The Variation of the Stress Intensity Factor of Welded Flange-Bloted Wed Connection

Abstract:

In this paper ABAQUS is used to establish three dimensional finite element(3D) model of WFBW, fracture behavior of “artificial crack” of the weld root is analyzed, the stress intensity factor(KⅠ) as a fracture mechanics parameters to calculate fracture behavior in the beam flange weld root. Results show that stress intensity factor varies cross the beam flange width. When selecting the same initial flaw length, the stress intensity factors of bottom flange weld root was significantly higher than in the top flange weld root. The K1 increases nearly linear with the increase of the initial flaw length. Comparison of 2D and 3D models, when the same initial flaw length, calculation of KⅠ by the three-dimensional model approximately as 1.5 times as that by two-dimensional model.

• Periodical: Applied Mechanics and Materials (Volumes 166-169)
• Pages: 3250-3253
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.166-169.3250
• Online since: May 2012
• Authors: Yu Ping Sun, Zun Li Teng
• Keywords: Artificial Crack, Fracture Toughness, Stress Intensity Factor (SIF), Welded Flange-Bolted Wed Connection

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