Experimental and Numerical Modelling of Friction Induced Noise in Disc Brakes

Hendricx, Wim; Garescì, Francesca; Pezzutto, A.; Auweraer, Herman Van der

doi:10.4271/2002-01-1192

Cited by 12 publications

(5 citation statements)

References 8 publications

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“…Results here show that instantaneous mode squeal could be caused by in-plane pad vibrations. Strong local effects in the contact area between the pad and the plate/disc are similar to results reported via acoustic near-field holography [47]. However, the influence of instantaneous surface topography during frictional contact [51] and subsequent sound emission is difficult to quantify analytically or numerically [2,27].…”

Section: Discussionmentioning

confidence: 54%

“…The acoustic radiation of the pad is more important than one might expect, especially at the pad modes' resonance frequencies. Based on their results from acoustic holography, Hendricx et al [47] found that local effects and the contact at the pad to be more important in acoustic radiation than the disc itself. This is not intuitive as the disc has a larger surface [29], but can be explained by instantaneous mode squeal [4] caused by pad modes.…”

Section: Instantaneous Modesmentioning

confidence: 98%

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Squeal noise in simple numerical brake models

Oberst

Lai

2015

Journal of Sound and Vibration

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Section: Discussionmentioning

confidence: 54%

Section: Instantaneous Modesmentioning

confidence: 98%

Squeal noise in simple numerical brake models

Oberst

Lai

2015

Journal of Sound and Vibration

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“…Although a study of the link between friction-induced vibrations and squeal noise using acoustic measurements with a nine-microphone antenna was recently carried out by authors of [26]; these previously proposed results do not allow detailed analysis of the radiated field. Furthermore, specific studies on the acoustic holography of brake squeal have also been performed to measure the movement of the disc and the associated travelling waves [28,29]. Thus, Flint and Hald [29] used acoustic measurements to estimate the parietal velocity field of a braking system to characterise its dynamic behaviour.…”

Section: Introductionmentioning

confidence: 99%

Brake Squeal Investigations Based on Acoustic Measurements Performed on the FIVE@ECL Experimental Test Bench

Besset,

Lenoir,

Sinou

2023

Applied Sciences

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Radiated noise is a major topic of interest regarding the brake squeal phenomenon as it is directly linked to the noise generated which can be potentially detrimental to user comfort and perception. However, very few studies offer in-depth and comprehensive insight into the analysis and understanding of acoustic noise during squeal events. This study is intended to provide an original contribution to this issue by investigating acoustic phenomena occurring during the squeal phenomenon via a digital antenna composed of 117 microphones. Experiments are performed on the Friction-Induced Vibration and noisE test bench at Ecole Centrale de Lyon (FIVE@ECL). The first main aim is to investigate the characteristics of the acoustic radiated field during brake squeal and more particularly to describe the evolution of the radiated field patterns per revolution of the disc system. The second major aim is to illustrate the possibility of reconstructing the radiated acoustic field everywhere in the space surrounding the brake system, leading to the construction of a robust representation of 3D acoustic patterns, providing acoustic squeal events in the physical space around the brake system. Results show that the vibratory signature remains identical during squeal event braking test. The acoustic signature of squeal noise consists mainly of a fundamental frequency and its harmonic components, with secondary lower contributions from other fundamental frequencies. The associated radiated acoustic field during squeal events are characterized by different directivities and intensities of the acoustic radiated field for each squeal frequency, with potential changes in these directivities and intensities over short times corresponding to the rotation period of the disc.

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“…On the other hand, some researchers [23,26,27,28] are also interested in dealing with the problem of brake squeal by considering additionally the problem of acoustic radiated noise due to friction-induced vibration or roughness at the frictional interface. Nevertheless, in most cases, only one microphone is used for squeal noise measurement, except for studies specifically dedicated to acoustic holography on brake squeal in order to measure the disc motion and the associated traveling waves [29,30]. Thereby a specific study for a better understanding of the link between friction-induced vibrations and squeal noise via acoustic measurements is not deeply conducted.…”

Section: Introductionmentioning

confidence: 99%

Transient vibro-acoustic analysis of squeal events based on the experimental bench FIVE@ECL

2020

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The proposed study investigates the transient and stationary non-linear vibrations and acoustic phenomena occurring during the squeal phenomenon. Experiments are performed on the test bench Friction-Induced Vibration and noisE at Ecole Centrale de Lyon (FIVE@ECL).The first major contribution of the study is to demonstrate the ability of this test bench to reproduce transient squeal events for a given operational condition, allowing to conduct a thorough and robust study on the physical understanding of transient vibration and acoustic squeal events. The second main contribution is to discuss the potential links between the emergence of vibrations on the two pads, the disc and the caliper, and the squeal noise in near-field and far-field.

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Experimental and Numerical Modelling of Friction Induced Noise in Disc Brakes

Cited by 12 publications

References 8 publications

Squeal noise in simple numerical brake models

Squeal noise in simple numerical brake models

Brake Squeal Investigations Based on Acoustic Measurements Performed on the FIVE@ECL Experimental Test Bench

Transient vibro-acoustic analysis of squeal events based on the experimental bench FIVE@ECL

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