Solution for Modeling 3D Moving Heat Sources in a Semi-Infinite Medium and Applications to Submerged Arc Welding

Abstract:

The determination of the temperature distribution of submerged arc-welded plates is essential when designing submerged arc-welded joints. The key role for the change of weld-bead geometry dimension, thermal stress, residual stress, tensile stress, hardness, etc., is heat input. Heat input is the function of temperature distribution of submerged arc welded plates. An attempt is made in this paper to find the analytical solution for a moving heat-source of egg-shape in a semi-infinite body. The considered modes of heat transfer for this study are conduction and convection. The solution has been obtained by integrating the instantaneous point heat source throughout the heat source volume. Very good agreement between the predicted and measured transient temperatures at various points on submerged arc-welded plates has been obtained. The predicted yield parameters are also in good agreement with the measured values.

• Periodical: Defect and Diffusion Forum (Volumes 319-320)
• Pages: 135-149
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.319-320.135
• Online since: October 2011
• Authors: Aniruddha Ghosh
• Keywords: Gaussian Heat Distribution of Oval Shape, HAZ Width, Submerged Arc Welding Process, Temperature Distribution, Thermal Stress, Weld Pool Geometry

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