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Incorporation of Friction Material Surface Inhomogeneity in Complex Eigenvalue Analysis to Improve the Accuracy of Brake Squeal Analysis
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 05, 2018 by SAE International in United States
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The sliding surface of the brake friction material is not uniform but composed of random contact plateaus with a broad pressure distribution, which are known to closely related to the triggering mechanism of friction induced noise and vibrations. The non-uniform contact plateaus are attributed to the various ingredients in the friction material with a broad range of physical properties and morphology and the size and stiffness of the plateau play crucial roles in determining the friction instability. The incorporation of friction surface inhomogeneity is, therefore, crucial and has to be counted to improve the accuracy of the numerical calculation to simulate brake noise. In this study, the heterogeneous nature of the friction material surface was employed in the simulation to improve the correlation between numerical simulations and experimental results. The distributions of contact stiffness and roughness on the friction material surface were used to represent the surface inhomogeneity in the complex eigenvalue analysis (CEA). The results from the noise simulation with uneven surface contacts minimized the difference between experiments and simulations and shed light on the possible improvement of the noise prediction from the CEA based simulations.
|Technical Paper||Numerical Simulation to Detect Low-Frequency Squeal Propensity|
|Technical Paper||Disc-Pad Interaction Related to Brake Squeal|
|Technical Paper||Improved Numerical Noise Predictions for Axial Fans|
CitationJoo, B., Jang, H., Kim, Y., Lee, J. et al., "Incorporation of Friction Material Surface Inhomogeneity in Complex Eigenvalue Analysis to Improve the Accuracy of Brake Squeal Analysis," SAE Technical Paper 2018-01-1873, 2018, https://doi.org/10.4271/2018-01-1873.
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- Kinkaid, N.M., O'Reilly, O.M., and Papadopoulos, P. , “Automotive Disc Brake Squeal,” Journal of Sound and Vibration 267(1):105-166, 2003.
- Meziane, A., Baillet, L., and Laulagnet, B. , “Experimental and Numerical Investigation of Friction-Induced Vibration of a Beam-on-Beam in Contact with Friction,” Applied Acoustics 71(9):843-853, 2010.
- Bergman, F., Eriksson, M., and Jacobson, S. , “Influence of Disc Topography on Generation of Brake Squeal,” Wear 225-229(I):621-628, 1999.
- Sherif, H.A. , “Investigation on Effect of Surface Topography of Pad/Disc Assembly on Squeal Generation,” Wear 257(7-8):687-695, 2004.
- Hetzler, H. , “On Moving Continua with Contacts and Sliding Friction: Modeling, General Properties and Examples,” International Journal of Solids and Structures 46(13):2556-2570, 2009.
- North, M. , Disc Brake Squeal: A Theoretical Model (Hillington Press, 1972).
- Ouyang, H. et al. , “Vibration and Squeal of a Disc Brake: Modelling and Experimental Results,” Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 217(10):867-875, 2003.
- Cao, Q. et al. , “Linear Eigenvalue Analysis of the Disc-Brake Squeal Problem,” International Journal for Numerical Methods in Engineering 61(9):1546-1563, 2004.
- Lee, S.M. et al. , “The Correlation between Contact Stiffness and Stick-Slip of Brake Friction Materials,” Wear 302(1-2):1414-1420, 2013.
- Cho, J., Jeong, J., Kim, H., Lee, H. et al. , “Development of Noise Propensity Index (NPI) for Robust Brake Friction,” SAE International Journal of Commercial Vehicles 10(2):589-595, 2017, doi:10.4271/2017-01-2529.
- Lee, S. and Jang, H. , “Effect of Plateau Distribution on Friction Instability of Brake Friction Materials,” Wear 400-401:1-9, 2018.
- Eriksson, M., Bergman, F., and Jacobson, S. , “Surface Characterisation of Brake Pads after Running under Silent and Squealing Conditions,” Wear 232(2):163-167, 1999.
- Eriksson, M. and Jacobson, S. , “Tribological Surfaces of Organic Brake Pads,” Tribology international 33(12):817-827, 2000.
- Meziane, A. et al. , “Instabilities Generated by Friction in a Pad-Disc System during the Braking Process,” Tribology International 40(7):1127-1136, 2007.
- Magnier, V., Brunel, J.F., and Dufrénoy, P. , “Impact of Contact Stiffness Heterogeneities on Friction-Induced Vibration,” International Journal of Solids and Structures 51(9):1662-1669, 2014.
- Dufrenoy, P., Magnier, V., Waddad, Y., Brunel, J. et al. , “A Multiscale Model of a Disc Brake Including Material and Surface Heterogeneities,” SAE International Journal of Passenger Cars-Mechanical Systems 9:1136-1143, 2016, doi:10.4271/2016-01-1911.
- Tison, T., Heussaff, A., Massa, F., and Turpin, I. , “Improvement in the Predictivity of Squeal Simulations: Uncertainty and Robustness,” Journal of Sound and Vibration 333(15):3394-3412, 2014.
- Hetzler, H. and Willner, K. , “On the Influence of Contact Tribology on Brake Squeal,” Tribology International 46(1):237-246, 2012.
- Garcia, N. and Stoll, E. , “Monte Carlo Calculation for Electromagnetic-Wave Scattering from Random Rough Surfaces,” Physical Review Letters 52(20):1798-1801, 1984.