Modelling of Thermo-Mechanical Effects Generated By Friction Spot Stir Welding Process
Keywords:
FSSW process, FEA, temperature, Cauchy stress evolutionAbstract
The paper addresses the numerical modelling of Friction Spot Stir Welding, one of the optimal processes which can successfully replace the conventional resistance spot welding and riveting techniques in performing the lightweight structures in the automotive and aerospace industries. Based on finite elements analysis, the three- dimensional model, described in this work, combines the mechanical action of the shoulder and the thermomechanical effect of the welded material. It could be an efficient tool in the prediction of temperature and stress fields generated in 6061-T4 Al alloy joint by FSSW process. The tool was considered a rigid solid and the workpiece was considered a ductile material characterized by elasticity, plasticity, and a kinetic hardening effect. The outcomes of the numerical analysis provide information on heat transfer, temperature and Cauchy stress evolution in the plunging and stirring phases of the process.
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Papers accepted for publication become the copyrighted property of the Annals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology. No part of the publication may be reproduced or transmitted in any form, or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, except in limited quantities for the non-commercial purposes of scientific or educational advancement, without permission in writing from the Editorial Board.
