Quantification of brake creep groan in vehicle tests and its relation with stick–slip obtained in laboratory tests

Neis, Patric Daniel; Ferreira, Ney Francisco; Poletto, Jean Carlos; Matozo, Luciano Tedesco; Masotti, Diego

doi:10.1016/j.jsv.2016.01.036

Cited by 35 publications

(12 citation statements)

References 34 publications

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“…Fuadi et al (2009Fuadi et al ( , 2010) studied creep groan by considering a caliper-slider experimental model, and derived a map showing necessary conditions for avoiding creep groan. Results of creep groan vehicle tests were shown by Neis et al (2016) and their relation with stick-slip in laboratory tests was investigated. However, most of those works were experimental investigations, and a model showing high agreement with experimental results is still to be developed.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental investigations of the bifurcation behavior of creep groan of automotive disk brakes

Zhao

Gräbner

Wagner

2018

jtam

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There are several low frequency vibration phenomena which can be observed in automotive disk brakes. Creep groan is one of them provoking noise and structural vibrations of the car. In contrast to other vibration phenomena like brake squeal, creep groan is caused by the stick-slip-effect. A fundamental investigation of creep groan is proposed in this paper theoretically and experimentally with respect to parameter regions of the occurrence. Creep groan limit cycles are observed while performing experiments in a test rig with an idealized brake. A nonlinear model using the bristle friction law is set up in order to simulate the limit cycle of creep groan. As a result, the system shows three regions of qualitatively different behavior depending on the brake pressure and driving speed, i.e. a region with a stable equilibrium solution and a stable limit cycle, a region with only a stable equilibrium solution, and a region with only a stable limit cycle. The limit cycle can be interpreted as creep groan while the equilibrium solution is the desired vibration-free case. These three regions and the bifurcation behavior are demonstrated by the corresponding map. The experimental results are analyzed and compared with the simulation results showing good agreement. The bifurcation behavior and the corresponding map with three different regions are also confirmed by the experimental results. At the end, a similar map with the three regions is also measured at a test rig with a complete real brake.

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Section: Introductionmentioning

confidence: 99%

Theoretical and experimental investigations of the bifurcation behavior of creep groan of automotive disk brakes

Zhao

Gräbner

Wagner

2018

jtam

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“…The gap of static and dynamic friction coefficient was verified to contribute to the propensity of creep groan [4]. The stickslip index obtained in tribotests was demonstrated to have a good correlation with the brake creep groan in vehicle tests [5]. Meanwhile, many theoretical models have been proposed to explain creep groan.…”

Section: Introductionmentioning

confidence: 96%

A Transient Dynamic Model of Brake Corner and Subsystems for Brake Creep Groan Analysis

Meng

Zhang

et al. 2017

Shock and Vibration

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To improve the understanding of brake creep groan, both experimental and numerical studies are conducted in this paper. Based on a vehicle road test under the condition of downhill, complicated stick-slip type motion of caliper and its correlation with the interior noise were analyzed. In order to duplicate these brake creep groan phenomena, a transient dynamic model including brake corner and subsystems was established using finite element method. In the model, brake components were considered to be flexible body, and the subsystems including driveline, suspension, tire, and vehicle body were considered to be rigid body. Simulation and experimental results of caliper vibration in time and frequency domains were compared. It was demonstrated that the new model is effective for the prediction and analysis of brake creep groan, and it has higher accuracy compared to the previous model without the subsystems. It is also found that the lining and caliper not only have stick-slip motion in each coordinate direction but also have translational and torsional movements in plane, which relate to the microscopic sticking and slipping, friction coefficient, and forces, as well as the contact status at the friction interface.

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“…In the last few decades, many scholars and enterprises have conducted numerous studies to investigate brake squeal related to friction. [10][11][12][13][14][15][16][17][18][19] Mechanisms were determined to explain the occurrence of brake squeal, such as stick-slip, negative friction-velocity slope, and coupling mechanisms. Although these mechanisms are helpful for understanding brake squeal, none of them explain the details related to brake squeal, thus the underlying mechanisms of brake squeal generation have not been determined.…”

Section: Introductionmentioning

confidence: 99%

Tribological and dynamical analysis of a brake pad with multiple blocks for a high-speed train

Tang

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part J:

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In this research, the tribological and dynamical characteristics of a brake pad with multiple blocks are investigated using experimental and numerical methods. A dynamometer with a multiblock brake pad configuration on a brake disc is developed and a series of drag-type tests are conducted to study the brake squeal and wear behavior of a high-speed train brake system. Finite element analysis is performed to derive physical explanations for the observed experimental phenomena. The experimental and numerical results show that the rotational speed and braking force have important influences on the brake squeal; the trends of the multiblock and single-block systems are different. In the multiblock brake pad, the different blocks exhibit significantly different magnitudes of contact stresses and vibration accelerations. The blocks located in the inner and outer rings have higher vibration acceleration amplitudes and stronger vibration energies than the blocks located in the middle ring.

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Quantification of brake creep groan in vehicle tests and its relation with stick–slip obtained in laboratory tests

Cited by 35 publications

References 34 publications

Theoretical and experimental investigations of the bifurcation behavior of creep groan of automotive disk brakes

Theoretical and experimental investigations of the bifurcation behavior of creep groan of automotive disk brakes

A Transient Dynamic Model of Brake Corner and Subsystems for Brake Creep Groan Analysis

Tribological and dynamical analysis of a brake pad with multiple blocks for a high-speed train

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