Transactions of the Korean Society of Machine Tool Engineers (한국공작기계학회논문집)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Stress Analysis of Bonding Interface in the Dissimilar Friction Welded Joints

STS304와 Sl5C 이종마찰압접부의 접합계면 응력해석

  • 오정국 (조선대학교 기계공학부) ;
  • 차용순 (조선대학교 기계공학부) ;
  • 성백섭 (조선대학교 기계공학부) ;
  • 박창언 (목포대학교 기계선반해양공학부) ;
  • 김하식 (조선이공대학 컴퓨터응용기계공학부) ;
  • 김충환 (조선대학교 대학원)
  • Published : 2002.06.01
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Abstract

Friction welding has may merits such as energy efficiency, simple processing, etc. but it is difficult to obtain good welding at the welded interfaces and heat affected zone. It is discovered that stress singularity exists at the interferes and heat affected zone. The computer program based on boundary element method is utilized in this study. A mathematical model is implemented based on results from several experiments performed at and around the welded interfaces and heat affected zone of disimilar metals under static and dynamic loadings. This stay is to investigate the characteristics of the deformation and fracture behavior around interfaces for friction welded materials under static tensile load. Also, the stress distribution at the tip of crack is analyzed by using BU based on Kelvin's solution of 2-dimensional binding zone. The results of BEM are identical with those in case of considering interfaces of both heat affected zone. Also, stress singularity at the tip of interfaces appears when the elastic modulus ratio is 1.07.

Keywords

References

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