Disc Brake Squeal Suppression Through Chamfered and Slotted Pad

Lin, Saw Chun; Guan, Choong Chee; Bakar, Abdul Rahim Abu; Jamaluddin, Mohd Rahimi; Harujan, Wan Mohd Musyris Wan; Ghani, Badri Abd

doi:10.4273/ijvss.3.1.04

Cited by 9 publications

(4 citation statements)

References 21 publications

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“…The parameters are listed in table 2. Based on the calculated voltage from equation ( 32), the transient charging simulation is carried out using equations ( 35)- (44). Due to the charging characteristics, there is no way for a capacitor to be fully charged to the peak voltage value of piezoelectric material.…”

Section: Parameter Studiesmentioning

confidence: 99%

“…Chen et al proposed a new mechanism for FIV and noise, and the partial detachment and reattachment of the contact surfaces were studied to help control friction and noise in daily life [43]. Lin et al presented a novel brake pad to reduce disc brake squeal with finite element analysis (FEA) and experiment testing [44]. Triches et al used modal analysis techniques to reduce braking squeal by optimizing brake damper parameters [45].…”

Section: Introductionmentioning

confidence: 99%

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Design and analysis of a d15 mode piezoelectric energy generator using friction-induced vibration

Xiao

Karnaoukh²,

Wu³

2023

Smart Mater. Struct.

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Research works have been conducted on transverse and longitudinal mode piezoelectric energy generation to collect energy from ambient vibrations. However, the inconsistency with the frequency of the energy source and low output power density remain problems for high energy output. In this work, we propose a shear mode piezoelectric energy generator, which utilizes the friction-induced vibration and high shear mode piezoelectric coefficient to improve the energy output. A piezoelectric coupled friction-induced vibration mathematical model is developed to accurately calculate the dynamic vibration response and voltage output. The dynamic voltage response is validated by experiment, and it proves the possibility of continuous friction-induced high-frequency vibration. The energy generation process is evaluated by transient charging simulation of a storage capacitor through an iteration process, which was experimentally validated in the literature. Parameter studies have been conducted to investigate the influences of the piezoelectric patch dimensional parameters, vibration system parameters, friction model parameters, methods of electrical connections, and different piezoelectric materials on the energy generation performance to provide guidance for better design. Under ideal experiment conditions with proper parameters, a volume of 6.25×10^(-8) m3 PZT4 piezoelectric material indicates RMS charging power density of 5.38×10^3 Wm-3 and 4.70×10^3 Wm-3 with electrically in parallel and electrically in series, respectively. While using the same amount of material and structural setup, the single crystal PMN-PT piezoelectric material shows RMS charging power density of 2.72×10^4 Wm-3 and 2.58×10^4 Wm-3 with electrically in parallel and electrically in series, correspondingly. These promising results demonstrate that close to W-level RMS charging power output may be realized by structure optimization of energy generator design and incorporating multiple generators together for operation. Possible incorporation into vehicle braking systems can be considered to utilize the wasted friction energy, and it may offer an energy supply for low-power wireless devices.

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Section: Parameter Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and analysis of a d15 mode piezoelectric energy generator using friction-induced vibration

Xiao

Karnaoukh²,

Wu³

2023

Smart Mater. Struct.

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“…Complex Eigenvalue Analysis (CEA) is the prevailing simulation method within the automotive industry for assessing the squealing tendencies of friction brakes or examining modifications and their impact on squealing behavior [42]. This standard procedure can be divided into four main steps which are described in more detail e.g., [43][44][45]. The first step is a nonlinear static contact analysis whereby the brake pressure is applied and then the contact areas and forces are determined.…”

Section: Complex Eigenvalue Analysis (Cea)mentioning

confidence: 99%

On Drum Brake Squeal—Assessment of Damping Measures by Time Series Data Analysis of Dynamometer Tests and Complex Eigenvalue Analyses

Gräbner,

Schmid,

von Wagner

2023

Machines

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Brake squeal—an audible high-frequency noise phenomenon in the range between 1 kHz and 15 kHz resulting from self-excited vibrations—is one of the main cost drivers while developing brake systems. Increasing damping is often a crucial factor in the context of self-excited vibrations. Countermeasures applied for preventing brake squeal have been investigated particularly for disk brakes in the past. However, in recent years, drum brakes have once again become more important, partly because of the issue of particle emissions. Concerning noise problems, drum brakes have a decisive advantage compared to disk brake systems in that the outer drum surface is freely accessible for applying damping devices. This paper focuses on the fundamental proving and evaluation of passive damping measures on a simplex drum brake system. To obtain a detailed understanding of the influence of additional damping on the squealing behavior of drum brakes, extensive experimental investigations are performed on a brake with an intentionally introduced high squealing tendency in the initial configuration. This made it possible to investigate the influence of different types of damping measures on their effectiveness. Techniques from the field of big data analysis and machine learning are tested to detect squeal in measured time series data. These techniques were remarkably reliable and made it possible to detect squeal efficiently even in data that was not generated on a traditional costly NVH brake dynamometer. To investigate whether the simulation method usually used for the simulation of brake squeal is applicable to depicting the influence of additional damping in drum brakes, a complex eigenvalue analysis was performed with Abaqus, and the results were compared with those from the experiments.

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“…Given that friction vibration noise arises from unstable friction interface vibrations, researchers have explored the macroscopic relationship between the friction interface and noise. Their findings indicate that modifying the friction interface or employing surface texturing can effectively diminish interface vibrations, reducing or eliminating noise occurrence [3][4][5] . The inspiration for surface texture design stems from nature, where organisms exhibit geometrically non-smooth morphologies on their body surfaces.…”

Section: Introductionmentioning

confidence: 99%

Study of the effect of composite texture surfaces on brake friction squeal behavior

2024

Third International Conference on Advanced Manufacturing Technology and Electronic Information (AMTEI 2023)

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The brake is a crucial automotive safety component, and the persistent brake squeal noise significantly impacts passengers' long-term riding experience. Utilizing a non-smooth textured surface enhances the tribological behavior of the interface, offering a novel solution to address brake friction squeal. In this study, we design a brake disc with a composite structured surface, modeled using ABAQUS and analyzed through complex eigenvalue analysis. Results indicate that the composite textured surface disc, compared to its smooth counterpart, exhibits a smaller tendency for unstable vibration and a larger negative damping ratio. This highlights its heightened efficacy in mitigating brake friction squeal behavior.

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Disc Brake Squeal Suppression Through Chamfered and Slotted Pad

Cited by 9 publications

References 21 publications

Design and analysis of a d15 mode piezoelectric energy generator using friction-induced vibration

Design and analysis of a d15 mode piezoelectric energy generator using friction-induced vibration

On Drum Brake Squeal—Assessment of Damping Measures by Time Series Data Analysis of Dynamometer Tests and Complex Eigenvalue Analyses

Study of the effect of composite texture surfaces on brake friction squeal behavior

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