한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제23권4호
  • /
  • Pages.361-370
  • /
  • 2015
  • /
  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
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타이어 요마크로부터 임계속도 추정의 불확실성 해석

Analysis of Uncertainties in Estimation of Critical Speeds from Tire Yaw Marks

  • 한인환 (홍익대학교 기계정보공학과)
  • Han, Inhwan (Department of Mechanical and Design Engineering, Hongik University)
  • 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

  1. R. M. Brach, "An Analytical Assessment of the Critical Speed Formula," SAE 970957, 1997.
  2. C. Dickerson, M. S. Arndt and G. Mowry, "Evaluation of Vehicle Velocity Predictions Using the Critical Speed Formula," SAE 950137, 1995.
  3. W. C. Fischer, "Challenging the Critical Speed Formula in Light of the Daubert Decision," SAE 2005-01-3141, 2005.
  4. S. Richardson, T. Orton, N. Josevski, W. P. Pok, A. Sandvik and C. Jones, "A Critique of Critical Speed Yaw Mark Research," SAE 2012-01-0600, 2012.
  5. N. Sledge and K. Marshek, "Formulas for Estimating Vehicle Critical Speed from Yaw Marks - A Review," SAE 971147, 1997.
  6. J. Daily, "Analysis of Critical Speed Yaw Scuffs Using Spiral Curves," SAE 2012-01-0606, 2012.
  7. O. Masory, S. Delmas, B. Wright and W. Bartlett, "Validation of the Circular Trajectory Assumption in Critical Speed," SAE 2005-01-1189, 2005.
  8. G. A. Davis, "Sample-based Estimation of Vehicle Speeds from Yaw Marks: Bayesian Implementation Using Markov Chain Monte Carlo Simulation," SAE 2014-01-0467, 2014.
  9. R. M. Brach and R. M. Brach, "Tire Models for Vehicle Dynamic Simulation and Accident Reconstruction," SAE 2009-01-0102, 2009.
  10. R. Brach and M. Brach, "The Tire-force Ellipse (Friction Ellipse) and Tire Characteristics," SAE 2011-01-0094, 2011.
  11. J. W. Cannon, "A Study of Errors in Yaw-based Speed Estimates due to Effective Braking," SAE 2003-01-0888, 2003.
  12. G. Beauchamp, D. Hessel, N. A. Rose and S. J. Fen, "Determining Vehicle Steering and Braking from Yaw Mark Striations," SAE Int. J. Passeng. Cars - Mech. Syst., Vol.2, No.1, pp.291-307, 2009. https://doi.org/10.4271/2009-01-0092
  13. N. Carter, G. Beauchamp and N. A. Rose, "Comparison of Calculated Speeds for a Yawing and Braking Vehicle to Full-scale Vehicle Tests," SAE 2012-01-0620, 2012.
  14. W. E. Cliff, J. M. Lawrence, B. E. Heinrichs and T. R. Fricker, "Yaw Testing of an Instrumented Vehicle with and without Braking," SAE 2004-01-1187, 2004.
  15. R. F. Lambourn, "Braking and Cornering Effects with and without Anti-lock Brakes," SAE 940723, 1994.
  16. W. Bartlett, W. Wright, O. Masory, R. Brach, A. Baxter, B. Schmidt, F. Navin and T. Stanard, "Evaluating the Uncertainty in Various Measurement Tasks Common to Accident Reconstruction," SAE 2002-01-0546, 2002.
  17. I. Han and S. Park, "Uncertainty of Measurements in the Analysis of Vehicle Accidents," Journal of Korea Society of Transportation, Vol.28, No.3, pp.119-130, 2010.
  18. W. Wach, "Uncertainty in Calculations Using Lambourn's Critical Speed Procedure," SAE 2013-01-0779, 2013.
  19. G. Amirault and S. MacInnis, "Variability of Yaw Calculations from Field Testing," SAE 2009-01-0103, 2009.