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Mathematical Problems in Engineering
Volume 2012, Article ID 263429, 8 pages
http://dx.doi.org/10.1155/2012/263429
Research Article

Modeling of Thermel Transport for GMAW

Mechanical Engineering, Government College of Engineering & Textile Technology Berhampore, West Bengal 742101, India

Received 26 December 2011; Revised 25 March 2012; Accepted 5 April 2012

Academic Editor: Sergio Preidikman

Copyright © 2012 Aniruddha Ghosh. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Investigation of temperature distribution of submerged arc welded plates is essential while designing submerged arc welding joint because the key parameter for the change of weld bead geometry dimension, thermal stress, residual stress, tensile stress, hardness, and so forth is heat input, and heat input is the function of temperature distribution of GMAW process. An attempt is made in this paper to find out the exact solution of the thermal field induced in a semi-infinite body by a moving heat source with Gaussian distribution by selecting appropriate inside volume for submerged arc welding process. It has been revealed that for GMAW, best suitable heat source shape is a combination of semispherical and semioval.