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2020 | OriginalPaper | Chapter

9. Effect of Mechanical Constraints on Thermo-Mechanical Behaviour of Laser-Welded Dissimilar Joints

Authors : Bikash Kumar, Rachit Nawani, Swarup Bag

Published in: Advances in Simulation, Product Design and Development

Publisher: Springer Singapore

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Abstract

Titanium and its alloy exhibit eminent properties such as low density, creep and corrosion resistance, which attribute miniature applications in medical industry. Joining of dissimilar material poses challenge due to great difference in their thermal and mechanical properties. Residual stresse is an important cogitation for the component integrity and life assessment of welded joints where its magnitude arises up to yield strength. The present study involves finite element-based modelling of dissimilar welding (Ti–SS) to examine the thermo-mechanical behaviour of welded joints. The temperature profiles are validated with experimental data. In thermo-mechanical analysis, the mechanical constraint plays an important role which substitutes the practical welding condition. Hence, the influence of different restraint conditions on the residual stress and distortion are analysed in the present work. No significant difference is found in magnitude and trend of residual stresses for different boundary condition. However, remarkable variation is observed in distortion analysis for different conditions.

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Title: Effect of Mechanical Constraints on Thermo-Mechanical Behaviour of Laser-Welded Dissimilar Joints
Authors: Bikash Kumar
Rachit Nawani
Swarup Bag
Publisher: Springer Singapore
Book: Advances in Simulation, Product Design and Development
Print ISBN: 978-981-329-486-8

Electronic ISBN: 978-981-329-487-5

Copyright Year: 2020
DOI: https://doi.org/10.1007/978-981-32-9487-5_9

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