Error analysis of forward and reverse heat conduction and convection calculations considering uncertainties in welding
Source: Science and Technology of Welding & Joining, Volume 14, Number 7, October 2009 , pp. 662-668(7)
Publisher: Maney Publishing
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Abstract:
Numerical models of fusion welding traditionally compute temperature field for a given set of welding conditions in a forward manner. The reliability of computed temperature profile depends on the accuracy of a number of model input parameters, values of which are uncertain in nature. Here, the authors show that a genetic algorithm (GA) assisted integrated numerical model, following either convection or conduction based calculations, can identify the suitable values of the uncertain model input parameters and in turn provide reliable computed results. Powered with GA, the integrated model is used further in a reverse manner to predict multiple sets of welding conditions for a target weld geometry. The convection based calculations have been able to provide more reliable multiple welding variables in reverse calculations.Keywords: FUSION WELDING; FINITE ELEMENT METHOD; FLUID FLOW; GENETIC ALGORITHM
Document Type: Research article
DOI: 10.1179/136217109X12464549883376
Affiliations: 1: Mechanical Engineering Department, IIT Bombay, Powai, Mumbai 400076, India 2: Mechanical Engineering Department, IIT Bombay, Powai, Mumbai 400076, India;, Email: amit@iitb.ac.in
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