Vol. 15, No. 1, pp. 1-8(2019)
RESIDUAL STRESS OF WELDED I SECTIONS FABRICATED FROM HIGH
PERFORMANCE STEEL: EXPERIMENTAL INVESTIGATION AND MODELLING
Yong-Lei Xu1, Yong-Jiu Shi1*, Yi-Ran Wu1 and Ling-Ye Meng1
Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry,
Department of Civil Engineering, Tsinghua University, Beijing 100084, P.R. China
*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it. )
Received: 01 October 2017; Revised: 21 November 2017; Accepted: 13 December 2017
DOI:10.18057/IJASC.2019.15.1.1
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ABSTRACT
An experimental study was presented to investigate the magnitude and distribution of residual stresses in welded I sec-tions fabricated from a new type of high performance steel with high strength as well as improved fire and corrosion resistance. The residual stress of three I sections with various width-thickness ratios was measured by using sectioning method and more than 2000 original readings were obtained. The effects of width-thickness ratio and interaction of residual stress in the flange and web were clarified. It was found that compressive residual stress was strongly correlated with sectional dimensions, while tensile residual stress at the weld region or flange edge was less correlated with them. In addition, no interaction between the residual stress in the flange and web was identified. Based on the test results, a distribution model of residual stress was proposed which could well represent the experimental results. Finally, the mag-nitude of residual stresses in welded I sections fabricated from this new type of high performance steel was compared with that of high strength steel.
KEYWORDS
WGJ steel, Residual stress, Welded I sections, Sectioning process, Modeling
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