Academic literature on the topic 'Brake squeal instability'

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Journal articles on the topic "Brake squeal instability"

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Nakai, M., and M. Yokoi. "Band Brake Squeal." Journal of Vibration and Acoustics 118, no. 2 (1996): 190–97. http://dx.doi.org/10.1115/1.2889648.

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The purpose of this paper is to investigate the squealing mechanism of band brakes in order to develop effective treatments for the reduction or elimination of squeal noise. With increasing rotational drum speed, squeal frequency increases up to a constant frequency. This constant squeal frequency coincides precisely with the frequency of instability obtained by a linear analysis of the motion of a band on an elastic foundation when the frictional force between the lining of the band and the drum is taken into account. Through experiments and analyses, it will be demonstrated that squeals are
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Nishiwaki, M. "Generalized Theory of Brake Noise." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 207, no. 3 (1993): 195–202. http://dx.doi.org/10.1243/pime_proc_1993_207_180_02.

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Eliminating brake noises generated during brake application is an important issue in the improvement of comfort in vehicles. Brake noises (frequency 1–15 kHz) are often called brake squeal. On the other hand, brake noises (frequency 200–500 Hz) are often called brake groan noise. The studies on drum brake squeal, disc brake squeal and disc brake groan noise have already been presented in references (2), (3) and (4), where theoretical analyses on these brake noises were described. This paper shows that the equations of motion are represented by the same type of equations. Based on these analyse
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Lü, Hui, Wen-Bin Shangguan, and Dejie Yu. "A universal approach to squeal analysis of the disc brakes involving various types of uncertainty." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 232, no. 6 (2017): 812–27. http://dx.doi.org/10.1177/0954407017709644.

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On the basis of fuzzy random variables, a universal approach to squeal analysis of the disc brakes involving various types of uncertainty is proposed in this paper. In the proposed approach, first, the brake stability analysis function related to reliability is constructed with fuzzy random variables. Next, the fuzziness represented by fuzzy random variables is decomposed into interval uncertainties by using a level-cut strategy. Then, the expectations and the variances of the brake stability analysis function are approximately solved by the random moment method at different cut levels, and th
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Huynh, Le Hong Thai, Aleš Dittrich, and Ondřej Dráb. "Model Predict Vibration and Noise of Disc Brake." Applied Mechanics and Materials 232 (November 2012): 461–64. http://dx.doi.org/10.4028/www.scientific.net/amm.232.461.

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The problem brake squeal is one of the important areas of application in the automotive industry. Most brake squeal is produced by vibration (resonance instability) of the brake components, especially the pads and discs are known as force-coupled excitation. Until now have many research about predict vibration and noise of disc brake but unfortunate the results is not satisfied. This paper presents model for prediction stability of disc brake for a model four degrees of freedom. The result shows stability of system and when occurrence brake squeal.
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Zhang, Z., S. Oberst, and JCS Lai. "Instability analysis of friction oscillators with uncertainty in the friction law distribution." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 230, no. 6 (2015): 948–58. http://dx.doi.org/10.1177/0954406215616421.

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Despite substantial research efforts in the past two decades, the prediction of brake squeal propensity, as a significant noise, vibration and harshness (NVH) issue to automotive manufactures, is as difficult as ever. This is due to the complexity of the interacting mechanisms (e.g. stick-slip, sprag-slip, mode coupling and hammering effect) and the uncertain operating conditions (temperature, pressure). In particular, two major aspects in brake squeal have attracted significant attention recently: nonlinearity and uncertainty. The fugitiveness of brake squeal could be attributed to a number o
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Kim, Sungyuk, Seongjoo Lee, Shinwook Kim, and Jaehyeon Nam. "Influence of Brake Pad Temperature Variation on the Squeal Noise Characteristics of Disc’s In-Plane Vibration Mode." Sensors 25, no. 13 (2025): 4080. https://doi.org/10.3390/s25134080.

