Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Thermal and mechanical analysis on friction stir welding of AZ31 magnesium alloy by the finite element method

유한요소법에 의한 AZ31마그네슘 합금의 마찰교반용접시 유동 및 강도 해석

  • Kang, Dae-Min (Department of Mechanical Engineering, Pukyung National University) ;
  • Park, Kyoung-Do (Department of Mechanical Engineering, Pukyung National University) ;
  • Jung, Yung-Suk (Department of Mechanical & Automotive Engineering, Pukyung National University)
  • 강대민 (부경대학교 기계공학과) ;
  • 박경도 (부경대학교 생산자동화공학과 대학원) ;
  • 정영석 (부경대학교 기계자동차공학과)
  • Received : 2012.07.04
  • Accepted : 2013.04.22
  • Published : 2013.08.31
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Abstract

In this paper, finite element method was used for flow and strength analysis of AZ31 magnesium alloy under friction stir welding. The simulations were carried out by SYSWELD s/w, and the modeling of sheet was doned by unigraphics NX3 s/w. Welding variables for analysis were rotating speed and welding speed of tool. Also two-way factorial design method was applied to confirm the effect of welding variables on maximum temperature and stress of material used. From these results, the increaser welding speed of tool the decreaser maximum temperature, but the increaser maximum stress. Also the increaser rotating speed of tool the increaser maximum temperature, but the decreaser maximum stress. In addition the increaser welding speed of tool and the decreaser rotating speed of tool, the narrower heat effect zone. Finally rotating speed of tool influenced on maximum temperature more than welding speed of tool, and welding speed of tool influenced on maximum stress more than rotating speed of tool from the variance analysis.

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References

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