Analysis of Drum Brake System for Improvement of Braking Performance

Baba, Siti Nor Nadirah; Hamid, Muhammad; Soid, Shahril Nizam Mohamed; Zahelem, Mohd Nurhidayat; Omar, Mohd Suyerdi

doi:10.1007/978-3-319-72697-7_28

Cited by 7 publications

(2 citation statements)

References 5 publications

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“…Therefore, simpler drum brakes are often considered, which nevertheless meet the required braking characteristics. Drum brakes have many advantages in this context [16]. These advantages are robust design, reduced release of harmful abrasion emissions [17], and a clear weight advantage compared to the disc brake.…”

Section: Introductionmentioning

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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Section: Introductionmentioning

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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“…3 The frictional work will be converted into heat energy, resulting in a rapid rise in the temperature of the drum brake working surface, and then due to the excellent thermal conductivity of the grey iron and the airflow in the driving process, the temperature of the working surface will rapidly decrease. [4][5][6] As is known to all in the entire automobile industry, the braking system is one of the most significant indispensable links. In particular, drum brakes are mainly used in trucks and buses, and its working environment not only in the cities, especially in the relatively weak areas such as the environment of the mountainous area.…”

Section: Introductionmentioning

confidence: 99%

Effects of angle formation between melted zone and friction direction on thermal fatigue and wear resistance of truck drum brake

Zhou

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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The failure of grey cast iron drum brake is mainly caused by thermal fatigue crack running through the top along the axial direction, which has the characteristics of regional failure. By using the advantages of laser fabrication technology, the single models with five different angles combined with the anti-crack ring were designed. The optical microscope, scanning electron microscope and X-ray diffraction were used to characterize the microstructure and phase of the drum brake material grey cast iron and the bionic coupling unit. Both single models and double combination models were tested for thermal fatigue and wear after thermal fatigue, respectively. The effects of angle on the thermal fatigue and wear resistance of the bionic coupling models were investigated. Experimental results show that the microstructure of the unit was better than that of the base grey cast iron due to the appearance of ledeburite, martensite and residual austenite after laser treatment. Besides, thermal fatigue crack has a great influence on wear performance. The thermal fatigue crack and wear loss weight are the least in the model with anti-crack ring + 45°angle, the main crack length is the shortest. The service life of the drum brake with the double combination bionic coupling model is increased by 50% compared with that of the untreated drum brake in bench test.

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