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http://dx.doi.org/10.5781/KWJS.2009.27.3.044

Analysis of Welding Distortion for Laser Welded Sheet Metal Structures of Aluminum Alloy  

Kwon, Ki-Bo (Dept. of Mechanical Engineering, Graduate School of Yeungnam University)
Kim, Jae-Woong (School of Mechanical Engineering, Yeungnam University)
Kim, Cheol-Hee (Production Technology Center, Korea Institute of Industrial Technology)
Publication Information
Journal of Welding and Joining / v.27, no.3, 2009 , pp. 44-51 More about this Journal
Abstract
In this study, welding distortion analysis is performed for various design of tube shape structures which are assembled with aluminum sheet metal. Aluminum 5052 plates of 1mm thickness are used to analyze. An efficient keyhole model, as a welding heat source, is used for the prediction of full penetration weld size and shape which is required for the thermal analysis. The thermal and mechanical material properties are considered as temperature dependent functions, due to the high temperature variations during the welding. The numerical model is calculated by using a commercial software and evaluated with the experiments. The calculation results could make a comparative study in the view of distortion for the various size and shape of structure.
Keywords
Welding distortion; Finite element method(FEM); Aluminium alloy; Laser beam welding(LBW); Keyhole model;
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