JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Finite Element Analysis on the Improvement of Residual Deformation of the Part After Pulse Laser Welding of Circular Cover
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
  • Journal title : Journal of Welding and Joining
  • Volume 33, Issue 6,  2015, pp.60-66
  • Publisher : The Korean Welding and Joining Society
  • DOI : 10.5781/JWJ.2015.33.6.60
 Title & Authors
Finite Element Analysis on the Improvement of Residual Deformation of the Part After Pulse Laser Welding of Circular Cover
Kim, Kwan-Woo; Cho, Hae-Yong;
  PDF(new window)
 Abstract
Molten zone shape of pulse laser welding is affected by welding conditions such as beam power, beam speed, irradiation time, pulse frequency, etc. and is divided into conduction type and keyhole type. It is necessary to design heat source model for irradiation of laser beam in the pulse laser welding. Shape variables and the maximum energy density value of the heat source model are different depending on the molten zone shape. In this paper, pulse laser welding simulation for joining of cylindrical part and circular cover was carried out. The heat source model for pulse laser beam with circular path was applied to the heat input boundary condition, radiative and conductive heat transfer were considered for the thermal boundary condition. For each phase, thermal and mechanical properties according to temperature were also applied to analysis. Analytical results were in good agreement with the molten zone size of specimen under the same welding conditions. So, the reliability of the welding simulation was verified. Finally, the improvements for reducing residual deformation after cover welding could be reviewed analytically.
 Keywords
Pulse laser;Welding;Heat source;Analysis;Residual deformation;
 Language
Korean
 Cited by
 References
1.
J.O. Kim, J.H. Lee, J. Suh, S.W. Lee, Welding characteristics of Metal bellows using a pulsed Nd:YAG laser, Journal of KSLP, 15-1 (2012), 10-14

2.
J.D. Kim, B.L. Kil, C.J. Lee, The Weldability of Laminated Stator Core for Motor by Pulsed Nd:YAG Laser [1], Journal of KSME, 30-5 (2006), 629-635

3.
Y.C. Liao, M.H. Yu , Effects of laser beam energy and incident angle on the pulse laser welding of stainless steel thin sheet, Journal of Materials Processing Technology, 190-1 (2007), 102-108 crossref(new window)

4.
T.J. Li, G.Q. Li, Y.B. Wang , Residual stress tests of welded Q690 high-strength steel box- and H- sections, Journal of Constructional Steel Research, 115 (2015), 283-289 crossref(new window)

5.
Z.W. Liu, D.Q. Zou, W.Z. Chen, W.N. Wang, Y. Fang , Residual Deformation Measurement of Laser Weldment Using the Laser Interferometry, Journal of Key Engineering Materials, 326-1 (2006) 63-66

6.
V. Hennion, J.M. Sprauel, H. Michaud , Residual Stress Evaluation by X-ray Diffractometry Application to Materials Surfaces with High Stress Gradients, International conference on residual stresses, 5-2 (1997), 670-675

7.
C.K. Lee, W.R. Lee , Analysis of Stress Distribution in the Laser Welding Process, Journal of KOSUR, 1-1 (2013), 6-12

8.
D.H. Bae, C. H. Kim, S.Y. Cho, J.K. Hong, C.L. Tsai , Numerical Analysis of Welding Residual Stress Using Heat Source Models for the Multi-Pass Weldment, Journal of Mechanical Science and Technology, 16-9 (2002), 1054-1064

9.
H.S. Bang, H.S. Bang , Numerical analysis on the residual stress and fracture toughness of the heavy thick steel welded joints by welding process, Journal of KWJS, 33-2 (2015), 32-39

10.
S.Y. Hwang, J.H. Lee, S.C. Kim, K.K. Viswanathan , Numerical Simulation of Welding Residual Stress Distribution on T-joint Fillet Structure, Journal of Ocean System Engineering, 2-2 (2012), 82-91 crossref(new window)

11.
K.W. Kim, G.J. Nam, J.H. Lee, J. Suh, H.Y. Cho , Finite element analysis for prediction of bead shape of Nd:YAG laser butt welding, Journal of KOSME, 32-1 (2008), 137-146

12.
K.W. Kim, J.H. Lee, J. Suh, H.Y. Cho , Finite element analysis for prediction of bead shape of Nd:YAG laser fillet welding, Journal of KSME, 21-1 (2007), 839-846