Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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A Study on Fatigue Durability through the Structural Analysis of Strut Bar

스트럿 바의 구조 해석을 통한 피로 내구성에 관한 연구

  • Han, Moonsik (Department of Mechanical & Automotive Engineering, Keimyung University) ;
  • Cho, Jaeung (Department of Mechanical & Automotive Engineering, Kongju National University)
  • 한문식 (계명대학교 기계자동차공학과) ;
  • 조재웅 (공주대학교 기계자동차공학부)
  • Received : 2015.11.06
  • Accepted : 2016.06.22
  • Published : 2016.09.01
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Abstract

This study investigates the durability of strut bar at car through structural and fatigue analyses. In this study, there are model 1 and model 2 as the analysis subjects. Model 1 is the existed one and model 2 is the improved one added with the reinforced part. Model 1 has the maximum equivalent stress of 165.11 MPa shown intensively at the welding part between the bracket and the bar. This stress is distributed over at the part of model 2 reinforced with this part. In case of fatigue analysis, there are three kinds of fatigue load as SAE bracket history, SAE transmission and sample history. The maximum fatigue life at SAE bracket history among three kinds of fatigue loads has the least value of $3.3693{\times}10^5$ cycles. The maximum fatigue life of model 2 becomes longer than that of model 1. As model 2 has the fatigue damage less than model 1, model 2 has the safety than model 1. As the fatigue durability about the configuration of strut bar is analyzed, it is thought to apply this study result into the real part effectively.

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References

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