NUMERICAL MODELING OF SINGLE-SIDED LASER BEAM WELDING T-JOINT

1 SATERNUS Zbigniew
Co-authors:
1 PIEKARSKA Wiesława
Institution:
1 Czestochowa University of Technology, Institute of Mechanics and Machine Design Foundations, Czestochowa, Poland, EU, saternus@imipkm.pcz.pl, piekarska@imipkm.pcz.pl
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
843-848
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
12 views / 4 downloads
Abstract

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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