Residual Stress Influence on the Flexural Buckling of Welded I-Girders

  • The nonlinear analysis became a common tool to precisely assess the load-bearing behavior of steel beam and column members. The failure level is significantly influenced by different types of imperfections, among geometric also structural imperfections (residual stresses). Here are still gaps in the knowledge. Nowadays, 3-D welding simulation developed to a level where it could provide reliable estimation of weld-induced distortion and residual stresses. Nevertheless, modelling and computational effort are still in a less practicable range. In this study a simplified procedure to implement residual welding stresses in continuous large scale members is proposed and the influence on the ultimate limit state of slender members in compression is evaluated for two common structural steel grades. The results showed significant improvements in the utilization of load bearing capacity compared with simplified design methods. The comparatively general approach in this study offers potential for future optimization.

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Metadaten
Author: Benjamin LaunertORCiD, Michael Rhode, Arne Kromm, Hartmut PasternakORCiD, Thomas Kannengießer
URL:http://www.mrforum.com/product/9781945291166/
DOI:https://doi.org/10.21741/9781945291173-19
ISBN:978-1-94529116-6
Title of the source (English):Residual Stresses 2016 – ICRS-10
Publisher:Materials Research Forum LLC
Place of publication:Millersville, PA
Editor: Thomas M. Holden, Ondrej Muránsky, Lyndon Edwards
Document Type:Conference Proceeding
Language:English
Year of publication:2016
Tag:2-D Welding Simulation; Finite Element Method; Inherent Strain; PDA; Stability Design
First Page:109
Last Page:114
Series ; volume number:Materials Research Proceedings ; Volume 2
Faculty/Chair:Fakultät 6 Architektur, Bauingenieurwesen und Stadtplanung / FG Stahl- und Holzbau
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