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This study investigated the squeal noise characteristics of the in-plane mode of the disc in a disc brake system as influenced by the temperature of the brake pad. The temperature range of the brake pad was set between 50 °C and 300 °C, and the squeal noise was analyzed by calculating the complex eigenvalues using the finite element method (FEM). The FEM analysis indicated that instability was most sensitive near 80 °C, and it was observed that instability exhibited mode exchange from the disc’s in-plane mode to the out-of-plane mode in a nearby frequency band due to thermal deformation of the
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Ghorbel, Ahmed, Becem Zghal, Moez Abdennadher, Lassâad Walha, and Mohamed Haddar. "Investigation of friction-induced vibration in a disk brake model, including mode-coupling and gyroscopic mechanisms." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 2-3 (2019): 887–96. http://dx.doi.org/10.1177/0954407019845723.

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The brake squeal reduction has been extensively investigated in many academic and industrial researchers. Friction-induced vibrations can be considered as a dynamic instability problem. Generally, automotive engineers and researchers working in the domain of disk brake noise treat instabilities due to the force of friction as a friction-induced vibration. In the case of squeal noise, mode coupling may cause instability of the system. The aim of this article is to propose a minimal two degree of freedom disk brake model in order to investigate the effects of different parameters on mode-couplin
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Ouyang, H., and J. E. Mottershead. "A Bounded Region of Disc-Brake Vibration Instability." Journal of Vibration and Acoustics 123, no. 4 (2001): 543–45. http://dx.doi.org/10.1115/1.1394200.

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This paper introduces the velocity-dependent friction law with the Stribeck effect in a moving load model for the vibration and squeal of a car disc brake. Simulated numerical results produce a bounded region of instability for the rotating speed of the disc which is compatible with observed squeal phenomenon.
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Tang, B., JL Mo, X. Zhang, Q. Zhang, MH Zhu, and ZR Zhou. "Experimental investigation of the squeal characteristics in railway disc brakes." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 232, no. 11 (2018): 1437–49. http://dx.doi.org/10.1177/1350650117754002.

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In this study, a bespoke small-scale brake dynamometer was developed to simulate the braking conditions of a railway disc brake system. Braking squeal experiments were performed with this brake dynamometer at different braking pressures and disc rotation speeds, and the influence of these braking parameters on the generation and characterization of the squeal noise was evaluated and discussed. The obtained results show that both the braking pressure and the disc rotation speed have a significant influence on the generation and evolution of the squeal noise. Higher rotation speeds are found to
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Pan, Gongyu, and Lei Chen. "Impact Analysis of Brake Pad Backplate Structure and Friction Lining Material on Disc-Brake Noise." Advances in Materials Science and Engineering 2018 (2018): 1–9. http://dx.doi.org/10.1155/2018/7093978.

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This study proposes a three-layer brake pad design, on which a six-DOF dynamic model of brake disc-brake pad is established, and the factors affecting the system instability are analyzed. The analysis shows that the change of mass and stiffness of the brake pad will affect the stability of the system. From the linear complex eigenvalue analysis, the unstable vibration modes of the brake system are predicted, and the effectiveness of the complex mode analysis model is verified by the brake system bench test. Brake pads with different structural shapes are designed, and their influence on the st
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Dissertations / Theses on the topic "Brake squeal instability"

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Strubel, Nicolas. "Brake squeal : identification and influence of frictional contact localizations." Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILN059.

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En tant que radiations acoustiques intenses impliquant de conséquentes nuisances environnementales ainsi que de nombreux retours clients, le crissement des systèmes de freinage est un problème de vibration induite par frottement dépendant indubitablement de problématiques multi-physiques et multi-échelles. Parmi ces dernières, la structure du système, les paramètres opérationnels de freinage, les interfaces de contact frottant, couplés à une dépendance en température, ainsi que les non-linéarités de contact ou les aspects tribologiques, sont des éléments affectant considérablement le crissemen
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Corradi, Grégoire. "Approches numérique et expérimentale pour des structures à interfaces frottantes : Application au crissement de frein." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEC044.

