Out-of-plane stability design of steel beams by second-order inelastic
analysis with strain limits
analysis with strain limits
Author(s)
Quan, Chunyan
Kucuckler, Merih
Gardner, Leroy
Type
Journal Article
Abstract
An accurate and consistent approach to the out-of-plane stability design of steel beams and structures utilising second-order inelastic analysis with strain limits is proposed.The method is implemented using computationally efficient beam elements, with the ultimate structural resistance defined either by (i) the ultimate load factor or (ii) the load factor at which a strain limit, determined on the basis of the continuous strength method (CSM), is attained, whichever occurs first. Thus far, the methodhas been established for the in-plane design of steel structures and structural components;in the present paper, its scope is extended, for the first time, to the scenarios in which out-of-plane stability effects, with a focus on lateral-torsional buckling(LTB), govern. The accuracy and safety of the method are assessed against the results of nonlinear shell finite element (FE) modelling. It is shown thatthe proposed method consistently provides more accurate results than the traditional LTB design method of prEN 1993-1-1.In addition to its accuracy, the proposed approach also streamlines the design process b eliminatingthe need for cross-section classification and member design checks.
Date Issued
2021-12
Date Acceptance
2021-08-22
Citation
Thin Walled Structures, 2021, 169, pp.1-20
ISSN
0263-8231
Publisher
Elsevier
Start Page
1
End Page
20
Journal / Book Title
Thin Walled Structures
Volume
169
Identifier
https://www.sciencedirect.com/science/article/pii/S0263823121005358?via%3Dihub
Subjects
0901 Aerospace Engineering
0905 Civil Engineering
0913 Mechanical Engineering
Civil Engineering
Publication Status
Published
Date Publish Online
2021-09-30