from the conferences organized by TANGER Ltd. provisional website
The paper concerns numerical modeling of single-side T-joint welding using the laser beam. The purpose of performed analysis is the determination of the temperature field in the welded joint, stress state and the estimation of welding deformation. Numerical analysis of laser welding phenomena is carried out in Abaqus/FEA software. The position of the beam in relation to the connected edges of the T-joint is selected in the developed three-dimensional discrete model to ensure full melting of the contact area of joined surfaces. The calculation model has been extended with additional subroutines that allow perform a full analysis of thermomechanical phenomena. The power distribution of a moving welding source is modeled in subroutines using mathematical formulas based on transformational equations for relative positioning of the heat source to the joined elements. Changing with temperature thermomechanical properties of welded elements made of austenitic steel are considered in the material module of Abaqus/CAE software. Temperature distribution in analyzed joint, stress state and welding deformations are determined on the basis of numerical simulations. The experimental research available in domestic and foreign literature is used to verify obtained simulation results.Keywords: Laser welding, Single-side T-joint, Numerical modelling, Abaqus/FEA software, movable welding source
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