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Dissertations / Theses on the topic 'Disc brakes'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 January 2023

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1

Stephens, Arthur William, and arthur stephens esb ie. "Aerodynamic Cooling of Automotive Disc Brakes." RMIT University. Aerospace, Mechanical and Manufacturing Engineering, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20070108.121737.

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Sufficient heat dissipation is crucial to the effective operation of friction based braking systems. Such cooling is generally provided by ensuring a sufficient supply of cooling air to the heated components, hence the aerodynamics in the region of the brake components is extremely important. The objective of the research was to develop an understanding of how aerodynamics could be used to improve the cooling of automotive disc brakes. Two separate sets of wind tunnel experiments were developed. Tests were performed on a vented disc (rotor) to measure the internal flow through the

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2

Pulugundla, Gautam. "CFD design analysis of ventilated disc brakes." Thesis, Cranfield University, 2008. http://dspace.lib.cranfield.ac.uk/handle/1826/6578.

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This thesis reports the numerical investigation of the automotive ventilated disc brake rotor. Disc brakes operate on the principle of friction by converting kinetic energy into heat energy. The main objective of a disc brake rotor is to store this heat energy and dissipate it as soon as possible. This work is carried out in a area where there is very limited understanding. Commercial CFD code FLUENT was used for carrying out the simulations with the rotor rotating in still air. Only one passage and blade were simulated as all the rotor passages were identical. Uniform temperatures were used o

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3

Koetniyon, Saiprasit. "Thermal stress analysis of automotive disc brakes." Thesis, University of Leeds, 2000. http://etheses.whiterose.ac.uk/2938/.

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A brake disc rotor forms pan of a foundation brake and rotates with the wheel hub assembly. The main function of a foundation brake is to generate a retarding torque by converting mechanical energy to thermal energy by virtue of the frictional work done in relative sliding at the rotor-pad interface. In practice, most brake discs arc made from cast iron and in use arc sometimes subjected to high thermal stresses which can lead to permanent plastic deformation and occasionally rotor cracking. The aim of the present work is to investigate the thermal response of such a cast iron brake disc using

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4

Ahmed, Ibrahim Lotfy Mohamed. "Study of the behaviour of vehicle disc brakes." Thesis, Northumbria University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393861.

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5

Dzirasa, Mawuli. "Experimental investigation of dither control for the suppression of automotive brake squeal." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/17604.

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6

Leigh, Benjamin David. "Strength degradation of carbon-carbon composites for aircraft brakes." Thesis, University of Bath, 1999. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285332.

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7

Wahlström, Jens. "A study of airborne wear particles from automotive disc brakes." Doctoral thesis, KTH, Maskinelement, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-31152.

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During braking, both the disc and pads in disc brakes are worn. Since disc brakes are not sealed,some of the wear particles generated can become airborne. Several studies have found anassociation between adverse health effects and the concentration of particles in the atmosphere,so it is of interest to improve our knowledge of the airborne wear particles generated by discbrakes. This thesis deals with experimental and computational methods focusing on airborne wearparticles from disc brakes. The eight appended papers discuss the possibility to both measure andnumerically determine the concentr

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8

Steel, William Perry. "Absolute displacement measurement of noisy disc brakes using holographic interferometry." Thesis, University of Huddersfield, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418627.

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9

Voller, Gordon Paul. "Analysis of heat dissipation from railway and automotive friction brakes." Thesis, Brunel University, 2003. http://bura.brunel.ac.uk/handle/2438/5558.

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The thesis presents research into the understanding and improvement of heat dissipation from friction brakes. The investigations involved two brake types, considered to be the most thermally loaded and therefore most challenging; axle mounted high speed railway and commercial vehicle disc brakes. All three modes of heat transfer (conduction, convection and radiation) and airflow characteristics have been analysed experimentally and theoretically in order to increase the understanding of heat dissipation. Despite the very practical aspects of this research, a 'generic heat transfer approach' wa

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10

Graf, Aaron John. "Active control of automotive disc bake rotor squeal using dither." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/16933.

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11

Rodriguez, Alexander John, and alex73@bigpond net au. "Experimental Analysis of Disc Thickness Variation Development in Motor Vehicle Brakes." RMIT University. Aerospace, Mechanical and Manufacturing Engineering, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20070209.123739.

