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Analysis of Ventilated Disc Brake Squeal Using a 10 DOF Model
Technical Paper
2012-01-1827
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Squeal of disc brakes is considered as a main source of discomfort for passengers. Typically 1 to 4 kHz noise is considered low frequency squeal and ≻8 kHz noise is considered high frequency squeal. It is a significant problem in passenger vehicles for the comfort of the passengers and a significant financial problem for industry too. Many manufacturers of brake pad materials spend up to fifty percent of their engineering budgets on noise, vibration and harshness (NVH) issues. Squeal noise is strongly correlated to the squeal index and degree of instability of the brake system assembly. Decreasing this squeal noise to some extent during braking is very important matter for the comfort of passengers. So, a mathematical prediction model of 10-degree-of-freedom has been developed to study the effect of different brake components parameters on the degree of instability and squeal index of the brake system. The model has considered such factors as the distance between clamping bolts of the caliper which was not fully covered previously besides some other factors as width and thickness of the friction material. Complex eigenvalue analysis by MATLAB has been used to predict the unstable frequencies of the ventilated disc brake system assembly. It is evident from the analysis that squeal noise of the brake decreases with increasing semi-distance between the clamping bolts of the caliper and with the increase in friction material thickness. However, the squeal noise decreases with increasing the width of the friction material and Young's modulus of both rotor and friction material. The results also show that the width of the friction material has a major effect on the occurrence of the squeal noise of the brake assembly and as it increases, the squeal index decreases.
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Ahmed, I., "Analysis of Ventilated Disc Brake Squeal Using a 10 DOF Model," SAE Technical Paper 2012-01-1827, 2012, https://doi.org/10.4271/2012-01-1827.Data Sets - Support Documents
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References
- Lin, Saw Chun Abu Bakr, Abd Rahim Mysyris, Wan Mohd Ghani, Badri Abd Jamaluddin, Mohd Rahimi “Suppressing Disc Brake Squeal Through Structural Modifications” Journal Mekanikal December 2009 29 67 83 UTM Malysia 2009
- Kinkaid, N. M. O'Reilly, O.M. Papadopoulos, P. “Review of Automotive Disc Brake Squeal” Journal of Sound and Vibration 267 105 166 2003
- Gouya, M. Nishiwaki, M. “Study on Disc Brake Groan,” SAE Technical Paper 900007 1990 10.4271/900007
- Nishlwakl, M. Harada, H. Okamura, H. Ikeuchi, T. “Study on Disc Brake Squeal,” SAE Technical Paper 890864 1989 10.4271/890864
- Liles, G. “Analysis of Disc Brake Squeal Using Finite Element Methods,” SAE Technical Paper 891150 1989 10.4271/891150
- Lee, Y.S. Brooks, P.C. Barton, D.C. Crolla, D.A. “A Study of Disc Brake Squeal Propensity Using a Parametric Finite Element model” European Conference on Vehicle Noise and Vibration, IMechE, C521/009/98 1998
- Hu, Y. Mahajan, S. Zhang, K. “Brake Squeal DOE Using Nonlinear Transient Analysis,” SAE Technical Paper 1999-01-1737 1999 10.4271/1999-01-1737
- Brooks, P. C. Crolla, D. A. Lang, A.M. Schafer, D. R. “Eigenvalue sensitivity analysis applied to disc brake squeal” Proc. IMechE C444/004 135 143 1993
- Shin, K. Brennan, M.J. Oh, J.-E. Harris, C.J. “Analysis of disk brake noise using a two-degree-of-freedom model” Journal of Sound and Vibration 254 5 837 848 2002
- Liu, P. Zheng, H. Cai, C. Wang, Y.Y. Lu, C. Ang, K.H. Liu, G.R. 2007 Analysis of disc brake squeal using the complex eigenvalue method Applied Acoustics 68 603 615
- Dai, Y. Lim, T.C. “Suppression of brake squeal noise applying finite element brake and pad model enhanced by spectral-based assurance criteria” Applied Acoustics 69 196 214 2008
- Saad, Ahmed A.A. Ahmed, Ibrahim Watany, Mohamed “Automotive Disc Brake Occurrence: An Experimental Investigation” Engineering Research Journal 119 October 2008 Helwan University Cairo, Egypt 2008
- Ahmed, I. Metwally, S. Mohamed, E. Abouel-Seoud, S. “Influence of Surface Modifications on Vehicle Disc Brake Squeal,” SAE Technical Paper 2009-01-1977 2009 10.4271/2009-01-1977
- Ichiba, Y. Nagasawa, Y. “Experimental Study on Disc Brake Squeal,” SAE Technical Paper 930802 1993 10.4271/930802
- Bracken, W. Sakioka, J. “A Method for the Quantification of Front Disc Brake Squeal,” SAE Technical Paper 820037 1982 10.4271/820037
- Earles, S.W. Chambers, P.W. “Disc Brake Squeal- some factors which influence its occurrence” IMechE C454/88 39 46 1988
- Millner, N. “An Analysis of Disc Brake Squeal,” SAE Technical Paper 780332 1978 10.4271/780332
- Yuan, Yongbin “A Study of the Effects of Negative Friction-Speed Slope on Brake Squeal” ASME 84-1 Design Engineering Technical Conferences 3 1995
- Nishizawa, Y. Saka, H. Nakajima, S. Arakawa, T. “Electronic Control Canceling System for a Disc Brake Noise,” SAE Technical Paper 971037 1997 10.4271/971037
- Carne, Thomas G. Dohrmann, Clark R. “Support Conditions, Their Effect on Measured Modal Parameters” Proceedings of the 16th International Modal Analysis Conference- Santa Barbara-California IMAC 1998 I
- North, M.R. “Disc Brake Squeal- A Theoretical Model” MIRA Report, No. 1972/5
- Triches, Mario Junior Gerges, Samir N.Y. Jordan, Roberto “Analysis of brake squeal noise using the finite element method: A parametric study” Journal of Applied Acoustics 69 2008 147 162 2008
- Kung, S. Dunlap, K. Ballinger, R. “Complex Eigenvalue Analysis for Reducing Low Frequency Brake Squeal,” SAE Technical Paper 2000-01-0444 2000 10.4271/2000-01-0444
- Crolla, D. A. “Automotive Engineering powertrain, chassis system and vehicle body” 789-85617-577-7 Elsevier Inc. 2009