Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Finite Element Analysis of Residual Stress by Cold Expansion Method with Clamping Force in the Plate having Adjacent Holes

인접홀에서 홀확장법과 체결력 고려시, 발생하는 잔류응력 분포에 대한 유한요소해석

  • 양원호 (성균관대학교 기계 공학과) ;
  • 조명래 (인덕대학 컴퓨터응용설계) ;
  • 장재순 (성균관대학교 기계 공학과)
  • Published : 2006.05.01
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Abstract

The cold expansion method (CEM) is one of the widely used a method to improve the fatigue behavior of materials in aerospace industry. Such improvement is due to the compressive residual stress developed when a tapered mandrel goes through the fastener holes a little smaller than the mandrel. CEM is retarded of crack initiation due to the compressive residual stress developed on the hole surface. Many researchers are studied a finite element analysis of residual stress around fastener hole. But in case of real model, fastener hole has a clamping force after CE. Therefore, it is respected that residual stress distributions should be changed due to clamping forces. In this paper, it was performed finite element analysis of residual stress by clamping force after CE in the plate having adjacent holes. From this study, it has been found that compressive residual stress near the hole increases according to clamping force. Also, the more increase clamping force, the more increases compressive residual stress. However, tensile residual stress increase beyond clamping force area.

Keywords

References

  1. Pavier, M. J., 'A finite element simulation of the cold working process for fastener holes,' J. Strain Anal. Vol. 32, pp. 287-300, 1997 https://doi.org/10.1243/0309324971513418
  2. Papanikos, P. and Mequid, S. A., 'Elasto-plastic finite element analysis of the cold expansion of adjacent fastener holes,' J. Mater. Process. Technol. Vol. 89-90, pp. 424-428, 1999 https://doi.org/10.1016/S0924-0136(99)00154-5
  3. Kim, C., Kim, D. J., Seok, C. S. and Yang, W. H., 'Finite element analysis of the residual stress by cold expansion method under the influence of adjacent holes,' J. Mater. Process. Technol., Vol. 153-154, pp. 986-991,2004 https://doi.org/10.1016/j.jmatprotec.2004.04.271
  4. Kim, C., Yang, W. H., Sung, G D. and Go, M. H., 'Analysis of residual stresses induced by shot peeing using finite element method,' J. Korean Soc. Automotive Eng., Vol. 9, pp. 198-204,2001
  5. Lee, D. S. and Lee, J. H., 'A Study on the Prediction of Fatigue Crack Initiation Life of Hole Expansion Plate,' J. Korean Soc. Precision Eng., Vol. 20, No.2, pp. 129-135,2003
  6. Ball, D. L., 'Elastic-plastic stress-analysis of cold expanded fastener holes,' Fatigue and Fracture of Engineering Materials and Structures, Vol. 18, No.1, pp. 47-63, 1995 https://doi.org/10.1111/j.1460-2695.1995.tb00141.x
  7. Kang, J., Johnson, W. S. and Clarck, D. A., 'Threedimensional finite element analysis of the cold expansion of fastener holes in two aluminium alloys,' Journal of Engineering materials and Technol., Vol. 124, pp. 140-145,2002 https://doi.org/10.1115/1.1448922
  8. ABAQUS User's Manual, Ver. 6.4, HKS Inc., USA