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A Study on Sensitivity of Generalized Frictional Stiffness Matrix to Reduce Squeal Noise
Technical Paper
2007-01-2171
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In spite of many squeal noise studies, it is still hard to predict squeal noise these days. Squeal analysis is a useful technique in reducing or removing squeal noise. As a result, several papers that contain reasonable finite element model with correlation, squeal mode analysis, and design proposals that can reduce the squeal noise have been released.
In this paper, Generalized Frictional Stiffness Matrix was extracted using Generalized Coordinate in ABAQUS. GFSM(Generalized Frictional Stiffness Matrix) is an unsymmetrical matrix which creates a real-eigen-value (unstable mode) in complex eigenvalue problem. Then, sensitivity of each term in GFSM is calculated. The least modification was proposed from the sensitivities to reduce the squeal noise. To verify this proposal, a reasonable finite element model was generated by correlating component and assembly modal tests. In processing correlation with component modal test, MAC(Modal Assurance Criteria) was used as a reference value for mode shape correlation.
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Citation
Han, J., Kim, J., Park, K., and Son, M., "A Study on Sensitivity of Generalized Frictional Stiffness Matrix to Reduce Squeal Noise," SAE Technical Paper 2007-01-2171, 2007, https://doi.org/10.4271/2007-01-2171.Also In
References
- Jaber Naim A. Wang Alex Yue Yan Allgaier Ralph “Brake Noise Study(PartII) - High Frequency Squeal” SAE 2006-01-0475
- Kung Shih-Wei Dunlap K. Brent Ballinger Robert S. “Complex Eigenvalue Analysis for Reducing Low Frequency Brake Squeal” SAE Paper 2000-01-0444
- Joo Sang Don Han Ji Hoon Park Kyung Whan “Reducing brake squeal through FEM approach and parts design modifications” SAE Paper 2006-01-3206