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Les systèmes de freins sont parfois sujets au crissement qui sont des vibrations auto-entretenues induites par le frottement et caractérisées par un contenu fréquentiel formé de raies à hautes fréquences supérieures à 1kHz. Ces vibrations et bruits intenses sont une source de gêne pour les usagers automobile, un problème de santé publique pour les riverains de gares lors du freinage de TGV et peuvent amener à l'endommagement du train d'atterrissage sur les avions.Afin de comprendre ce phénomène et pour le reproduire numériquement, une stratégie complète d'étude est développée. Elle se base sur
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Renaud, Franck. "Etude de l'incidence des comportements dissipatifs dans les instabilités vibratoires des systèmes de freinages." Phd thesis, Ecole Centrale Paris, 2011. http://tel.archives-ouvertes.fr/tel-00585269.

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Les instabilités vibratoires, telles que le crissement de frein, sont souvent étudiées par des analyses aux valeurs propres complexes sur des modèles éléments finis (EF). L'objectif de cette thèse est d'enrichir ces modèles en prenant en compte la viscoélasticité dont les effets sont l'amortissement et la rigidification des matériaux en fonction de la fréquence. Pour cela un viscoanalyseur a été développé. Il permet de caractériser en cisaillement les matériaux entre 100 et 3500Hz, sans utiliser les équivalences temps-température. Ce viscoanalyseur permet d'alimenter en paramètres le modèle rh
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Gatt, Antoine. "Instabilité des freins aéronautiques : Approche transitoire et multi-physique." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEC024.

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Les freins aéronautiques sont soumis à des instabilités vibratoires induites par le frottement. Il en résulte des vibrations qui présentent un risque pour la structure du frein et de l’atterrisseur et posent des problèmes d’intégration. Safran Landing Systems doit donc répondre à des spécifications avionneurs strictes sur les niveaux des vibrations générées par son équipement. Le respect de ces spécifications est actuellement contrôlé par la réalisation d’essais de freinage longs et coûteux. L’objectif de ces travaux de recherche est de reproduire numériquement ces phénomènes vibratoires via d
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Rodrigues, António José da Guia. "Disc brake squeal Mode coupling instability type." Master's thesis, 2017. https://repositorio-aberto.up.pt/handle/10216/106021.

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Rodrigues, António José da Guia. "Disc brake squeal Mode coupling instability type." Dissertação, 2017. https://repositorio-aberto.up.pt/handle/10216/106021.

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Conference papers on the topic "Brake squeal instability"

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Abdelhamid, Mohamed Khalid. "Structural Instability Test/Analysis of Brake Squeal." In SAE Noise and Vibration Conference and Exposition. SAE International, 1995. http://dx.doi.org/10.4271/951281.

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Nakai, Mikio, Takuya Matsushita, and Masayuki Yokoi. "Squeal of a Wheel Brake With Double Shoes." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21508.

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Abstract The purpose of this paper is to investigate the squealing mechanism of a wheel brake with double shoes to develop effective treatments for the reduction. Detailed observations reveal that the squeal frequencies are closely related to the natural frequencies of the system. These squeal frequencies coincide with the frequencies of instability obtained by a linear analysis of the system. It is demonstrated that squeals are induced by the coupling of the modes of the disk and both beams, two modes of a single beam and the modes of the disk and a single beam.
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Hultén, Johan O. "Friction Phenomena Related to Drum Brake Squeal Instabilities." In ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/vib-4161.

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Abstract Several experiments and analyses have carried out in the field of brake squeal and there are many suggestions to be found in the literature as to the cause of brake squeal. In this paper a mathematical model for friction-induced vibration and noise generation is used to study the influence of these different squeal excitation types. Squealing brakes are excited by the friction forces in the interface between the drum and the linings. This friction and its interaction with the brake structure can be modeled in many different ways. In this paper, different self-excitation types identifi
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Nobari, A., H. Ouyang, and P. Bannister. "Uncertainty Quantification of the Squeal Instability in Real Brake Systems." In Second International Conference on Vulnerability and Risk Analysis and Management (ICVRAM) and the Sixth International Symposium on Uncertainty, Modeling, and Analysis (ISUMA). American Society of Civil Engineers, 2014. http://dx.doi.org/10.1061/9780784413609.046.

