Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Analysis of Welding Distortion during the Production of Fuel Tanks for Excavators

연료탱크 제작시 시뮬레이션을 통한 용접변형 해석

  • 양영수 (전남대학교 기계공학과) ;
  • 김덕윤 ((주)명진기업) ;
  • 배강열 (경남과학기술대학교 메카트로닉스공학과)
  • Received : 2016.08.24
  • Accepted : 2016.09.13
  • Published : 2016.12.30
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Abstract

To attach a fuel tank to an excavator, two sets of mounting plates on which three bosses are attached are welded onto the tank. In this study, the welding process of a fuel tank for an excavator was modeled using a finite element numerical method. The tank was modeled as a simple plate to which the mounting plate or bosses were attached by fillet welding. Thermal and thermo-elasto-plastic analyses of the welding process were carried out to predict the temperature distribution and material distortion during welding, respectively. Three different welding sequences for the tank were also modelled to compare the deformation that occurred due to each welding sequence. The results of the analysis predicted that changing the welding sequence around the mounting plate could not position the boss within the allowable dimensional range. The results also revealed the sequence in which the maximum distortion of the bosses welded onto the tank was 30% less than the maximum distortion due to the other sequences.

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References

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