International Journal of Automotive Technology

  • 제8권3호
  • /
  • Pages.309-317
  • /
  • 2007
  • /
  • 1229-9138(pISSN)
  • /
  • 1976-3832(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

OPTIMAL SHAPE DESIGN OF THE FRONT WHEEL LOWER CONTROL ARM CONSIDERING DYNAMIC EFFECTS

  • Kang, B.J. (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Sin, H.C. (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Kim, J.H. (School of Mechanical and Aerospace Engineering, Seoul National University)
  • 발행 : 2007.06.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, we conducted a vibration fatigue analysis of the lower control arm in a vehicle suspension system. The vehicle was driven during the tests so that the dynamic effects could be taken into account. The dynamic load of the frequency domain was superimposed on the frequency response analysis. We performed a virtual proving ground test using multi-body dynamics, along with a finite element analysis and fatigue life predictions. Shape optimization was also considered using the design of the experimental approach, and a response surface analysis was performed to improve the durability performance of the lower control arm. We identified the elements that had the most influence on the optimal shape of the finite element model and analyzed the sensitivity of those elements. Then the optimal points that minimized the amount of damage to the areas of interest were determined through a response surface analysis. The results suggested that the fatigue life of the model increased as its mass was not increased excessively, and demonstrated that these design procedures yielded an appropriate optimized lower control arm model.

키워드

참고문헌

  1. Bendat, J. S. (1964). Probability functions for random responses. NASA Report on Contract, NAS-5-4590
  2. Berzri, M., Dhir, A., Ranganathan, R., Balendran, B. and Jayakumar, P. (2004). A new tire model for road loads simulation: Full vehicle validation. SAE Paper No. 2004-01-1579
  3. Bishop, N. W. M. (1988). The Use of Frequency Domain Parameters to Predict Structural Fatigue. University of Warwick. Ph. D. Dissertation. Coventry. UK
  4. Bishop, N. W. M. and Sheratt, F. (1989). Fatigue life prediction from power spectral density data. Environmental Engineering, 2, 11-19
  5. Bishop, N. W. M., Steinbeck, J. and Sherratt, F. (2000). Finite Element Based Fatigue Calculations (NAFEMS). Glasgow, UK
  6. Choi, B. L., Choi, J. H. and Choi, D. H. (2005). Reliabilitybased design optimization of an automotive suspension system for enhancing kinematic and compliance characteristics. Int. J. Automotive Technology 6, 3, 235-242
  7. Choi, K. K., Youn, B. D., Tang, J. and Hardee, E. (2005). Reliability-based analysis and design optimization for durability. Proc. SPIE-Int. Soc. Opt. Eng. 5805, 1, 74-84
  8. Dirlik, T. (1985). Application of Computers in Fatigue Analysis. University of Warwick. Ph. D. Dissertation. Coventry. UK
  9. Ghosh, S. and Medepalli, S. (2005). Effect of tire stiffness on vehicle loads. SAE Paper No. 2005-01-0825
  10. Haiba, M., Barton, D. C., Brooks, P. C. and Levesley, M. C. (2003). Using a quarter-vehicle multi-body model to estimate the service loads of a suspension arm for durability calculations. Proc. Instn. Mech. Engrs. Part K: J. Muti-body Dynamics, 217, 121-133
  11. Heinrietz, A., Lehrke, H. P., Rupp, A. N. and Barthel, C. (2003). Identification of parametric tire models for the fatigue evaluation of suspension components. SAE Paper No. 2003-01-1276
  12. Jung, D. H. and Bae, S. I. (2005). Automotive component fatigue life estimation by frequency domain approach. Key Engineering Materials 297, 300, 1776–1783
  13. Kim, G. H., Noh, K. H., Kim, D. S. and Ko, W. H. (2003). Development of Reliability/Durability Evaluation for Vehicle and Components Applied by Virtual Testing Technology. Body and Chassis Engineering Laboratory. KATECH. Korea
  14. Kim, H. S., Yim, H. J. and Kim, C. B. (2002). Computational durability prediction of body structures in prototype vehicles. Int. J. Automotive Technology 3, 4, 129-135
  15. Lee, S. B., Han, W. S. and Yim, H. J. (2003). Fatigue analysis of automotive suspension system considering dynamic effect. SAE Paper No. 2003-01-2814
  16. Lee, Y. L., Pan, J., Hathaway, B. R. and Barkey, E. M. (2005). Fatigue Testing and Analysis. Elsevier. New York
  17. Mechanical Dynamics Inc. (1998). MSC/ADAMS User Manual. Irvine. CA. USA
  18. MSC Software Co. (2003). MSC/FATIGUE Quick Start Guide. Santa Ana. CA. USA
  19. MSC Software Co. (2002), MSC/NASTRAN 2001 Reference Manual. Santa Ana. CA. USA
  20. Park, S. H. (2003). Design of Experiments. Minyoung- Sa. Daejeon. Korea
  21. Phadke, M. S. (1989). Quality Engineering Using Robust Design. Prentice Hall. New Jersey