Fatigue Analysis of Rear Suspension Part Applying Multi-body Dynamics

다물체 동역학을 이용한 후륜 현가 부품의 내구해석

  • Jeon, Seong Min (Dept. of Mechanical Engineering, Korea Univ. of Technology and Education) ;
  • Cho, Byung-Kwan (Dept. of Mechanical Engineering, Korea Univ. of Technology and Education)
  • 전성민 (한국기술교육대학교 기계공학부) ;
  • 조병관 (한국기술교육대학교 기계공학부)
  • Received : 2014.08.13
  • Accepted : 2015.07.16
  • Published : 2015.10.01


During the development of vehicles, durability tests are time consuming and costly. Recently, automobile companies have attempted to develop their own durability evaluation procedures by modifying and complementing . In this paper, we propose an integrated computer-aided engineering (CAE) method to evaluate the durability of a torsion beam axle (TBA). We compare this method with the standardized durability evaluation method used by an actual automobile company in order to determine the feasibility of this method. We compare the results with the test result data to enable us to estimate the reliability of the analysis results. In this study, we analyze the processes and results of the quasi-static fatigue analysis, and found improved methods and problems. Furthermore, we perform a thorough test using the requirements of the actual company. Based on the results, the structural analysis process in the quasi-static fatigue analysis method was superseded by the multi-body dynamics analysis process. Generally, this method is referred to as the resonance-fatigue analysis method.


Torsion Beam Axle;Fatigue Analysis;Multi-Body Dynamics;Flexible Body


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