Prediction of Welding Deformation of Ship Hull Blocks

  • C. D. Jang (Department of Naval Architecture & Ocean Engineering, Seoul National University, RIMSE) ;
  • Lee, C. H. (Samsung Heavy Industries CO., LTD.)
  • Published : 2003.12.01

Abstract

Welding deformation reduces the accuracy of ship hull blocks and decreases productivity due to the need for correction work. Preparing an error-minimizing guide at the design stage will lead to higher quality as well as higher productivity. Therefore, developing a precise method to predict the weld deformation is an essential part of it. This paper proposes an efficient method for predicting the weld deformation of complicated structures based on the inherent strain theory combined with the finite element method. A simulation of a stiffened panel confirmed the applicability of this method to simple ship hull blocks.

Keywords

References

  1. JANG, C.D. AND SEO, S.I. 1996 A study on the automatic fabrication of welded built-up beams. Trans. of the Society of Naval Architects of Korea, 33(1), pp. 206-213
  2. KIM, S.I., HAN, J.M., CHO, Y.K., KANG, J.K. AND LEE, J.Y. 1997 A study on the accuracy control of block assembly in shipbuilding. ICCAS '97, pp. 367- 381
  3. MASUBUCHI, K. 1980 Analysis of welded structures. Pergamon Press, pp. 239-243
  4. MURAKAWA, H., Luo, Y. AND UEDA, Y. 1997 Prediction of welding deformation and residual stress by elastic FEM based on inherent strain. J. of the society of naval architects of Japan, 180, pp. 739-751
  5. SATOH, K. AND TERASAKI, T. 1976 Effect of welding conditions on welding deformations in welded structural materials. J. of the Japanese welding society, 45(4), pp. 302-308
  6. SEO, S.I. AND JANG, C.D. 1999 A study on the prediction of deformations of welded ship structures. Journal of Ship Production, 15(2), pp. 73-81
  7. TEKRIWAL, P. 1989 Three-dimensional transient thermo-elasto-plastic modeling of gas metal arc welding using the finite element method. Ph. D. thesis, U. of Illinois at Urbana-Champaign, Urbana, Ill., U.S.A
  8. UEDA, Y. AND MA, N.X. 1995 Measuring Methods of Three-Dimensional Residual Stresses with Aid of Distribution Function of Inherent Strains(Report 3). Trans. of Japanese Welding Research Institute, 24(2), pp. 123-130
  9. WATANABE, M. AND SATOH, K. 1965 Welding mechanics and its applications. Asakura Publication, pp. 367- 411