Analysis of Stress Singularities on Interfaces of Friction Welded Dissimilar Materials

마찰용접에 의한 이종재 접합계면에 대한 응력특이성의 해석

  • Published : 2005.03.01

Abstract

In this paper, the stress singularity on interface of friction welded dissimilar materials was investigated by using 2-dimensional elastic boundary element method. It is required that stress distributions and stress singularities on an interface for friction welded dissimilar materials analize to establish strength evaluation. The stress singularity index ($\lambda$) and stress singularity factor ($\Gamma$) were calculated from the results of stress analysis. The stress singularities on variations for shapes and thickness of friction welded flashes were analized and discussed. This paper suggested that the strength evalution by using the stress singularity factors as fracture parameters, considering the stress singularity on an interface edge of friction welded dissimilar materials were very useful.

Keywords

References

  1. H. S. Jeong and T. Shinda, 'Fundamentals and Basic Application of Friction Welding,' J. of KWS, Vol.9, No.6, p.1, 1997
  2. S. K. Oh, 'Real-time Evolution of Automatic Production Quality Control for Friction Welding Machine,' J. of KSME, Vol.9, No.6, pp.757-766, 1985
  3. '最近摩擦鎔接の 適用,' 溶接技術 Vol.50, No.9, pp.104-107, 2002
  4. K. S. Kim, H. S. Kim and N. Y. Chung, 'Analysis of Stress Singularity on Ceramic/Metal Bonded Joints,' J. of KSME, Vol.20, No.10, pp.3058-3067, 1996
  5. K. S. Kim, H. S. Kim and N. Y. Chung, 'Evalution of Static Strength on Ceramic/Metal Bonded Joints Considering Stress Singularity,' J. of KSMTE, Vol.6, No.1, pp.59-68, 1997
  6. N. Y. Chung and J. H. Yi, 'Evalution Method of Bonded Strength in Adhesively Bonded Structures of the Aluminum Alloys,' J. of KSMTE, Vol.8, No.1, pp.35-44, 1999
  7. N. Y. Chung, S. I. Park, M. D. Lee and C. H. Park, 'Ultrasonic Detection of Inerface Crack in Adhesively Bonded DCB Joints,' Int. J. Automotive Technology, Vol.3, No.4, pp.157-163, 2002
  8. D. G. Lee, S. Y. Lee, J. K. Jung and J. Zhang, 'An Evaluation of Fatigue Properties on Dissimilar Friction Weld of Heat-Resisting Steels Used in Vehilce Valves,' Journal of KSAE, Vol.10, No.2, pp.186-192, 2002
  9. S. O. Oh, C. W. Hue, J. W. Yoo and J. C. Kim, 'A Study on the Rupture and Crack Propagation Characteristics in the M terial Friction-Welded with Hetrogeneous Steels of 40C and STS304,' J. of KWS, Vol.10, No.4, pp.230-239, 1992
  10. D. B. Bogy, 'The Plane Solution for Joined Dissimilar Elastic Semistrips under Tensions,' J. Appl. Mech, Vol.42, pp.93-98, 1975 https://doi.org/10.1115/1.3423560
  11. J. Dunders, 'Discussion of Edge-Bonded Dissimilar Orthogonal Elastic Wedges under Normal and Shear Loading,' J. Appl. Mech, Vol.36, pp.650-652, 1969 https://doi.org/10.1115/1.3564739