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Over the past decade vehicle judder caused by Disc Thickness Variation (DTV) has become of major concern to automobile manufacturers worldwide. Judder is usually perceived by the driver as minor to severe vibrations transferred through the chassis during braking [1-9]. In this research, DTV is investigated via the use of a Smart Brake Pad (SBP). The SBP is a tool that will enable engineers to better understand the processes which occur in the harsh and confined environment that exists between the brake pad and disc whilst braking. It is also a tool that will enable engineers to

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12

Wallis, Lisa M. Mechanical &amp Manufacturing Engineering Faculty of Engineering UNSW. "A comparison of bi-directional disc brake rotor passage designs." Awarded by:University of New South Wales. School of Mechanical & Manufacturing Engineering, 2003. http://handle.unsw.edu.au/1959.4/20312.

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An important part of automobile safety is the braking system. Disc brakes have been widely used in automobiles for sped retardation for over 30 years. During that time, they have developed from a simple disc to a complex disc with channels, vanes, holes and grooves. The stopping capability of disc brakes is affected by the rate at which heat is dissipated by forced convection and the thermal capacity of the rotor. Catastrophic failure of brake rotors can occur during rapid increases or decreases in rotor temperature where regions of high temperature gradients result in high thermal strains. Th

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13

Rye, Ryan Patrick. "Investigation of disc brake squeal via sound intensity and laser vibrometry." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/19045.

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14

Wahlström, Jens. "Towards a simulation methodology for predictionof airborne wear particles from disc brakes." Licentiate thesis, KTH, Machine Design (Div.), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11044.

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<p>During braking, both the rotor and the pads in disc brakes are worn. Since disc brakes are not sealed, some of the wear particles generated can become airborne. Several studies have found an association between adverse health effects and the concentration of particles in the atmosphere, so it is of interest to improve our knowledge of the airborne wear particles generated by disc brakes. However, in field tests it is difficult to distinguish these particles from others in the surrounding environment, so it may be preferable to use laboratory test stands and/or simulation models to study the

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15

Bradley, Luke R. "Mechanical testing and modelling of carbon-carbon composites for aircraft disc brakes." Thesis, University of Bath, 2003. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426204.

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16

Wahlström, Jens. "Towards a simulation methodology for prediction of airborne wear particles from disc brakes /." Stockholm : KTH, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11044.

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17

Wahlström, Jens. "Towards a simulation methodology for prediction of airborne wear particles from disc brakes." Licentiate thesis, KTH, Maskinkonstruktion (Avd.), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11044.

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During braking, both the rotor and the pads in disc brakes are worn. Since disc brakes are not sealed, some of the wear particles generated can become airborne. Several studies have found an association between adverse health effects and the concentration of particles in the atmosphere, so it is of interest to improve our knowledge of the airborne wear particles generated by disc brakes. However, in field tests it is difficult to distinguish these particles from others in the surrounding environment, so it may be preferable to use laboratory test stands and/or simulation models to study the am

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18

Tang, Jinghan. "Finite element modelling of ventilated brake disc hot spotting." Thesis, University of Bradford, 2017. http://hdl.handle.net/10454/13340.

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Hot spotting of automotive disc brakes is an undesired thermal localisation phenomenon, which is a challenge for numerical modelling in terms of both accuracy and efficiency especially for complex disc geometry. In this research, the aim was to develop a computationally efficient finite element (FE) approach for 2-piece pin-mounted ventilated disc hot spot prediction with acceptable accuracy enabling parametric studies to contribute to the knowledge of the complex mechanisms. A time reduction strategy for the simulations was established by incorporating an axisymmetric brake pad assumption wit

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19

Loizou, Andreas, Hong Sheng Qi, and Andrew J. Day. "A numerical and experimental study on the factors that influence heat partitioning in disc brakes." Scientific Society of Mechanical Engineering (GTE), 2010. http://hdl.handle.net/10454/4413.

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yes<br>To investigate the heat partition on a vehicle disc brake, a small scale test rig with one contact interface was used. This allowed the disc/pad contact temperatures to be measured with fast-response foil thermocouples and a rubbing thermocouple. Based on the experimental conditions a 3D symmetric disc brake FE model has been created. Frictional heat generation was modelled using the ABAQUS finite element analysis software. The interface tribo-layer which affects heat partitioning was modelled using an equivalent thermal conductance value obtained from the authors¿ previous work. A 10 s

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20

Loizou, Andreas. "Modelling and simulation of themo-mechanical phenomena at the friction interface of a disc brake.An empirically-based finite element model for the fundamental investigation of factors that influence the interface thermal resistance at the friction interface of a high energy sliding pair in a disc brake." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5489.

