Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study on Durability of Under Bar at Car through Structural and Fatigue Analysis

자동차 언더바의 구조 및 피로해석을 통한 내구성 연구

  • Han, Mu Shick (Keimyung University Mechanical and Automotive Engineering Dept.) ;
  • JO, Jae-Woong (Kongju National University Mechanical and Automotive Engineering Div.)
  • Received : 2014.10.09
  • Accepted : 2015.01.28
  • Published : 2015.04.30
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Abstract

This study investigated the durability of the under bar of a car through structural and fatigue analysis. Model 1 had the lowest value among three kinds of models. In the case of the maximum equivalent stress and displacement at structural analysis, model 1 showed the highest durability. Also, models 3 and 2 showed structural durability in order of this value. In the case of fatigue analysis, the maximum fatigue lives of the three models were equal to $2{\times}10^7$cycles. However, model 1 showed the highest value among the three models, as the minimum fatigue life of model 1 becames 92.56 cycles. Also models 3 and 2 showed fatigue durability in order of this value. The maximum possibility of fatigue damage for models1,2,and 3 became 30%. If the results of this study are applied to change the design shape of the under bar of cars, the ride comfort for automobile passengers and car durability can be improved.

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References

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