Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Numerical Simulation of friction Stir Spot Welding Process with AA5083-H18

AA5083-H18 판재의 마찰 교반 점 용접 공정에 대한 전산 해석

  • Kim, Don-Gun ;
  • Badarinarayan, Harsha ;
  • Ryu, Ill ;
  • Kim, Ji-Hoon ;
  • Kim, Chong-Min ;
  • Okamoto, Kazutaka ;
  • Wagoner, R.H. ;
  • Chung, Kwan-Soo
  • 김돈건 (서울대 재료공학부) ;
  • ;
  • 유일 (스탠포드 대학원 재료공학부) ;
  • 김지훈 (오하이오주립대 재료공학부) ;
  • 김종민 (제너렁 모터스 재료 공정 연구소) ;
  • ;
  • ;
  • 정관수 (서울대 재료공학부)
  • Published : 2009.05.07
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Abstract

Thermo-mechanical simulation of the Friction Stir Spot Welding (FSSW) processes was performed for the AA5083-H18 sheets, utilizing commercial Finite Element Method (FEM) and Finite Volume Method (FVM) which are based on Lagrangian and Eulerian formulations, respectively. The Lagrangian explicit dynamic FEM code, PAM-CRASH, and the Eulerian Computational Fluid Dynamics (CFD) FVM code, STAR-CD, were utilized to understand the effect of pin geometry on weld strength and material flow under the unsteady state condition. Using FVM code, material flow pattern near the tool boundary was analyzed to explain the weld strength difference between the weld by cylindrical pin and the weld by triangular pin, while the frictional energy concept using the FEM code had limitation to explain the weld strength difference.

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