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The fundamental theories of heat generation and transfer at the friction interface of a brake assume either matching or not matching surface temperatures by having a varying or uniform heat partition ratio respectively. In the research presented the behaviour of heat partition has been investigated in a fundamental study based on experimental measurements of temperature and the associated modelling and simulation of heat transfer in a brake friction pair. For a disc brake, an important parameter that was identified from the literature study is the interface tribo-layer (ITL), which has

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21

Zagorski, Scott Bradley. "Compatibility of ABS disc/drum brakes on class VIII vehicles with multiple trailers and their effects on jackknife stability." The Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=osu1069788894.

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22

Loizou, Andreas. "Modelling and simulation of themo-mechanical phenomena at the friction interface of a disc brake : an empirically-based finite element model for the fundamental investigation of factors that influence the interface thermal resistance at the friction interface of a high energy sliding pair in a disc brake." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5489.

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The fundamental theories of heat generation and transfer at the friction interface of a brake assume either matching or not matching surface temperatures by having a varying or uniform heat partition ratio respectively. In the research presented the behaviour of heat partition has been investigated in a fundamental study based on experimental measurements of temperature and the associated modelling and simulation of heat transfer in a brake friction pair. For a disc brake, an important parameter that was identified from the literature study is the interface tribo-layer (ITL), which has been mo

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23

Clark, Michael A. "Effect of nanoparticles on friction and wear of 2-D and 3-D carbon-carbon composite disc brakes /." Available to subscribers only, 2005. http://proquest.umi.com/pqdweb?did=1095432851&sid=8&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Thesis (M.S.)--Southern Illinois University Carbondale, 2005.<br>"Department of Mechanical Engineering and Energy Processes." Includes bibliographical references (leaves 84-86). Also available online.

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24

Zagorski, Scott Bradley. "Compatibility of ABS disc/drum brakes on class VIII vehicles with multiple trailers and their effects on jackknife stability /." Columbus, Ohio : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1069788894.

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25

Iombriller, Silvia Faria. "Análise térmica e dinâmica do sistema de freio a disco de veículos comerciais pesados." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/18/18135/tde-02022016-114612/.

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Este trabalho apresenta um procedimento para a análise dinâmica da frenagem total de emergência de um veículo de dois eixos (4x2), considerando os efeitos do aumento da temperatura no sistema de freios. Um protótipo de ônibus urbano equipado com freios a disco foi utilizado nos ensaios em perímetro urbano e em pista de teste da TRW Automotive em Limeira- SP. O sistema de freios do veículo protótipo foi instrumentado com termopares em diversos de seus componentes, com sensores de velocidade e pressão, percorrendo um perímetro típico urbano com trânsito intenso na cidade de São Paulo. Os pontos

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26

Alemani, Mattia. "Particle emissions from car brakes : The influence of contact conditions on the pad-to-rotor interface." Doctoral thesis, KTH, Tribologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-208701.

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Due to their adverse health effects emissions have been regulated for over three decades. Brake wear particulate matter is the most important non-exhaust source, however current knowledge is mainly limited to observational studies. This thesis aims to investigate relations between the brake system contact conditions and the related emissions on a model scale; validate the results on a component level; and understand to what extent they are significant on a full-scale. Paper A investigates the influence of nominal contact pressure on a model scale. Results show that higher pressure corresponds

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27

Dunn, Ashley L. "Jackknife stability of articulated tractor semitrailer vehicles with high-output brakes and jackknife detection on low coefficient surfaces." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1061328963.

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28

Hassan, Muhammad Zahir. "Thermal Deformation Analysis Disc Brake Squeal." Thesis, University of Leeds, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505054.

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29

Nilman, Jenny. "Modeling and Simulation of Brake Squeal in Disc Brake Assembly." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-68798.

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Brake squeal is an old and well-known problem in the vehicle industry and is a frequent source for customer complain. Although, brake squeal is not usually affecting the performance of the brakes, it is still important to address the problem and to predict the brakes tendency to squeal on an early stage in the design process. Brake squeal is usually defined as a sustained, high-frequency vibration of the brake components, due to the braking action. By using simulation in finite element (FE) method it should be possible to predict at what frequencies the brakes tend to emit sound. The method ch

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30

Štylárek, Milan. "Konstrukce brzdového systému formule Student." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231480.