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Chowdhary, Harsh V., Anil K. Bajaj, and Charles M. Krousgrill. "An Analytical Approach to Model Disc Brake System for Squeal Prediction." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21560.

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Abstract The squeal noise arising due to friction-induced vibrations in brakes continues to be a major challenge for automotive manufacturers. To predict one of the mechanisms behind disc brake squeal, an analytical model is developed for the disc brake system. The brake rotor is represented by a thin plate of equivalent modal characteristics and the backing plates are modeled as thin annular sector plates using Rayleigh-Ritz approach. The two structural models are then coupled using linear elastic springs and Coulomb friction at the interface, and Lagrangian approach is used to derive the equ
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Spelsberg-Korspeter, Gottfried. "On the Avoidance of Friction Induced Vibrations by Structural Optimization." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-24576.

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Rotors show very rich dynamical behavior especially when friction is involved. Due to the interaction of nonconservative, dissipative and gyroscopic forces a very interesting stability behavior can be observed. Instability of the rotor can yield severe problems, for example in the context of brakes and clutches it causes squeal, in the process of paper calendering the duration of the rollers is decreased substantially. This paper deals with the problem of how to design a rotor such that it is robust against friction induced vibrations using structural optimization. The problem is addressed usi
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Tanamachi, Shuhei, Tom Millsap, and Yoshiyuki Yamaguchi. "Sound Source Identification of In-Plane Squeal of Disc Brakes Using Array Microphones and Its Verification by Acoustic Simulation." In Brake Colloquium & Exhibition - 41st Annual. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-1869.

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<div class="section abstract"><div class="htmlview paragraph">As the vehicle electrification progresses and the demand for acoustic comfort increases, the NVH performance of brakes becomes more important theme. In-plane squeal of disc brake is one of phenomena that is difficult to countermeasure. In this study, we used array microphones to search for sound sources of in-plane squeal in order to elucidate the mechanism. The Microphones were set in the out-of-plane direction and the lateral direction of a disc in brake components on a full-sized dynamometer. In the vibration mode in
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Song, Gavin, Arthur Wang, Pari Medhora, Michael Vlademar, and Narayana Venugopal. "Time-Domain Explicit Dynamic CAE Simulation for Brake Squeal." In Noise and Vibration Conference & Exhibition. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-1061.

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<div class="section abstract"><div class="htmlview paragraph">Disc brake squeal is always a challenging multidisciplinary problem in vehicle noise, vibration, and harshness (NVH) that has been extensively researched. Theoretical analysis has been done to understand the mechanism of disc brake squeal due to small disturbances. Most studies have used linear modal approaches for the harmonic vibration of large models. However, time-domain approaches have been limited, as they are restricted to specific friction models and vibration patterns and are computationally expensive. This rese
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Huang, Jinchun, Charles M. Krousgrill, and Anil K. Bajaj. "Estimation of Critical Value of Friction Coefficient for Brake Squeal Analysis." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-85373.

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Automotive brake squeal which is generated during brake application has become a major concern in automotive industry. Warranty costs for brake noise have been greatly increasing in recent years. Brake noise and vibration control are important for the improvement of vehicle quietness and passenger comfort. In this work, the mode coupling instability mechanism is discussed, and a method to estimate the critical value of friction coefficient is presented to predict the onset of brake squeal. A modal expansion method is developed to calculate eigenvalue and eigenvector sensitivities. Different ty
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Tan, Chin An, and Jinsha Li. "A Parametric Study on the Friction-Induced Vibration of a Brake Model During Decelerated Sliding." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-85361.

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In this paper, the friction-induced vibration of a simple disc brake model during decelerated sliding is investigated. A three-degree-of-freedom physical model of a disc brake system is considered; the brake pads are modeled as rigid blocks interacting with a rigid translating strip (rotor) through friction. This model simulates the transient dynamics of the longitudinal motions (in the direction of sliding) of the pads during braking. A Coulomb-type friction model is adopted, with the coefficient of friction approximated by an analytical function of the sliding speed at the rotor-pads interfa
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