Study of Brake Pad Shim Modification to Improve Stability Against High Frequency Squeal Noise by Finite Element Analysis

Authors

  • Anutcharee Khuntiptong Mahasarakham University
  • Kiatfa Tangchaichit Khon Kaen University
  • Supachai Polnumtiang Khon Kaen University
  • Nuttapong Ladbut Mahasarakham University
  • Kittinan Wansasueb Mahasarakham University

DOI:

https://doi.org/10.4186/ej.2022.26.9.25

Keywords:

modal coupling, high frequency brake squeal noise, finite element analysis, complex eigenvalue analysis, modal testing

Abstract

This research studying on brake pad shim design with 4 configurations to improve the brake squeal noise phenomenon for high frequency noise in the range of 4-16 kHz. Various shims were designed with different configurations to increase structural damping and avoid instabilities in a brake system, which arise from friction drawing the vibration modes to coalesce between brake disc and brake pads. Then, the suspect brake module was tested in the laboratory using a dynamometer machine to confirm brake frequency noise parameters and conditions. The numerical models including brake disc, brake pad and brake pad shim were created using finite elements software and the unstable modes analysed for negative damping and positive real part values with the Complex Eigenvalue Analysis (CEA) technique. The simulation result showed that the instability of the brake system comes from mode coupling of the brake disc and brake pads in the out-of-plane modes (11ND) and (2 ND), respectively. The brake pads shim design1, design2 and design3 are component which goes in between the calipers and brake pads, were able to avoid high frequency brake squeal but make the noise move toward the direction of the lower frequency. The brake pad shim design4 is the good structure modification to avoid high frequency brake squeal and low frequency.

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Author Biographies

Anutcharee Khuntiptong
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Department of Mechanical Engineering, Faculty of Engineering, Mahasarakham University, Thailand

Kiatfa Tangchaichit
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Department of Mechanical Engineering, Faculty of Engineering, Khon Kaen University, Thailand

Supachai Polnumtiang
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Department of Mechanical Engineering, Faculty of Engineering, Khon Kaen University, Thailand

Nuttapong Ladbut
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Department of Civil Engineering, Faculty of Engineering, Mahasarakham University, Thailand

Kittinan Wansasueb
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Department of Mechanical Engineering, Faculty of Engineering, Mahasarakham University, Thailand

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Published In
Vol 26 No 9, Sep 30, 2022
How to Cite
[1]
A. Khuntiptong, K. Tangchaichit, S. Polnumtiang, N. Ladbut, and K. Wansasueb, “Study of Brake Pad Shim Modification to Improve Stability Against High Frequency Squeal Noise by Finite Element Analysis”, Eng. J., vol. 26, no. 9, pp. 25-34, Sep. 2022.
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