DOI QR코드

DOI QR Code

Shape Optimization Considering Fatigue Life of Pulley in Power-Steering Pulley

파워스티어링 오일펌프용 풀리의 피로수명을 고려한 형상최적화

  • Published : 2006.09.01

Abstract

The pulley is one of core mechanical elements in the power steering system for vehicles. The pulley operates under both the compressive loading and the torque. Therefore, to assure the safety of the power steering system, it is very important to investigate the durability and the optimization of the pulley. In this study, the applied stress distribution of the pulley under high tension and torsion loads was obtained by using finite element analysis. Based on these results the fatigue life of the pulley with the variation of the fatigue strength was evaluated by a durability analysis simulator. The results at 50% and 1% for the failure probability were compared with respect to the fatigue life. In addition to the optimum design for the fatigue life is obtained by the response surface method. The response function utilizes the function of the life and weight factors. Within range for design life condition the minimization of the weight, one of the formulation, is obtained by the optimal design. Moreover the optimum design by considering its durability and validity is verified by the durability test.

Keywords

Durability Analysis;Fatigue Life;Pulley;Probabilistic S-N Curve;Response Surface Method

References

  1. Gaeta A., La Monaca A., and F. Frasca' 2003, 'Acombined Optimisation of Automotive Body Joints,' JSAE 20037074, SAE 2003-01-2797
  2. Murali M. R. K. and Kuldip Raina, 2000, 'Finite Element Shape Optimization of a Power-Take-Off Housing Unit,' SAE 2000 World congress Detroit, 2000-01-0118
  3. Mahmood M. S. and Davood R., 2003, 'Analysis and Optimization of a Composite Leaf Spring,' composite structure 60 pp. 317-325 https://doi.org/10.1016/S0263-8223(02)00349-5
  4. Hong Jea Yim, Min Soo Kim, June Park and Seung Jin Reo, 2005, 'Shape Optimization of Bumper Beam Cross Section for Low Speed Crash,' SAE 2005 World Congress Detroit, 2005-01-0880
  5. American Standard of Testing Materials, 2004, 'Standard Test Methods for Tension Testing of Metallic Materials,' E8M-04
  6. MSC. software, 2004, MSC.PA TRAN Users guide, Ver. 2004
  7. MSC. software, 2004, MSC.NASTRN Users guide, Ver. 2004
  8. MSC software, 2004, MSC.FATIGUE Quick start guide, Ver. 2004
  9. Myers, R. H. and Montgomery D. C., 1995, 'Response Surface Methodology - Process and Product Optimization Using Designed Experiments,' John wiley & Sons, New York. pp. 303-427
  10. Box, G. E. P. and Wilson, K. B., 1951, 'Journal of the Royal Statistical Society,' Series B., 13, pp. 1-45
  11. Andre I. Khuri and John A. Cornell, 1996, ' Response Surfaces Designs and Analyses,' pp. 120-150