Measurement and Analysis of Rotor In-plane Mode Induced Disc Brake Squeal and Beyond

Chen, F.; Mckillip, D.; Luo, Jian; Wu, Sean F.

doi:10.4271/2004-01-2798

Cited by 13 publications

(4 citation statements)

References 9 publications

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“…In Figure 4, a cylindrical coordinate system normal z-axis in the disc plane is used, and the amplitudes in a radial direction an cumferential direction are shown in Figure 4a-c, respectively. The tangential in-plane compression modes have been found as the most signi cause of brake squeal [11,13,14], and Chen et al [11] stated that the coupling of a tang in-plane compression mode and an adjacent diametrical bending mode constitut dominant cause of squeal noise. The diametrical bending modes behave similarly nodal diameter (ND) modes from the classical circular plate vibration theories, e.g., L [26].…”

Section: Brake Rotor Modes Descriptionmentioning

confidence: 99%

“…tionally, the tangential in-plane compression modes are referred to as T modes for T modes typically have much higher frequencies than ND modes. The tangential in-plane compression modes have been found as the most significant cause of brake squeal [11,13,14], and Chen et al [11] stated that the coupling of a tangential in-plane compression mode and an adjacent diametrical bending mode constitutes the dominant cause of squeal noise. The diametrical bending modes behave similarly to the nodal diameter (ND) modes from the classical circular plate vibration theories, e.g., Leissa [26].…”

Section: Brake Rotor Modes Descriptionmentioning

confidence: 99%

“…Brake squeal, which is a high-frequency noise produced during braking, has been one of the most difficult issues associated with automotive brake systems [10,11]. Brake rotors are often bolted to wheel hubs; however, finite element analyses on brake rotors with free-free boundary conditions can still provide valuable insights into the squeal phenomenon [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Structural Optimization of Vented Brake Rotors with a Fully Parameterized Model

et al. 2022

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Vented brake rotors used in an automobile behave similarly to centrifugal fans, drawing cool air from the inboard side, passing it through the disc vents, and exhausting it from the periphery. A vented brake rotor with a better heat dispersing ability is often superior to a solid rotor, in both thermal performance and brake efficiency. In this research, a fully parameterized model for a ventilated brake rotor is created using the ANSYS Parametric Design Language, to uniquely define the rotor’s geometry. With this parameterized model, two structural optimization cases are studied in this paper. The first one investigated is a modal frequency separation problem: The frequency differences in a tangential mode sandwiched between two nodal diameter modes of the brake rotor model are maximized. An automatic identification scheme for extracting correct mode orders is implemented in the program to track the correct modes during optimization. The second case is a thermal deformation problem: The distortion on the frictional surfaces of the rotor loaded with heat flux generated during the braking process is minimized. The optimization results show that a brake rotor design with a thinner outboard disc and a thicker inboard disc provides a great choice for rotor coning reduction.

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Section: Brake Rotor Modes Descriptionmentioning

confidence: 99%

Section: Brake Rotor Modes Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural Optimization of Vented Brake Rotors with a Fully Parameterized Model

et al. 2022

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“…Out-of-plane modes were further classified as diametrical bending or circumferential bending modes. Chen et al [11] assumed the coupling of two adjacent modes (compression directional tangential in-plane mode and diametrical bending mode) as the dominant cause of the squeal noise.…”

Section: A Brake Noisementioning

confidence: 99%

Design Optimization of Disc Brake for Reducing Squeal Noise by Frequency Sensitivity Analysis

Cha¹,

Jung²,

Hong³

et al. 2018

IJET

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As widely noted by researched in last decades, an automotive brake system works by transforming kinetic energy of vehicle into thermal energy, and dissipating the energy through heat conduction. The typical concerns in this kind of system are the noise problems in high frequency which can be figured the vibration characteristics out though modal analysis of the system. As noted in recent research, the mentioned problem is mainly related with the specific modes of components where potentially can be superposed. The separation of these modes should be handled as a crucial design consideration at the initial stage of development. The rotor is a significant contributor of noise and vibration, hence the modal separation is to be considered in designing detail shapes of the component, since the shape of the object generally affects the mode frequencies. In this study, frequency sensitivity analysis through finite element method by design of experimental process has conducted to find the dominant shape factors among the multiple designable figures of the rotor body. Several shape factors are selected as design variables for the implementation of the modal separation process. The contribution of the shape factor to the mode frequency transition has calculated to achieve the optimal design of given component.

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Prediction and suppression of chaotic instability in brake squeal

Meehan

2021

Nonlinear Dyn

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Measurement and Analysis of Rotor In-plane Mode Induced Disc Brake Squeal and Beyond

Cited by 13 publications

References 9 publications

Structural Optimization of Vented Brake Rotors with a Fully Parameterized Model

Structural Optimization of Vented Brake Rotors with a Fully Parameterized Model

Design Optimization of Disc Brake for Reducing Squeal Noise by Frequency Sensitivity Analysis

Prediction and suppression of chaotic instability in brake squeal

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