Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Analysis of Uncertainties in Estimation of Critical Speeds from Tire Yaw Marks

타이어 요마크로부터 임계속도 추정의 불확실성 해석

  • Han, Inhwan (Department of Mechanical and Design Engineering, Hongik University)
  • 한인환 (홍익대학교 기계정보공학과)
  • Received : 2014.06.12
  • Accepted : 2015.02.03
  • Published : 2015.07.01
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Abstract

There will inevitably be errors and uncertainties in tire yaw mark related critical speed formula, which is derived merely from the relationship between the centrifugal force and the friction force acting on the point-mass vehicle. Constructing and measuring yaw marks through appropriate simulation works have made it possible to perform uncertainty analysis in calculation of critical speeds under variation of variety of conditions and parameters while existing yaw mark experimental tests have not performed properly. This paper does not present only the critical speed analysis results for parametric sensitivity and uncertainty of chord and middle ordinate, coefficient of friction and road grade, but also modeling uncertainty such as variation of braking level during turning and vehicle size. The yaw mark analysis methods and results may be now applied in practice of traffic accident investigation.

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References

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