route (cold-formed and hot-finished) and material grade (austenitic, duplex and ferritic) on the flexural buckling behaviour and design of stainless steel square, rectangular and circular hollow section compression members. The FE generated flexural buckling data, combined with column test data from the literature, were used to derive a series of buckling curves for the design of stainless steel compression members. The suitability of the proposals was confirmed by means of reliability analysis.
Buckling curves, Columns, Material modelling, Parametric study, Reliability, Stainless steel
2-11
Afshan, S.
68dcdcac-c2aa-4c09-951c-da4992e72086
Zhao, O.
7c6ee443-1c84-4f9e-bec6-86d376a619eb
Gardner, L.
2d5fc7ca-efd9-425a-981c-73d3937aca08
1 January 2019
Afshan, S.
68dcdcac-c2aa-4c09-951c-da4992e72086
Zhao, O.
7c6ee443-1c84-4f9e-bec6-86d376a619eb
Gardner, L.
2d5fc7ca-efd9-425a-981c-73d3937aca08
Afshan, S., Zhao, O. and Gardner, L.
(2019)
Standardised material properties for numerical parametric studies of stainless steel structures and buckling curves for tubular columns.
Journal of Constructional Steel Research, 152, .
(doi:10.1016/j.jcsr.2018.02.019).
Abstract
While the nominal material properties given in material specifications are suitable for design purposes, for the generation of realistic numerical parametric results that are ‘equivalent’ to physical experiments, material properties that are representative of actual structural members are required. Standardised values for these properties are proposed herein. Following analysis of a comprehensive database of material test data from different stainless steel products, values for the yield stress fy, the ultimate tensile stress fu, the strain at ultimate tensile stress εu and the Ramberg-Osgood parameters n and m are proposed. This enables the generation of standardised stress-strain curves for typical austenitic, duplex and ferritic stainless steel sections. Following this, an extensive numerical modelling study, incorporating the proposed standardised material parameters, was carried out to investigate the effect of production route (cold-formed and hot-finished) and material grade (austenitic, duplex and ferritic) on the flexural buckling behaviour and design of stainless steel square, rectangular and circular hollow section compression members. The FE generated flexural buckling data, combined with column test data from the literature, were used to derive a series of buckling curves for the design of stainless steel compression members. The suitability of the proposals was confirmed by means of reliability analysis.
Text
Afshan et al (2018) - Standardised material properties for numerical parametric studies
- Accepted Manuscript
More information
Accepted/In Press date: 19 February 2018
e-pub ahead of print date: 19 April 2018
Published date: 1 January 2019
Keywords:
Buckling curves, Columns, Material modelling, Parametric study, Reliability, Stainless steel
Identifiers
Local EPrints ID: 429981
URI: http://eprints.soton.ac.uk/id/eprint/429981
ISSN: 0143-974X
PURE UUID: 5b75f9ea-1553-422e-94ca-170a79d0a6d4
Catalogue record
Date deposited: 09 Apr 2019 16:30
Last modified: 16 Mar 2024 07:44
Export record
Altmetrics
Contributors
Author:
O. Zhao
Author:
L. Gardner
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