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Objective of this thesis is design of brake system of new car Formula Student class – Dragon 3. This car was built by students of faculty of mechanical engineering on Brno university of technology. Brake parts selection is described as well as designing hydraulic brake line circuits optimized for stable braking behavior on tracks of Formula Student competitions. One of main parts of this thesis is design of front and rear custom brake discs with related parts. These parts are FEM analyzed. In the end the whole brake system fitted on Dragon 3 car is tested on track and its performance is analyz

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31

James, Simon. "An experimental study of disc brake squeal." Thesis, University of Liverpool, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399154.

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Disc brake vibrations are a cause of concern for automobile users and manufacturers. The user can find the noise of brake squeal annoying and sometimes worrying. The manufacturer suffers the immediate costs involved in vehicle warranty claims and may lose sales if a particular vehicle model develops a reputation for noise problems. The measurement of disc brake squeal and its relationship to audible and structureborne vibration measurement is difficult to determine without influencing the vibration by the measurement technique. Ideally, measurements would be taken under 'real' conditions. The

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32

Sergent, Nicolas. "Analysis and optimisation of disc brake calipers." Thesis, Cranfield University, 2010. http://dspace.lib.cranfield.ac.uk/handle/1826/10196.

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Disc brake calipers are subjected to complex mechanical loading and interaction of individual components in a typical brake assembly makes design improvement very challenging. To analyse caliper behaviour, complex Finite Element models were created and successfully validated using a variety of experimental techniques, including exceptionally suitable Digital Image Correlation. A novel methodology to optimise caliper design was developed, using non-linear contact Finite Element Analysis and topology optimisation, to generate lightweight, high performance brake calipers. The method was used on a

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33

Tao, Jiyue, and Asnaf Aziz. "Simulation of thermal stresses in a disc brake." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH. Forskningsmiljö Produktutveckling - Simulering och optimering, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-19163.

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The heat flux produced from the friction between a disc and pad system leads to a high temperature which causes thermal stresses in the disc and after a number of repeated braking cycles, cracks might be initiated. The finite element analysis (FEA) is performed to determine the temperatures profile in the disc and to analyze the stresses for the repeated braking, which could be used to calculate the fatigue life of a disc.Sequentially coupled approach is used for thermo-mechanical problem and the problem is divided into two parts, heat analysis and thermal stress analysis. The heat analysis is

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34

Bryant, David. "Thermo-elastic deformation of a vented brake disc." Thesis, University of Huddersfield, 2010. http://eprints.hud.ac.uk/id/eprint/9076/.

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The subject of retarding a moving vehicle or object in a controlled manner has been investigated over hundreds of years with many different solutions being developed over the years. As time has progressed a common overall design has almost uniformly been agreed upon for vehicle use; a brake disc and caliper or brake drum arrangement. As vehicle refinement has improved there has been increasing focus on the refinement of such designs with regards to their noise, vibration and harshness (NVH)characteristics. Whilst brake noise has had significant research analysing its cause, effect and solution

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35

Budinsky, Tomas. "Towards the active suppression of disc brake squeal." Thesis, University of Leeds, 2018. http://etheses.whiterose.ac.uk/23007/.

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This work is concerned with disc brake squeal that is widely accepted as a friction-induced self-excited vibration of the brake assembly. The present thesis aims to investigate the possibility of active disc brake squeal suppression using a method of varying the leading and trailing piston pressures in a multi-piston opposed brake caliper. This thesis describes the development of a new prototype four-piston brake caliper, a two-channel brake actuation system and an advanced control system, which is capable of varying the leading/trailing pressure ratio (LTPR) when squeal is detected. This caus

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36

Rashid, Asim. "Simulation of Thermal Stresses in a Brake Disc." Licentiate thesis, Linköpings universitet, Mekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-94345.

