scholarly journals The Effect of Bionic Brake Drum Point Unit Body on Friction and Wear of Brake Pad

2020 ◽  
Vol 1699 ◽  
pp. 012022
Author(s):  
Haiyan Hu ◽  
Haiyang Yang ◽  
Jiandong Yang ◽  
Qingnian Wang ◽  
Ti Zhou
Keyword(s):  
Friction And Wear ◽  
Brake Pad ◽  
Brake Drum

scholarly journals The Effect of Bionic Brake Drum Striped Unit Body on Friction and Wear of Brake Pad

2020 ◽  
Vol 213 ◽  
pp. 02012
Author(s):  
Haiyan Hu ◽  
Haiyang Yang ◽  
Jiandong Yang ◽  
Qingnian Wang ◽  
Ti Zhou
Keyword(s):  
Stress Distribution ◽  
Contact Stress ◽  
Friction And Wear ◽  
Normal Pressure ◽  
External Pressure ◽  
Brake Pad ◽  
Distribution Law ◽  
Contact Surfaces ◽  
Brake Drum ◽  
Contact Stress Distribution

In this paper, the contact mechanics is applied to analyse the interaction between the striped unit body on the bionic brake drum and the brake pad. The contact stress distribution law of two objects interaction is obtained. According to the stress distribution law the change of the friction and wear of the striped unit body on the brake pad is derived. Considering the change of the surface feature regardless of other factors, the friction wear of the striped unit body on the brake pad has increased by more than 27%. It is found that small convex striped unit bodies are added on the surface of the bionic brake drum, which makes the contact surface between the brake drum and the brake pad no longer the original plane contact. Therefore, the pressure and direction between the contact surfaces are various. Besides, even if the external pressure does not change, the contact normal pressure between the contact surfaces will be increased which increases the friction wear on the brake pad accordingly.

scholarly journals The Friction and Wear Influence of Laser Processing Bionic Brake Drum Unit on the Brake Pad

2021 ◽  
Vol 233 ◽  
pp. 04006
Author(s):  
Haiyan Hu ◽  
Haiyang Yang ◽  
Jiandong Yang ◽  
Qingnian Wang ◽  
Ti Zhou
Keyword(s):  
Light Intensity ◽  
Intensity Distribution ◽  
Laser Processing ◽  
Friction And Wear ◽  
Laser Intensity ◽  
Brake Pad ◽  
Environmental Friendliness ◽  
Brake Drum ◽  
Elastic Mechanics ◽  
Relevant Factors

This article starts with the analysis of the contact between the laser processing bionic brake drum unit body and the brake pad and performs the analysis of the force between the unit body and the brake pad based on elastic mechanics and contact mechanics. By using the Preston equation, the wear of the brake pad caused by the unit body is obtained, as well as the relevant factors and influence rule which affects the wear of the brake pad are found. During laser processing on the bionic brake drum unit body, in order to reduce wear of brake pad, the height of the unit body should be minimized. Besides, the light intensity at the centre of the laser spot should be reduced, and the laser intensity distribution should be more uniform, which can effectively improve the environmental friendliness of the brake drum.

THE NEW INERTIA DYNAMOMETER FOR FRICTION AND WEAR TESTING OF BRAKE PADS AND BRAKE DISCS

Tribologia ◽  
2019 ◽  
Vol 286 (4) ◽  
pp. 113-119
Author(s):  
Waldemar TUSZYŃSKI ◽  
Michał GIBAŁA ◽  
Andrzej GOSPODARCZYK ◽  
Stanisław KOZIOŁ ◽  
Krzysztof MATECKI ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Friction And Wear ◽  
Wear Testing ◽  
Driving Safety ◽  
Brake Disc ◽  
Brake Pad ◽  
Vehicle Class ◽  
Brake Pads ◽  
Test Methodology ◽  
Brake Discs

For the sake of driving safety, the right choice of the brake pad friction material and its manufacturing processes to obtain the appropriate tribological properties is a matter of priority for brake pad manufacturers. Determination of the tribological properties is best done in component tests, i.e. in the setup: brake pads – brake disc. At the request of one of the domestic brake pad manufacturers, as part of the POIR project, an inertia dynamometer for testing friction and wear of brake pads and brake discs was developed and manufactured, which was given the symbol T-33. A test methodology was developed based on the “Cold application section” procedure described in SAE J2522:2003. The T-33 inertia dynamometer is designed for testing brake pads and brake discs intended for five vehicles representing the passenger vehicle class and vans. The paper presents the new test stand, test methodology, and results of verification tests of the T-33 dynamometer (interlaboratory comparison tests) performed on the Cinquecento vehicle brake setup.

scholarly journals Simulation Study on Friction and Wear Law of Brake Pad in High-Power Disc Brake

2019 ◽  
Vol 2019 ◽  
pp. 1-15
Author(s):  
S. Zhang ◽  
Q. Hao ◽  
Y. Liu ◽  
L. Jin ◽  
F. Ma ◽  
...  
Keyword(s):  
High Power ◽  
Friction And Wear ◽  
Element Model ◽  
Calculation Model ◽  
Brake Disc ◽  
Disc Brake ◽  
Wear Depth ◽  
Brake Pad ◽  
Wear Calculation ◽  
Wear Law

For the serious and uneven wear of the brake pad in the high-power disc brake during braking, the dynamic variation of the brake disc and the brake pad interface variable is considered, the wear calculation model is established based on the friction and wear mechanism, and the wear depth and volume of the brake pad can be calculated by equations. A finite element model of the brake disc and the brake pad is established by DEFORM software which can analyze wear of the brake pad directly. The variation trend of wear during braking is studied, and influences of braking load and initial braking speed on the wear are analyzed. The results show that the amount of the wear increases rapidly in the early wear stage of braking, and it becomes slow in the later stage; the wear of the brake pad is serious at the friction inlet and outlet, and the middle area of the brake pad is lightly worn; heavy braking load and high initial braking speed can exacerbate the wear of the brake pad.

