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공진 주파수를 고려한 차량 섀시 부품의 피로해석
Fatigue Analysis of Vehicle Chassis Component Considering Resonance Frequency 원문보기

한국공작기계학회논문집 = Transactions of the Korean society of machine tool engineers, v.13 no.6, 2004년, pp.94 - 101  

이상범 (국민대학교 자동차공학전문대학원) ,  임홍재 (국민대학교 자동차공학전문대학원)

Abstract ▼ AI-Helper 아이콘AI-Helper

The purpose of this raper is to assess the benefits of frequency domain fatigue analysis and compare it with more conventional time domain techniques. The multi-body dynamic analysis, FE analysis and fatigue life prediction technique are applied for the frequency domain fatigue analysis. To obtain t...

주제어

#벨지언 로드   #포트홀   #준정적 내구해석   #공진내구해석   #현가장치  

AI 본문요약
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제안 방법

  • The frequency response data for the given structural system are obtained through the finite element analysis. And also, the fatigue life estimation of chassis component is performed with the dynamic stress, which is obtained by combining the dynamic load data in the frequency domain with the frequency response data obtained from the normal mode analysis. In this study, commercial multi-body dynamic analysis software, ADAMS is used to produce the dynamic load data, and also the finite element analysis softwares, MSC/NASTRAN and MSC/ FATIGUE, are used to perform vibration analysis and fatigue life analysis, respectively.
  • And also, the fatigue life estimation of chassis component is performed with the dynamic stress, which is obtained by combining the dynamic load data in the frequency domain with the frequency response data obtained from the normal mode analysis. In this study, commercial multi-body dynamic analysis software, ADAMS is used to produce the dynamic load data, and also the finite element analysis softwares, MSC/NASTRAN and MSC/ FATIGUE, are used to perform vibration analysis and fatigue life analysis, respectively. Using the developed technique, the durability analyses for the rear suspension system of small-sized passenger car are carried out.
  • The durability estimations for the rear suspension system of the small-sized passenger car are performed by using the proposed resonance durability analysis technique and then compared with the quasi-static durability analysis results. For the pothole simulation, the percent changes of the fatigue life between the two durability analysis techniques don't exceed 10%.

대상 데이터

  • The finite element model of the rear suspension system used in this study consisted of 7, 000 nodes and 6, 000 elements. Free vibration analysis without boundary conditions is performed by using the commercial finite element analysis software, MSC/NASTRAN.
  • The multi-body dynamic model of the small-sized passenger car used in this study consisted of 24 rigid bodies, kinematic joints and force elements. Fig.

이론/모형

  • In this study, the durability analysis is performed by using commercial software, MSC/FATIGUE. And SAE 1035-169-CON material is used in this durability analysis.
  • model. The dynamic load data are extracted for 8 seconds by using the Belgian road simulation dynamic model.
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참고문헌 (13)

  1. Majcher, J. S., Michaleson, R. D., and Solomon, A. R., 1976, 'Analysis of Vehicle Suspensions with Static and Dynamic Computer Simulations,' SAE Paper, No. 76183 

  2. Landgraf, R. W., and Conle, F. A., 1989, 'Vehicle Durability Analysis,' Concurrent Engineering of Mechanical Systems, The University of Iowa, Vol. 1, pp. 239-259 

  3. Choi, G. S., Min, H. K., and Paik, S. H., 2000, 'Dynamic Stress of Vehicle using Virtual Proving Ground Approach,' SAE Paper No. 2000-01-0121, pp. 1-7 

  4. Steiner, W., Stinwender, G., and Unger, B., 2001, 'Fatigue Simulation of Power Train Components during the Design Process,' International Journal of Automotive Technology, Vol. 2, No.1, pp. 9-16 

    원문보기 상세보기

  5. Yim, H. J., Haug, E. J., and Dopker, B., 1990, 'Methods for Accurate Stress-Time History Computation,' Concurrent Engineering of Mechanical Systems, The University of Iowa, Vol. 2, pp. 117-134 

  6. Kuo, E. Y., and Kelkar, S. G., 1995, 'Vehicle Body Structure Durability Analysis,' SAE Paper, No. 951096, pp. 135-150 

  7. Dirlik, T., 1985, Application of Computers to Fatigue Analysis, Ph.D. Thesis, University of Warwick, UK 

  8. SAE Fatigue Design and Evaluation Technical Committee, 1988, Fatigue Design Handbook, Society of Automotive Engineers, pp. 120-122 

  9. Bannantine, J. A., Comer, J. J., and Handrock, J. L., 1987, Fundamentals of Metal Fatigue Analysis, Prentice Hall 

  10. Kang, S. J., and Yoo, Y. D., 1999, 'A study on the Vehicle Fatigue Analysis using Stress PSD,' Transactions of the Korean Society of Automotive Engineers, Vol. 7, No.2, pp. 424-430 

  11. Bishop, N. W. M., and Sherratt, F., 1990, 'A Theoretical Solution for the Estimation of Rainflow Ranges from Power Spectral Density Data,' Fatigue Fract. Engng Mater. Struct., Vol. 13, No.4, pp. 311- 326 

    상세보기 crossref

  12. Bishop, N. W. M., Lack, L. W., Li, T., and Kerr, S., 1995, 'Analytical Fatigue Life Assessment of Vibration Induced Fatigue Damage,' Proceedings of MSC World Users Conference, Universal City, Los Angeles 

  13. MSC/Fatigue Quick Start Guide, 1999, The MSC. Software Co., pp. 247-302 

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