Axial Stiffness Analysis of a Clutch Diaphragm Spring in Passenger Cars

승용차용 클러치 다이아프램 스프링의 축방향 강성해석

  • 김정윤 (대구가톨릭대학교 기계자동차공학부) ;
  • 김진곤 (대구가톨릭대학교 기계자동차공학부) ;
  • 윤현중 (대구가톨릭대학교 기계자동차공학부)
  • Received : 2010.07.12
  • Accepted : 2010.11.01
  • Published : 2010.12.31

Abstract

This article deals with the numerical analysis results of stiffness of diaphragm spring used in the clutch of a manual transmission. In order to investigate the relationship of the force and displacement in a diaphragm spring, we have established a numerical model of diaphragm spring using a well-known analytic model of Belleville spring and a cantilever beam model for the finger part of diaphragm spring. Using the stress and strain relations of Belleville spring and cantilever beam, we propose the analytic equation of motion of diaphragm spring for the use of a clutch automated actuator in an automated manual transmission. The proposed analytic model represents the typical dynamic characteristics of diaphragm spring along with the release bearing travel. And it is characterized in a closed-form equation, therefore it can be used for the further study of development of actuator and control law of clutch automating mechanism.

Keywords

References

  1. J. Y. Kim, et. al., 2007, "Development of Shift-By-Wire System for an Automatic Transmission Equipped Vehicle," Transactions of the KSAE, Vol. 15, No. 4, pp. 41-46.
  2. J. O. Almen and A. Laszlo, 1936, "The Uniform-Section Disk Spring," Transactions of the ASME, Vol.58, pp. 305-315.
  3. G. Curti and R. Montanini, 1999, "On the Influence of Friction in the Calculation of Conical Disk Springs," Journal of Mechanical Design, Vol. 121, pp. 622-627. https://doi.org/10.1115/1.2829508
  4. C.-Y. Lee, et. al., 2000, "Finite Element Analysis and Optimal Design of Automotive Clutch Diaphragm Spring," Transactions of the KSME, Vol. 24, No.6, pp. 1616-1623.
  5. Y. Doman, T. Fujii, K. Okubo and H. He, 2003, "Influence of Residual Stress on the Load-Deflection Curve of Diaphragm Springs for Automotive Clutches," JSAE Review, Vol. 24, pp. 197-203. https://doi.org/10.1016/S0389-4304(02)00299-0
  6. B. Lee, 2006, "Load Characteristics and Sensitivity Analysis for an Automotive Clutch Diaphragm Spring," Transactions of KSAE, Vol. 14, No. 1, pp. 54-59.
  7. B. Lee, 2008, "Automotive Manual Transmission Clutch System Modeling for Foot Effort Hysteresis Characteristics Prediction," Transactions of KSAE, Vol. 16, No. 5, pp. 164-170.
  8. S. J. Lee and J. H. Kim, 2003, "A Study on the Stiffness of Frustum-shaped Coil Spring," Journal of the Korea Society For Power System Engineering, Vol. 7, No. 4, pp. 49-54.