Friction influence on brake squeal in disc and drum brakes using complex eigenvalue analysis
Brake noise, is a complex issue in automotive and industrial systems caused by friction-induced vibrations between the brake pad and disc. This noise impacts vehicle performance, accelerates component wear, and diminishes consumer satisfaction. Squeal can be categorized into low frequency (1–5 kHz)...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | Portuguese |
| Published: |
Sociedade Brasileira de Física
2025-04-01
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| Series: | Revista Brasileira de Ensino de Física |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172025000100428&lng=en&tlng=en |
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| Summary: | Brake noise, is a complex issue in automotive and industrial systems caused by friction-induced vibrations between the brake pad and disc. This noise impacts vehicle performance, accelerates component wear, and diminishes consumer satisfaction. Squeal can be categorized into low frequency (1–5 kHz) and high frequency (6–20 kHz) types, explained by mechanisms such as stick-slip, sprag-slip, and mode coupling, which involve interactions among friction, component geometry, and vibration modes. While experimental studies often face budget constraints, advancements in computational techniques like the Finite Element Method (FEM) provide new insights into brake noise dynamics. FEM, combined with complex eigenvalue analysis, offers a cost-effective way to study brake squeal. This study aims to develop a FEM model to analyze brake squeal, focusing on variations in friction coefficients in solid and ventilated disc brakes for cars, motorcycles, and trains, as well as drum brake systems. The findings indicate that solid motorcycle disc brakes exhibit minimal low squeal, with high squeal occurring only at maximum friction levels, while vented motorcycle disc brakes show high squeal at all levels, maintaining lower Total Unstable Frequencies (TUF) and Noise Index (NI). The model offers valuable insights that can be applied in both education and research. |
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| ISSN: | 1806-9126 |