Analyzing Fracture Behavior of Beam-Column Joints Using Micromechanical Fracture Models

Abstract:

The micromechanical fracture models were used to study the fracture behavior of the welded connection and welded-bolted connection joints. The Void Growth Model was implemented in commercial finite element software ABAQUS through the user-defined subroutines. The results predicted that cracks initiated at the edge of the welds and extended along the length and thickness of the welds. Comparing the effects of equivalent plastic strain and stress triaxiality for the fracture of the first failure element of both beam-to-column joints, we found that the equivalent plastic strain grew linearly as the loads increased and the weld of the lower flange generated cracks when the stress triaxiality increased at maximum value.

• Periodical: Applied Mechanics and Materials (Volumes 744-746)
• Pages: 3-7
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.744-746.3
• Online since: March 2015
• Authors: Chen Zhang*, Yu Ping Sun, Ju Tao Zhang, Yu Gu
• Keywords: Beam-Column Joints, Fracture, VGM

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