Deakin University
Browse

File(s) under permanent embargo

Effect of geometric imperfection and residual stress on the finite element modelling of stainless steel I-sections subjected to lateral-torsional buckling

Version 2 2024-06-04, 12:47
Version 1 2019-05-28, 08:57
conference contribution
posted on 2024-06-04, 12:47 authored by M Anwar-Us-Saadat, Mahmud AshrafMahmud Ashraf
All rights reserved. Stainless steel Is a group of steel alloy with versatile crystal structures and material behaviours. Its characteristic nonlinear, rounded stress-strain behaviour without well-defined yield point makes it different from carbon steel. The degree of nonlinearity and roundness vary significantly from one grade of stainless steel to another which also increases the challenge to give a uniform formula for predicting the ultimate capacity of stainless steel sections of all grades. Presence of initial geometric imperfection and residual stress in structural member lead to premature yielding and loss of stiffness eventually reduces the load bearing capacity. For both structural design and finite element simulations, knowledge of their magnitude and distribution is therefore important. Recent years saw keen interest from the researchers on discovering the imperfection and residual stress pattern of stainless steel welded l-sections. Current study utilizes these findings to develop of finite element (FE) models for previously experimented stainless steel I-beams subjected to lateral-torsional buckling. Types of initial geometric imperfections, residual stresses and boundary conditions were varied In the FE models. Capacity of the developed FE models when compared with that of the lateral-torsional buckling experiments, revealed the influence of the variables considered. Understandings from this study will help further to develop finite element models for parametric study on stainless steel I-beams, consequently leading to evaluate the performance of the International design guidelines and propose new formulations.

History

Volume

1

Pagination

356-364

Location

Vancouver, Canada

Start date

2017-05-31

End date

2017-06-03

ISBN-13

9781510878426

Language

eng

Publication classification

E2.1 Full written paper - non-refereed / Abstract reviewed

Copyright notice

2017, Canadian Society for Civil Engineering

Title of proceedings

Proceedings of the 6th International Conference on Engineering Mechanics and Materials 2017

Event

Engineering Mechanics and Materials. International Conference (6th : 2017 : Vancouver, Canada)

Publisher

Canadian Society for Civil Engineering

Place of publication

Montréal, Canada

Usage metrics

    Research Publications

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC