Thermal-mechanical Coupling Numerical Simulation of Steel Pillar Girth Weld in Architectural Engineering

Hui Sun, Hongliang Kuai


The heat transfer control equations of steel pillar girth weld in architectural engineering is obtained according to the analytical method, which is discretized by using Taylor series expansion method, and the one dimensional weld welding thermal cycle characteristics of different node are analyzed. Based on the software ABAQUS, the weld joint thermodynamic properties are obtained by thermal-mechanical coupling numerical simulation, including the field variables and process the output characteristics, of which results shows that the joint change trend of strain and temperature are consistent and the stress yield phenomenon is obvious under the effect of heat flux of continuous welding, while the residual stress is large, temperature falls and strain remains during the free cooling stage.


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