Effect of resin content on tribological behavior of brake pad composite material

2018 ◽  
Vol 72 (2) ◽  
pp. 195-202
Author(s):  
Harun Yanar ◽  
Hasan Huseyin Ayar ◽  
Muhammet Demirtas ◽  
Gencaga Purcek
Keyword(s):  
Friction And Wear ◽  
Wear Behavior ◽  
Three Dimensional ◽  
Test System ◽  
Linear Increase ◽  
Resin Content ◽  
Brake Pad ◽  
Composite Matrix ◽  
Content Type ◽  
Composite Samples

Purpose This paper aims to investigate the effect of straight phenolic resin content on the fade behavior, frictions and wear characteristics of pre-determined brake pad composite matrix having specific amount of barite (BaSO4), rock wool, Kevlar, graphite and magnetite. Design/methodology/approach Different amount of resin ranging between 16 and 20 wt. per cent were added by changing only the filler (barite) content of composite matrix. Subsequently, friction and wear behavior of the composite samples were analyzed using a special pin-on-disc type test system developed for brake pad sample. The worn surfaces were investigated by SEM and three-dimensional (3D) surface profilometer. Findings The average coefficient of friction (CoF) of composite samples and temperature of the disc surface showed a linear increase with decreasing the resin content. The sample having 20 wt. per cent resin showed the minimum wear rate with smooth worn surface. But the amount of fade is quite high in that sample. Decreasing resin content decreased the fade formation, and the composite with 16 per cent resin brought about the minimum fade formation. As the fade formation is unwanted in brake pad applications, the composite with 16 wt. per cent resin was proposed as the most appropriate one considering the performance parameters related to friction and wear. Originality/value This paper optimizes the resin content of composite brake pad materials to achieve the best combination of its tribo-performance and mechanical properties and provides valuable information for scientists and engineers working in that area.

A Study on Mechanical and Tribological Behavior of Brake Pad Materials

2017 ◽  
Vol 737 ◽  
pp. 162-167 ◽  
Author(s):  
Sanjeet Kumar ◽  
Deepak Kumar ◽  
Jayant Jain
Keyword(s):  
Friction And Wear ◽  
Tribological Behavior ◽  
Brake Pad ◽  
Rotating Disc ◽  
Friction Behavior ◽  
Materials Properties ◽  
Brake Pads ◽  
Braking System ◽  
Wear And Friction ◽  
Wear Response

Controlled friction and wear are the prime requirements of a braking system. The generation of wear debris depends on the brake materials properties, which in turn controls the tribological behavior. Present study deals with the performance evaluation and failure analysis of two commercial brake pads. Tribo Testing Rig (TTR) was used to evaluate the performance of brake. The tests were performed by making a tribo-pair of brake pad against the rotating disc with varying speed and pressure conditions. The wear response was quantified by mass loss, while the friction was measured in terms of coefficient of friction. Virgin and worn surfaces were analyzed using X-ray diffractometer (XRD), energy dispersive spectroscopy (EDAX) and Scanning electron microscope (SEM) to understand the wear and friction mechanisms. It was found that the type of constituents present in the brake-pad material and their spatial distribution plays an important role in controlling the wear and friction behavior. The high wear and friction was attributed to the presence of bulky particles of Fe and Si.

scholarly journals Friction and wear studies on the temperature dependence of brake-pad materials containing brass

2013 ◽  
Vol 7 ◽  
pp. 01020 ◽  
Author(s):  
Fatima Eddoumy ◽  
Haytam Kasem ◽  
Philippe Dufrenoy ◽  
Jean-Pierre Celis ◽  
Yannick Desplanques
Keyword(s):  
Temperature Dependence ◽  
Friction And Wear ◽  
Brake Pad

Effect of Brake Pad Design On Friction and Wear with Hard Particle Present

2014 ◽  
Vol 71 (2) ◽  
Author(s):  
M.K. Abdul Hamid ◽  
N.I. Shasudin ◽  
A.R. Mat Lazim ◽  
A.R. Abu Bakar
Keyword(s):  
Friction And Wear ◽  
Load Condition ◽  
Hard Particle ◽  
Brake Pad ◽  
Braking Performance ◽  
Wear Analysis ◽  
Brake Performance ◽  
Friction Performance ◽  
Brake Dynamometer ◽  
Braking Process

Brake pad and disc design are important factors in ensuring excellent brake performance. But, particles from the environment can easily enter and interrupt the braking process and reduce braking performance. Friction depends on the design and surface properties of the pad and the disc. Wear happens in the brake system as the pad and disc try to withstand the braking force during the braking process.  An experiment using brake dynamometer is done in order to determine the design effects on friction and wear when hard particle are present during the braking process. The test used three different brake pad designs under medium sliding load condition. It is found that Design 2 with a middle line groove provides better and stable brake torque and friction performance compared to Design 1 and Design 3. Design 2 also gavethe smallestweight loss inthe wear analysis of the pad.

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