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JWJ > Volume 27(3); 2009 > Article
Journal of KWJS 2009 June;27(3) :44-51.
Published online July 6, 2009.
Analysis of Welding Distortion for Laser Welded Sheet Metal Structures of Aluminum Alloy
Ki-Bo Kwon, Jae-Woong Kim, Cheol-Hee Kim


Correspondence:   Published online July 6, 2009
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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