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In this thesis thermal stresses in a brake disc during a braking operation are simulated. The simulations are performed by using a sequential approach where the temperature history generated during a frictional heat analysis is used as an input for the stress analysis. The frictional heat analysis is based on the Eulerian method, which requires signicantly lower computational time as compared to the Lagrangian approach. The stress analysis is performed using a temperature dependent material model both with isotropic and kinematic hardening behaviors. The results predict the presence of residua

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37

Oues, Adnan Khalil. "PROTECTION OPTIMIZATION OF CARBON-CARBON COMPOSITES AGAINST AIR OXIDATION BY COATING WITH ANTI-OXIDANTS." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/dissertations/1376.

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AN ABSTRACT OF THE DISSERTATION OF TITLE: (OPTIMIZATION PROTECTION OF CARBOB-CARBON COMPOSITES DISC-BRAKES MATERIAL BY COATING WITH ANTI-OXIDANTS) Developing glass enhancer mixture solutions (Ki’s), which promote the formation of a stable glass layer, homogenous clear liquid solution, and low viscosity liquid form, are easy to apply, and penetrating. They are compatible with ceramic liquid glass based anti-oxidants for treating surfaces of carbon/carbon composites material, and significantly increase the rate of protection against oxidation. Ki’s’ are comprised of mixing chemical compositions

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38

Stenberg, Forsberg Niklas, Joakim Tänndal, and Joakim Lange. "Wear particle collector concept for a train disc brake." Thesis, KTH, Maskinkonstruktion (Inst.), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-51372.

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Vid användandet av en skivbroms på ett tåg frigörs partiklar i friktionskontakten mellan skiva och belägg. Beroende på den aerodynamiska diametern blir partiklar luftburna, och de anses vara farliga för människans andningssystem. Att fånga upp partiklarna och på så vis förbättra luftkvaliteten är därför fördelaktigt.Olika metoder för uppsamling av de luftburna partiklarna utvärderades och den mest lämpliga valdes för vidareutveckling. En konceptuell lösning, för applicering av denna metod på en Reginaboggi, genererades och utformades.Resultatet är en partikelfångare som renar luft med hjälp av

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39

Duranton, Coralie. "Fatigue analysis of two wheel‐ mounted brake disc designs." Thesis, KTH, Spårfordon, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-177313.

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Due to a need of more compact bogies, the brake discs can be mounted on the railway wheels, bolted through the wheel web. Thus, the wheels are drilled and have multiple areas of contact with the brake discs. To establish maintenance procedures that will be applied to the wheels, SNCF used the feedback from experience (as with the train AGC) which gives perfect performance in terms of safety. However, to optimize the maintenance process, numerical simulations may be preferred since they are less conservative. This report describes the numerical simulatio

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40

Fieldhouse, John David. "An analysis of disc brake noise using holographic interferometry." Thesis, University of Huddersfield, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358314.

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A predominantly experimental approach using the whole body visual technique of holographic interferometry is employed to investigate the mechanisms involved during a noisy brake application. Following the modal analysis of component parts, dynamic trials include the development of the holographic technique, making use of mirrors to permit three orthogonal views of the brake to be recorded simultaneously with smaller inset mirrors allowing for additional areas, such as the ends of the piston pad, to be observed at the same time. These dynamic experiments take the form of changing the operating

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41

Chen, J. P. "Thermo-mechanical behaviour of heavy-duty disc brake systems." Thesis, Cranfield University, 2001. http://dspace.lib.cranfield.ac.uk/handle/1826/10701.

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In heavy-duty disc brake systems, braking is a transient, non-linear and asymmetrical thermo-mechanical process. Surface cracking, rather than wear, is the major factor limiting the brake disc's life. The disc material (cast-iron), heat transfer boundary conditions and pad-disc frictional reactions are characteristically non-linear and asymmetrical during the friction process. Non-uniform deformation and surface cracks in brake discs result from the accumulation of excessive residual stress/strain. During braking processes, many factors affect the distributions of the residual stress and strai

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42

Chen, Jing Ping. "Thermo-mechanical behaviour of heavy-duty disc brake systems." Thesis, Cranfield University, 2001. http://dspace.lib.cranfield.ac.uk/handle/1826/10701.

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In heavy-duty disc brake systems, braking is a transient, non-linear and asymmetrical thermo-mechanical process. Surface cracking, rather than wear, is the major factor limiting the brake disc's life. The disc material (cast-iron), heat transfer boundary conditions and pad-disc frictional reactions are characteristically non-linear and asymmetrical during the friction process. Non-uniform deformation and surface cracks in brake discs result from the accumulation of excessive residual stress/strain. During braking processes, many factors affect the distributions of the residual stress and strai

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43

Thuppal, Vedanta Srivatsan, and Naga Vamsi Krishna Kora. "HEAT TRANSIENT TRANSFER ANALYSIS OF BRAKE DISC /PAD SYSTEM." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-13461.

