Modeling of a Multi-Leaf Spring for Dynamic Characteristics Analysis of a Large Truck

대형트럭 동특성 해석을 위한 다판 스프링의 모델링

  • 문일동 (타타대우상용차(주)) ;
  • 오석형 (군산대학교 기계공학부) ;
  • 오재윤 (전북대학교 기계항공시스템공학부 MRC)
  • Published : 2004.10.01

Abstract

This paper presents an analytical modeling technique fer representing a hysteretic behavior of a multi-leaf spring used for a large truck. It divides a nonlinear hysteretic curve of the multi-leaf spring into four parts; loading part, unloading part and two transition parts. It provides conditions fur branching to a part of the curve corresponding to a current multi-leaf spring status. This paper also presents a computational modeling technique of the multi-leaf spring. It models the multi-leaf spring with three links and a shackle. It assumes those components as rigid bodies. The links are connected by rotational joints, and have rotational springs at the joints. The spring constants of the rotational springs are computed with a force from the analytical model of the hysteretic curve of the multi-leaf spring. Static and dynamic tests are performed to verify the reliability of the presented techniques. The tests are performed with various amplitudes and excitation frequencies. The hysteretic curves from the tests are compared with those from the simulations. Since th e presented techniques reproduce the hysteretic characteristic of the multi -leaf spring faithfully, they contribute on improving the reliability of the computational model of a large truck.

Keywords

References

  1. Kim, D. W., Lim, J. H., 'A Study on Improving Ride Quality of the Commercial Vehicle,' J. of the KSAE, Vol.4, No.6, pp.229-235, 1996
  2. Park, T. W., Yim, H. J., Lee, G. H., Park, C. J., Jeong, I. H., 'Development of a Leaf Spring Modeling Method for Dynamic Analysis of a Mini-Bus,' J. of the KSAE, Vol.6, No.6, pp.1-6, 1998
  3. Francher, P. S., Ervin, R. D., MacAdam, C. C., Winkler Author, C. B., 'Measurement and Representation of the Mechanical Properties of Truck Leaf Springs,' Highway Safety Research Institude, The Univ. of Michigan, SAE 800905, 1980
  4. Moon, I. D., Oh, C. Y.,' A Study on the Effects of Hysteretic Characteristics of Leaf Springs on Handling and Stability of a Large-sized Truck,' J. of the KSAE, Vol. 9, pp.157-164, 2001
  5. MSC.ADAMS, 'ADAMS User's Manual,' MacNeal-Schwendler Corporation., U.S.A., 2001
  6. DADS User's Manual, Computer Aided Design Software, Inc., Oakdale, IA, U.S.A.
  7. MSC.NASTRAN User's Manual, MacNeal- Schwendler Corporation, U.S.A., 1994
  8. Yamamoto, E., Hamano, T., Enomoto, H., Numazaki, I., 'Characteristic of Hysteresis Curve of the Leaf spring,' ISUZU Advanced Engineering Center Ltd, Japen, SAE 9530751, 1995
  9. Antoun, R. J., Hackert, P. B., O'Leary, M.C., Sitchin, A., 'Vehicle Dynamic Handling Computer Simulation-Model Development, Correlation and Application Using ADAMS,' SAE Technical Paper 860574, 1986
  10. Zadeh, A. G., Fahim, A., Gindy, M. E., 'Neuro-Leaf Spring,' Heavy Vehicle System Vol.7, No.4, 2000 https://doi.org/10.1504/IJHVS.2000.005260
  11. Judd, E. H., 'Spring Design Manual,' Society of Automotive Engineers, Inc., 400 Commonwealth Drive, Warrendale, 1996