Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지

A Study on Computational Method for Fatigue Life Prediction of Vehicle Structures

차체 구조물의 피로수명 예측을 위한 컴퓨터 시뮬레이션 방법에 관한 연구

  • 이상범 (국민대학교 자동차 공학 전문대학원) ;
  • 박태원 (아주대학교 기계 및 산업공학부) ;
  • 임홍재 (국민대학교 기계자동차공학부)
  • Published : 2000.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper a computer aided analysis method is proposed for durability assessment in the early design stages using dynamic analysis, stress analysis and fatigue life prediction method. From dynamic analysis of a vehicle suspension system, dynamic load time histories of a suspension component are calculated. From the dynamic load time histories and the stress of the suspension component, a dynamic stress time history at the critical location is produced using the superposition principle. Using linear damage law and cycle counting method, fatigue life cycle is calculated. The predicted fatigue life cycle is verified by experimental durability tests.

Keywords

References

  1. Proceedings of the First Annual Symposium on Mechanical System Design in a Concurrent Engineering Environment Vehicle Durability Analysis landgraf,R.W.;Conle,F.A.
  2. Proceeding of the Second Annual Symposium on Mechanical System Design in a Concurrent Engineering Environment Integrated Computational Durability Analysis Baek,W.K.;Stephens,R.I.
  3. Ph. D. thesis Computational Methods for Life Prediction of Mechanical Components of Dynamic Systems Liu,T.S.
  4. KSME Journal v.10 no.2 An Integrated CAE System for Dynamic Stress and Fatigue Life Prediction of Mechanical Systems Yim,H.J.;Lee,S.B.
  5. Fundamentals of Metal Fatigue Analysis Bannantine,J.A.;Comer,J.J.;handrock,J.L.
  6. 대한기계학회논문집 v.19 no.11 차체의 유연성을 고려한 차량의 동하중 이력계산을 위한 컴퓨터 시뮬레이션 임홍재;이상범;최재욱;장성국
  7. MSC/NASTRAN User's Manual
  8. MSC/FATIGUE User's Manual