This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Substructure Modal Composition and Sensitivity Analysis based on Closed-Loop Coupling Model without Coupling Spring
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 05, 2016 by SAE International in United States
Annotation ability available
In this paper, analysis methods for brake squeal including substructure modal composition analysis and substructure modal parameters sensitivity analysis are presented. These methods are based on a new closed-loop coupling disc brake model, where the coupled nodal pairs in each coupling interface are connected tightly. This assumption is different from other existing models in literatures, where the interface nodes are coupled through assumed springs. Based on this new model, two analysis methods are derived: Substructure modal composition analysis indicates the contribution of modes of each substructure to the noise mode; Substructure modal parameters sensitivity analysis indicates the sensitivity of the real part of system’s eigenvalue to component’s modal frequency and shape. Finally, the presented analysis methods are applied to analyse a high frequency squeal problem of a squealing disc brake. It is found that the complex eigenvalue analysis results are correlated well with those from squeal test. Results of substructure modal composition analysis and sensitivity analysis are compared to those from literatures. The influence of substructure modal parameters on system instability is investigated and the key structural factors that affect the squeal occurrence most are found. The results correspond qualitatively with those from the traditional analysis methods.
CitationLv, Y., Du, Y., and Wang, Y., "Substructure Modal Composition and Sensitivity Analysis based on Closed-Loop Coupling Model without Coupling Spring," SAE Technical Paper 2016-01-1309, 2016, https://doi.org/10.4271/2016-01-1309.
- Abendroth, H. and Wernitz, B., "The Integrated Test Concept: Dyno - Vehicle, Performance - Noise," SAE Technical Paper 2000-01-2774, 2000, doi:10.4271/2000-01-2774.
- Guan, D., Su, X., "An Overview on Brake Vibrations and Noise," Engineering Mechanics, 21(4): 150-155, 2004.
- Kinkaid, N., O'Reilly, O., Papadopoulos, P., "Automotive disc brake squeal," Journal of Sound and Vibration, 267(1), 105-166, 2003, doi:10.1016/S0022-460X(02)01573-0.
- Chen, F., Tong, H., Chen, S., and Quaglia, R., "On Automotive Disc Brake Squeal Part IVReduction and Prevention," SAE Technical Paper 2003-01-3345, 2003, doi:10.4271/2003-01-3345.
- Ouyang, H., Nack, W., Yuan, Y., and Chen, F., "On Automotive Disc Brake Squeal Part II: Simulation and Analysis," SAE Technical Paper 2003-01-0684, 2003, doi:10.4271/2003-01-0684.
- Willams, J., Zhang, Z., Oberst, S., et al., "Model Updating of Brake Components’ Influence on Instability Prediction," The 22nd International congress on sound and vibration.
- Kung, S., Stelzer, G., Belsky, V., and Bajer, A., "Brake Squeal Analysis Incorporating Contact Conditions and Other Nonlinear Effects," SAE Technical Paper 2003-01-3343, 2003, doi:10.4271/2003-01-3343.
- Liles, G., "Analysis of Disc Brake Squeal Using Finite Element Methods," SAE Technical Paper 891150, 1989, doi:10.4271/891150.
- Abu-Bakar. A., Ouyang. H., "Recent studies of car disc brake squeal, " New Research on Acoustics, 2008: 159-198.
- Chen, X., Guan D.,Wang X., "A study of drum brake judder". Shanghai: SAE, IPC-5 Paper 891329, 1989.
- Dihua, G. and Dongying, J., "A Study on Disc Brake Squeal Using Finite Element Methods," SAE Technical Paper 980597, 1998, doi:10.4271/980597.
- Guan, D., Du, Y., Li Q., "Analysis of A Disc Brake High Frequency Squeal and Reduction," Engineering Mechanics, 2014, 31(12): 217-222.
- Li. Q., Guan. D., Du. Y., Wang. X., "Effect of pad shapes on disc brake squeal at high frequency," Automotive Safety and Energy, 2014, 5(4): 360-366.
- Xinchao, Z. and Dihua, G., "The Experimental and Simulational Analysis on Drum Brake Squeal by Structurally Closed-Loop Coupling Model," SAE Technical Paper 931879, 1993, doi:10.4271/931879.
- Guan, D., Su X. and Zhang, F., "Sensitivity analysis of brake squeal tendency to substructures' modal parameters," Journal of sound and vibration, 291(1): 72-80, 2006, doi:10.1016/j.jsv.2005.05.023.
- Guan, D., and Huang, J., "The method of feed-in energy on disc brake squeal," Journal of Sound and Vibration, 261 (2): 297-307, 2003, doi:10.1016/S0022-460X(02)01074-X.
- Su, X., "Study on Brake Vibration and Noise Reduction Methods Using Substructure Sensitivity Analysis and Structural Modification Techniques," PH.D. thesis Automotive Engineering Department, Tsinghua University, Beijing, 2003.
- Du, Y., Gao, P., Wang, Y., and Lv, Y., "On the Coupling Stiffness in Closed-Loop Coupling Disc Brake Model through Optimization," SAE Int. J. Passeng. Cars - Mech. Syst. 8(1):31-36, 2015, doi:10.4271/2015-01-0668.
- Chen, F., Tan, C., and Quaglia, R., “Disc Brake Squeal: Mechanism, Analysis, Evaluation, and Reduction/Prevention,” (Warrendale, Society of Automotive Engineers, Inc., 2005), doi:10.4271/R-353.