Numerical and Experimental Analysis for Disc Brake Squeal Induced by Caliper Mode

캘리퍼 모드에 의한 디스크 브레이크 스퀼 시험 및 해석

  • Choi, Hoil (Div. of Mechanical and Automobile Engineering, Kongju Nat'l Univ.) ;
  • Kang, Jaeyoung (Div. of Mechanical and Automobile Engineering, Kongju Nat'l Univ.) ;
  • Gil, Hojong (Div. of Mechanical and Automobile Engineering, Kongju Nat'l Univ.)
  • 최호일 (공주대학교 기계자동차공학부) ;
  • 강재영 (공주대학교 기계자동차공학부) ;
  • 길호종 (공주대학교 기계자동차공학부)
  • Received : 2014.05.28
  • Accepted : 2014.08.25
  • Published : 2014.12.01


This study numerically simulates brake squeal and validates it experimentally by using a lab-scaled brake dynamometer. The system frequencies of the disc brake are traced with respect to the brake pressure by using a modal test and FEM. Then, the squeal frequencies measured from the brake dynamometer are found to correspond to the brake system mode with the dominant displacement of the caliper and pad. Furthermore, a complex eigenvalue analysis conducted using the finite element model confirms that the caliper mode generating the rotational displacement of the pad becomes unstable owing to the negative friction-velocity slope.


Frequency Response Function;Complex Eigenvalue Analysis;Brake Squeal;Friction Curve


Supported by : 한국연구재단


  1. Mario, T., Samir, N.Y. and Roberto, J., 2008, "Analysis of Brake Squeal Noise Using the Finite Element Method: A Parametric Study," Applied Acoustics, Vol. 69, No. 2, pp. 147-162.
  2. Nam, J. and Kang, J., 2012, "A Basic Experimental Study on the Squeak Noise Using the Pin-on-Disc," Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 22, No. 8, pp. 736-741.
  3. Nam, J., Cho, B. and Kang, J., 2013, "Squeal Test Using Lab-Scale Brake Dynamometer for Pad Angle and Negative-Slope," Journal of the Korea Academia-Industrial Cooperation Society, Vol. 14, No. 7, pp. 3158-3163.
  4. Nam, J. and Kang, J., 2013, "Brake Squeal Analysis with Respect to Caliper Contact Stiffness," Transactions of the KSNVE, Vol. 23, No. 8, pp. 717-724.
  5. Lee, J. and Kim, S., 2013, "A Study on the Squeal Noise Instability Analysis on Calipe Brake," Transactions of the KSNVE, Vol. 23, No. 11, pp.957-965.
  6. Park, J., Kim, H., Yoon, M., Boo, K. and Kim, H., 2013, "Low Frequency Squeal Noise Reduction Using Mode Participation Factor in Complex Eigenvalue Analysis," Trans. Korean Soc. Mech. Eng. A, Vol. 37, No. 3, pp. 325-331.
  7. Liu, P., Zheng, H., Cai, C., Wang, Y.Y., Lu, C., Ang, K.H. and Liu, G.R., 2007, "Analysis of Disc Brake Squeal Using the Complex Eigenvalue Method," Applied Acoustics, Vol. 68, No. 6, pp. 603-615.
  8. Kang, J., 2009, "Squeal Analysis of Gyroscopic Disc Brake System Based on Finite Element Method," International Journal of Mechanical Sciences, Vol. 51, No. 4, pp. 284-294.
  9. Kang, J., 2012, "Finite Element Modelling for the Investigation of in-Plane Modes and Damping Shims in Disc Brake Squeal," Journal of Sound and Vibration, Vol. 331, No. 9, pp. 2190-2202.
  10. Lou, G., Wu, T.W. and Bai, Z., 2004, "Disk Brake Squeal Prediction Using the ABLE Algorithm," Journal of Sound and Vibration, Vol. 272, No. 3-5, pp. 731-748.
  11. Dai, Yi. And Lim, T.C., 2008, "Suppression of Brake Squeal Noise Applying Finite Element Brake and Pad Model Enhanced by Spectral-Based Assurance Criteria," Applied Acoustics, Vol. 69, No.3, pp. 196-214.
  12. Huang, J., Krousgrill, C., and Bajaj, A., 2006, "Modeling of Automotive Drum Brakes for Squeal and Parameter Sensitivity Analysis," Journal of Sound and Vibration, Vol. 289, pp. 245-263.