Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
권호 표지
DOI QR코드

DOI QR Code

Welding Deformation Analysis of Plates Using the Inherent Strain-based Equivalent Load Method

고유변형률 기반 등가하중법을 이용한 판의 용접변형 해석

  • Lee, Joo-Sung (School of Naval Architecture and Ocean Engineering, University)
  • 이주성 (울산대학교 조선해양공학부)
  • Received : 2009.11.02
  • Accepted : 2010.03.31
  • Published : 2010.04.30
Download PDF
⟨ Previous Next ⟩

Abstract

IIn this study, used is the equivalent loading method based on the inherent strain to predict the welding deformation of panel members. Equivalent loads are computed from the inherent strain distribution around weld line, and then applied for the linear finite element analysis. Thermal deformation of panel members can be, of course, carried out through the rigorous thermal elasto-plastic analysis procedure but it is not practical in applying to predicting the welding deformation of large structures such as blocks found in a ship structure from view of computing time. The present equivalent load approach has been applied to flat plate model to verify the present approach, and to several curved plate models having the curvature in the welding direction to investigate the effect of the longitudinal curvature upon the weld-induced deformation. The results are compared with those by thermal elasto-plastic analysis. As far as the present results are concerned, it can be said that the present approach shows good agreement with the results by welding experiment and the rigorous thermal elasto-plastic analysis. The present approach has been also applied to predict the welding deformation of panel block as for application illustration to practical model.

Keywords

References

  1. K. Masubuchi : Analysis of Welded Structures, Pergamon Press, Oxford, 1980
  2. P. Michaleris and A. DeBiccari : Prediction of Welding Distortion, Welding Journal, 76-44(1997), 172s-180s
  3. S.I Kim : Develop of Welding Deformation Control Method for Hull Structure, PhD thesis, Univ. of Ulsan(1999) (in Korean)
  4. S.I. Kim : Development of Simple Prediction Model for V-groove Butt Welding deformation, J. of the Society of Naval Architects of Korea, 41-2(2004), 106-113(in Korean) https://doi.org/10.3744/SNAK.2004.41.2.106
  5. D.H. Shin, S.B. Shin and J.S. Lee : A Study on the Prediction of Welding Distortion and Residual Stress for Channel I Butt SA Weldment using FE Analysis, Proceedings of the Korean Society of Ocean Engineers Autumn Meeting (2006), 189-192 (in Korean)
  6. C.D. Chang and S.I. Seo : Calculation of Residual Stresses by Thermal Elasto-Plastic Analysis, Journal of the Korean Welding & Joining Society, 6-4 (1988), 35-43 (in Korean)
  7. Y. Luo, M. Ishayama and H. Murakawa : Study on Welding Deformation of Plate with Longitudinal Curvature, Yosetsu Kozo Shinpojiumu Koen Ronbunshu, Vol. 1999(1999), 311-317 (in Japanese)
  8. C.H. Lee : Prediction of Welding Deformation of Ship Hull Panel Blocks using Equivalent Loading Method Based on Inherent Strain, PhD thesis, Seoul National Univ.(2002) (in Korean)
  9. C.D. Jang, Y.S. Ha, D.E. Ko and S.C. Moon : Determination of Inherent Strain Regions to Estimate Plate Deformation by Line Heating, J. of the Society of Naval Architects of Korea, 39-1(2002), 82-89(in Korean) https://doi.org/10.3744/SNAK.2002.39.1.082
  10. Y. Takeda : Prediction of Butt Welding Deformation of Curved Shell Plates by Inherent Strain Method, J. of Ship Production, 18-2(2002). 99-104
  11. J.S. Lee and D.Y. Lim : Thermal Deformation of Curved Plates by Line Heating, J. of Ocean Engineering and Technology, 19-1(2005), 33-38 (in Korean)
  12. S.H. Lee, Y.N. Ahn and J.S. Lee : A Study on the Deformation Characteristics of Plates Having Curvature due to Line Heating, Proceedings of the Korean Society of Ocean Engineers Autumn Meeting(2009), 188-191
  13. Commission of Design, Analysis and Structural Strength of Welded Structures : Standardization of Temperature Distribution Prediction of the Arc Weld using FEA, Journal of the Korean Welding & Joining Society, 23-6(2005), 497-503 (in Korean)
  14. J. Goldak, A. Chakravarti and M. Bibby : A New Finite Element Model for Welding Heat Sources, Metallurgical Transactions B, 15B(1984), 299-305 https://doi.org/10.1007/BF02667333
  15. Y. V. L. N. Murphy, G. Venkata Rao and P. Krishna Iyer : Numerical simulation of welding and quenching process using transient thermal and thermo-elasto-plastic, Computer&Structures, 60-1 (1996), 131-154 https://doi.org/10.1016/0045-7949(95)00359-2

Cited by

  1. Friction Stir Welding Analysis Based on Equivalent Strain Method using Neural Networks vol.28, pp.5, 2014, https://doi.org/10.5574/KSOE.2014.28.5.452