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Braking is mainly controlled by the engine. Friction between a pair of pads and a rotating disc converts the kinetic energy of the vehicle into heat. High temperatures can be reached in the system which can be detrimental for both, components and passenger safety. Numerical techniques help simulate load cases and compute the temperatures field in brake disc and brake pads. The present work implements a Finite Element (FE) toolbox in Matlab/Simulink able to simulate different braking manoeuvres used for brake dimensioning mainly in the early phase of car development process. The brake pad/disc

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44

Yuen, Dick Kwan Kenneth. "Brake disc life prediction for material evaluation and selection : the application of finite element and fatigue analysis to the prediction of crack initiation in brake discs during operation." Thesis, University of Bradford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363977.

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45

Feraday, Simon Andrew. "Intelligent approaches to modelling and interpreting disc brake squeal data." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342809.

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46

Esgandari, Mohammad. "Simulation methods for vehicle disc brake noise, vibration & harshness." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/5762/.

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After decades of investigating brake noise using advanced tools and methods, brake squeal remains a major problem of the automotive industry. The Finite Element Analysis (FEA) method has long been used as a means of reliable simulation of brake noise, mainly using the Complex Eigenvalue Analysis (CEA) to predict the occurrence of instabilities resulting in brake noise. However it has been shown that CEA often over-predicts instabilities. A major improvement for CEA proposed in this study is tuning the model with an accurate level of damping. Different sources of damping are investigated and th

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47

Bakar, Abd Rahim Abu. "Modelling and simulation of disc brake contact analysis and squeal." Thesis, University of Liverpool, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422105.

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This thesis proposes a new methodology of predicting squeal using the finite element method in which three validation stages are established. A detailed 3-dimensional finite element model of a real disc brake is not only validated through modal analysis at the components and assembly levels but also through contact analysis where static contact pressure distribution and its contact area match with the experimental results. The main key issue in this research is the refinement of contact interface model of the friction material. Having assumed a smooth and flat surface (or perfect contact inter

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Hussain, Jafar. "Thermal and material characterisation of coated lightweight disc brake rotor." Thesis, University of Leeds, 2018. http://etheses.whiterose.ac.uk/21609/.

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Environmental concerns linked to CO2 emissions have placed the automotive industry under considerable pressure to reduce the carbon footprint of the vehicles that they produce. One way forward involves the use of alternative lightweight materials. The use of aluminium alloy in a brake rotor has the potential to save around 20kg in unsprung mass on a medium sized passenger car. A full scale prototype lightweight coated ventilated aluminium alloy (6082) brake rotor was manufactured to investigate the thermal performance under drag brake test conditions. The brake rotor’s rubbing surface was coat

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Mohd, Ripin Zaidi Bin. "Analysis of disc brake squeal using the finite element method." Thesis, University of Leeds, 1995. http://etheses.whiterose.ac.uk/4588/.

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The problem o f disc brake squeal has been examined by developing a finite element model of the coupled pad-disc system , conducting complex eigenvalue analysis and associating unstable modes with potential squeal problem areas. A key issue in this process is the representation of the contact pressure distribution at the frictional interface between the disc and the pad. Non-linear contact analysis using the finite element model of the pad revealed that contact is only partial at the pad-disc interface and that the contact pressure distribution depends on the friction coefficient, Young’s modu

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Serbino, Edison Marcelo. "Um estudo dos mecanismos de desgaste em disco de freio automotivo ventilado de ferro fundido cinzento perlítico com grafita lamelar." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-12052005-093850/.

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Os principais mecanismos de desgaste, presentes em discos de freio ventilados automotivos, foram determinados utilizando ensaios de bancada em dinamometro inercial. Foram medidas a temperatura, rugosidade, taxa de desgaste, tensões residuais, coeficiente de atrito e desempenho de frenagem. Foi analisado o tribocontato através de técnicas de microscopia eletrônica e ótica.<br>The main mechanims of wear, present in ventilated brake disc had been determined, when submited to the braking test in inertial dynamometric simulator. Were measured wear taxes, temperature, residual stresses, friction coe

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