A Study on the Clamping Force of an Automotive Air-conditioning Hose according to the Friction Coefficient

마찰계수를 고려한 자동차용 에어컨 호스의 체결력에 관한 연구

  • 백재권 (부경대학교 대학원 기계설계공학과) ;
  • 김병탁 (부경대학교 기계설계공학과)
  • Received : 2011.02.24
  • Accepted : 2011.06.20
  • Published : 2011.06.30

Abstract

The automotive air conditioning hose is used for connecting the components of air conditioner in a vehicle. The hose is usually manufactured by the swaging process to connect the rubber hose with the metal fitting at the end of the hose. In case that the clamping force is small, the refrigerant gas in the hose can leak locally under the severe operating circumstances. The practical test of clamping force is performed by means of the measurement of separation force. In this study, the swaging process of a hose is simulated with the finite element method, to investigate the effect of friction coefficient on the clamping force. The contact condition is used in consideration of real manufacturing process, and the material properties for the Mooney-Rivlin model is obtained by the experimental results. The result interpretations are focused on the contact forces, which is displayed graphically with respect to friction coefficient, on the surfaces between the hose and the metal fittings.

Keywords

References

  1. 백재권, 김병탁, 김태호, 한성렬, 최재혁, "상이격자 밀도를 사용한 자동차용 에어컨 호스의 접촉해석", 한국동력기계공학회, 춘계학술대회논문집, pp. 196-202, 2010.
  2. Piela, A., "Analysis of the Metal Flow in Swaging -Numerical modelling and Experimental Verification", Int. J. Mech. Sci., Vol. 39, No 2, pp. 221-231, 1997. https://doi.org/10.1016/0020-7403(96)00056-2
  3. 김형제, 김병탁, 김광희, 윤문철, "동력 조향장치용 호스와 금속 용구사이의 접촉력에 관한 연구", 한국동력기계공학회, 추계학술대회 논문집, pp. 140-146, 2004.
  4. 김형제, 김병탁, "고압호스 부품의 체결력에 관한 연구", 한국기계가공학회, 춘계학술대회논문집, pp. 335-339, 2006.
  5. 김형제, 김병탁, 윤문철, "동력조향장치 호스 조립품의 이탈력 추정에 관한 연구", 한국자동차공학회논문집, Vol. 13, No. 4, pp. 190-196, 2005
  6. James, A. G., Green, A. and Simpson, G. M., "Strain Energy Functions of Rubber I. Characterization of Gum Vulcanizates", Journal of Applide Polymer Science, Vol, 19, pp. 2033-2058, 1975.
  7. Bathe, K. J., "Finite Element Procedures in Engineering Analysis", Prentice-Hall, pp. 335-341, 1982.
  8. Baek, J. K. and Kim, B. T., "Effect of the Friction Coefficient on the Deformation Characteristics of an Automotive Air-conditioning Hose in Manufacturing Process", International Symposium on Advanced Mechanical and Power Engineering, Fukui, 2010.