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Abstract
The direct welding K-joint of steel tubular members is a kind of usual joint of Steel Tube Tower for Large Crossing of Transmission Lines. However, the dynamic stress-strain and the subsequent formation of residual stress produce in welding process,which are the main factors affecting the load carrying capacity, so it is necessary to research and analyze.Based on thermoelastic-plastic theory, the use of ANSYS Software thermal - structural coupling function and the indirect method, combined with element birth and death technology. The temperature field and stress field calculations have been residual stress and deformation distribution. Providing a reference for direct welding joint of steel tubular members of temperature field, stress and deformation are analizes.
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