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JWJ > Volume 25(1); 2007 > Article
Journal of KWJS 2007 February;25(1) :49-56.
Published online March 26, 2007.
A Study on the Distortion of a Thin Plate Panel by Laser Welding
Choong-Gi Kim, Jae-Woong Km, Ki-Chul Kim


Correspondence:   Published online March 26, 2007
ABSTRACT
  Prediction and control of the thermal distortion is particularly important for the design and manufacture of welded thin plate panel. In this study, experiments and computations are performed to analyze efect of a hole configuration and a specimen size on distortion. In adition, this study aims to develop a thermal elasto-plastic simulation using finite element method to predict distortion, with particular emphasis on buckling deformation generated in plates welded around hole.
  From the experiments, the severe distortion apeared in the weldments by the laser welding proces, in which the specimen size plays an important role on the distortion but the hole configuration showed litle efect. And the results of numerical analysis were corresponded well with the experiment ones. Thus, a thermal elasto-plastic analysis model for predicting the weld distortion of thin plate panel was sucesfully developed through this study.
Keywords: Laser welding;Thin plate panel;Thermal distortion;Buckling deformation;Finite element method
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