Welding in the World

, Volume 54, Issue 7–8, pp R234–R240 | Cite as

Determination of Dominant Factors in High Accuracy Prediction of Welding Distortion

  • You-Chul Kim
  • Jae-Yik Lee
  • Koutarou Inose


The experiment was carried out using a bead-on-plate specimen with the groove placed to accurately predict welding distortion. The experiment was simulated with thermal elastic-plastic analysis based on FEM. Comparing and investigating both results, the dominant factors for high accuracy prediction of welding distortion were determined. In the thermal elastic-plastic analysis, the yield condition should be satisfied regardless of the magnitude of yield stress of the material. It was not known if the predicted results of welding distortion obtained without satisfying the yield condition in the whole temperature range were overestimated or underestimated. The accuracy of prediction of welding distortion was improved by applying heat input to the weld metal bead shape, not just the groove profile. It was determined that satisfying the yield condition in the entire temperature range and considering the weld metal shape as the deposited metal were the dominant factors for high accuracy prediction of welding distortion.

IIW-Thesaurus keywords

Deformation Distortion Influencing factors Precision Prediction Simulating Temperature Welding 


  1. [1]
    Kim Y.-C.: Development of tool for predicting welding distortion with high accuracy, Special Session of JWS, 2003, pp. 21–22 (in Japanese).Google Scholar
  2. [2]
    Kim Y.-C., Lee J.-Y, Inose K.: The high accurate prediction of welding distortion generated by fillet welding, Quarterly Journal of the Japan Welding Society, 2005, vol. 23, no. 3, pp. 431–435 (in Japanese).CrossRefGoogle Scholar

Copyright information

© International Institute of Welding 2010

Authors and Affiliations

  1. 1.Joining and Welding Research InstituteOsaka UniversityOsakaJapan
  2. 2.IHI CorporationYokohamaJapan

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