A Study of Heat Transfer on Front and Back Vented Brake Disc Effect on Vibration

Lakkam, Supachai; Puangcharoenchai, Phupoom; Suwantaroj, Kullayot

doi:10.4186/ej.2017.21.1.169

Cited by 7 publications

(10 citation statements)

References 14 publications

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“…This physical action of the brake disc/drum causes heat conduction to the adjacent braking system components, as referred to in Ref. [1]. Kumar and Vinodh [2] used the finite element method for both static structural and transient thermal analysis while proposing a new automotive brake rotor design and compared it with a ventilated disc brake rotor.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Structural and contact analysis of a three-dimensional disc-pad model with and without thermal effects

et al. 2015

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Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Structural and contact analysis of a three-dimensional disc-pad model with and without thermal effects

et al. 2015

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“…Thus, there is a correspondence with the theories related to heat transfer. According to Lakkam et al [40], a surface temperature of at least 300 • C on the disc brake increases with the pressure applied during the braking process at a speed of 80 Km/h, and changes with the operational conditions of the automobile such as weight, speed, tire and roadway conditions.…”

Section: Mathematical Results Of Heat Transfermentioning

confidence: 99%

“…The calculations developed at 80 km/h do not generate enough heat on the braking area for the radiation to act. This also depends on the material properties of the disc brake [39,40].…”

Section: Mathematical Calculationsmentioning

confidence: 99%

“…It was around 30% lower compared to the solid disc. Lakkam et al [18] investigated the temperature gradient of the disc brake to evaluate the heat convection coefficients (h) through experimental and numerical tests. The value of h was modified by changing the temperature distribution in disc brakes under steady-state forced heat convection.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Study of Heat Transfer and Speed Air Flow on Performance of an Auto-Ventilated Disc Brake

León

García

Camperos

2021

Fluids

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In the braking system, the heat dissipation generated by the friction between the disc and pad should be evacuated as quickly as possible. In this work, five common different automotive disc brakes were studied through mathematical theories of heat transfer and numerical methods using the ANSYS software. In addition, a direct comparison between experimental, theoretical, and simulation values found in the open literature was performed to propose a disc brake with an improved geometry in terms of dissipation of heat transfer. The numerical results were considered to propose two possible solutions of disc brake geometries using N-38 ventilation blades used in aeronautic engineering. An improvement in temperature dissipation was achieved by approximately 23.8% compared to the five geometries analyzed with a simple type N-38 ventilation blade. The heat dissipation in the brakes strongly depends on the geometry of the disc, the geometry of the blades, the material from which it is manufactured, the material of the pad, the weight of the vehicle, and the operating conditions, as can be verified with mathematical calculations and experiments. The results obtained demonstrate that the discs can be used effectively in extreme working conditions (80 km/h and 33°C), without affecting the safety of the occupants and the braking system.

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“…É possível computar a queda de pressão do canal escrevendo o balanço de energia. Em seguida partiremos primeiramente para a análise teórica da convecção forçada, [4] temos que nosso disco em estudo é um "front-vented disc brake", conforme a figura abaixo [30]: Outros parâmetros importantes a serem reescritos são a distribuição de frenagem na dianteira ( ) que é de 70% e o fator de dissipação de calor no disco de freio ( ) adotado é…”

Section: Análise Teórica Térmicaunclassified

Dinâmica De Frenagem E Análise Térmica De Freio a Disco Ventilado Automotivo

SILVA¹

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AGRADECIMENTOSPrimeiramente, agradeço a Deus, por me permitir a vida. A minha família, que sempre me apoiou em todas as minhas iniciativas e acreditou no meu potencial desde os meus primórdios acadêmicos. Minha mãe, meu pai e meu irmão tiveram um papel fundamental na concretização deste momento tão importante para nós e, sinceramente, não acredito que palavras seriam suficientes para demonstrar a minha gratidão.Agradeço em especial ao meu orientador Jaime Tupiassú e ao coorientador Ricardo Neto por terem me dado esta oportunidade de projeto com os mesmos, além de todo o tempo, paciência e cooperação.Agradecimentos à PUC e ao corpo docente do departamento de engenharia mecânica por me mostrar a arte da engenharia e colaborar na minha formação acadêmica.Além dos citados previamente, devo agradecer de coração à todos os meus amigos e amigas envolvidas neste período de conclusão de curso, pois os mesmos me incentivaram, ajudaram e estudaram comigo assuntos importantes para o progresso deste projeto de fim de curso. Graças a eles, alavanquei minha capacidade de aprendizado e obtive resultados acima do esperado além de conciliar o estágio e o curso de engenharia mecânica que não é fácil.Por último, mas não menos importante, gostaria de agradecer a todas as pessoas que, de alguma maneira, me influenciaram e auxiliaram a chegar nesse momento tão especial. Sei que devo a todos e espero, com toda a sinceridade, ter a oportunidade de um dia retribuí-los.ii RESUMO Este projeto consiste em desenvolver uma dinâmica veicular e análise térmica dos freios automotivos que são utilizados atualmente no mercado. O objetivo é poder ter uma noção geral de como se começa um projeto de freio a disco automotivo tanto com a análise mecânica quanto térmica dentro dos parâmetros encontrados nos livros e artigos científicos de engenharia.Também será estudado assuntos importantes de frenagem, além de seus variados tipos de mecanismos já desenvolvidos assim como materiais, distância de frenagem outros assuntos interessantes que acercam este assunto além da utilização da ferramenta CAD Solidworks.Palavras-chave: Freio a Disco, Materiais, Análise Térmica, Dinâmica de Frenagem, Solidworks.iii ABSTRACT This project consists of developing a vehicle dynamics and thermal analysis of the automotive brakes that are currently used in the market. The objective is to be able to have a general notion of how to start an automotive disc brake design with both mechanical and thermal analysis within the parameters found in books and scientific engineering articles.It will also be studied important braking issues, in addition to its various types of mechanisms already developed as well as materials, braking distance other interesting subjects that approach this subject beyond the use of CAD Solidworks tool.

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A Study of Heat Transfer on Front and Back Vented Brake Disc Effect on Vibration

Cited by 7 publications

References 14 publications

RETRACTED ARTICLE: Structural and contact analysis of a three-dimensional disc-pad model with and without thermal effects

RETRACTED ARTICLE: Structural and contact analysis of a three-dimensional disc-pad model with and without thermal effects

Numerical Study of Heat Transfer and Speed Air Flow on Performance of an Auto-Ventilated Disc Brake

Dinâmica De Frenagem E Análise Térmica De Freio a Disco Ventilado Automotivo

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