A dynamic model for brake pedal feel analysis in passenger cars

Meng, Dejian; Zhang, Lijun; Yu, Zhuoping

doi:10.1177/0954407015598030

Cited by 25 publications

(15 citation statements)

References 28 publications

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“…Moreover, researchers at the Universita degli Studi di Roma, took into account the influence of velocity with respect to friction in the brake system also included a static coefficient applying different kinetic traditional numerical methods (Andreaus & Casini, 2001;Shaw, 1986). Meng, Zhang, & Yu (2016) considered as main component of the brake system the pedal for the study of the conditions in dynamic calculations. Where they obtained mathematical results in static and dynamic conditions of the system to predict their behavior.…”

Section: García-león and Flórez-solanomentioning

confidence: 99%

Dynamic analysis of three autoventilated disc brakes

León¹,

Flórez-Solano²

2017

Ing. Inv.

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The braking system of a car must meet several requirements, among which safety is the most important. It is also composed of a set of mechanical parts such as springs, different types of materials (Metallic and Non Metallic), gases and liquids. The brakes must work safely and predictably in all circumstances, which means having a stable level of friction, in any condition of temperature, humidity and salinity of the environment. For a correct design and operation of brake discs, it is necessary to consider different aspects, such as geometry, type of material, mechanical strength, maximum temperature, thermal deformation, cracking resistance, among others. Therefore, the main objective of this work is to analyze the dynamics and kinetics of the brake system from the pedal as the beginning of mathematical calculations to simulate the behavior and Analysis of Finite Elements (FEA), with the help of SolidWorks Simulation Software. The results show that the third brake disc works best in relation to the other two discs in their different working conditions such as speed and displacement in braking, concluding that depending on the geometry of the brake and the cooling channels these systems can be optimized that are of great importance for the automotive industry.Keywords: Dynamics, friction, FEA, CFD, disc brakes, automobile. RESUMENEl sistema de frenado de un automóvil debe satisfacer varios requerimientos, entre los cuales, la seguridad es el más importante. Además, está compuesto por un conjunto de piezas mecánicas tales como: resortes, diferentes tipos de materiales (Metálicos y No Metálicos), gases y líquidos. Los frenos deben trabajar en forma segura y predecible en cualquier circunstancia, lo cual implica disponer de un nivel estable de fricción en cualquier condición de temperatura, humedad y salinidad del medio ambiente. Para un correcto diseño y operación de los discos de freno, es necesario considerar diferentes aspectos, tales como la geometría, el tipo de material, la resistencia mecánica, la temperatura máxima, la deformación térmica, la resistencia al agrietamiento, entre otros. Por lo anterior, el principal objetivo de este trabajo es analizar la dinámica y la cinética del sistema de freno a partir del pedal como inicio de los cálculos matemáticos para simular el comportamiento en mediante el Análisis de Elementos Finitos (FEA), con la ayuda del Software SolidWorks Simulation. Los resultados demuestran que el disco de freno número tres funciona mejor con relación a los otros dos discos en sus diferentes condiciones de trabajo, como lo son velocidad y desplazamiento en frenado. Así, se concluye que dependiendo de la geometría del freno y de los canales de refrigeración, se pueden optimizar estos sistemas de gran importancia para la industria automotriz.

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Section: García-león and Flórez-solanomentioning

confidence: 99%

Dynamic analysis of three autoventilated disc brakes

León¹,

Flórez-Solano²

2017

Ing. Inv.

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“…En la investigación realizada por [21], consideraron como componente principal del sistema de frenos al pedal con el fin de estudiar las condiciones en cálculos dinámicos. Se obtuvieron resultados matemáticos en condiciones estáticas y dinámicas del sistema para predecir su comportamiento.…”

Section: Introductionunclassified

Análisis termodinámico de un disco de freno automotriz con pilares de ventilación tipo NACA 66-209

2018

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ResumenIntroducción− El sistema de frenado de un automóvil debe trabajar de forma segura y predecible en cualquier circunstancia, lo cual implica disponer de un nivel estable de fricción en cualquier condición de temperatura, humedad y salinidad del medio ambiente. Para un correcto diseño y operación de los discos de freno, es necesario considerar diferentes aspectos, tales como: la geometría, el tipo de material, la resistencia mecánica, la temperatura máxima, la deformación térmica, la resistencia al agrietamiento, entre otros. Objetivo− En el presente trabajo se realizó el análisis del sistema de freno a partir del pedal como inicio de los cálculos de cinética y dinámica de los elementos constitutivos, y, de esta manera, simular el comportamiento de un freno automotriz con pilares de ventilación tipo NACA 66-209. Metodología− El desarrollo de la investigación se llevó a cabo mediante la ejecución de un Análisis de Elementos Finitos (FEA) con la ayuda del programa de computador SolidWorks Simulation, con el que se llevó a cabo el modelo geométrico del disco para identificar los elementos sometidos a máximas variaciones de temperatura. Resultados− Con los resultados numéricos obtenidos se demuestra que, con los cálculos matemáticos, se logró validar el correcto funcionamiento de sistema de frenado en diferentes condiciones de operación, optimizando el tipo de geometría de los discos y ayudando así a la evacuación más rápida de calor con respecto a otros tipos de frenos de disco. Conclusiones− Estos sistemas trabajan en condiciones óptimas, es decir, velocidad de 80 Km/h y en un medio ambiente de 22 °C, generando una temperatura de frenado de 60,5 °C. Estos valores garantizan altos niveles de seguridad y operación en comparación con otros tipos de geometrías, además de poder determinar sus condiciones de funcionamiento en diferentes condiciones de trabajo. AbstractIntroduction− The braking system of a car must work safely and predictably under any circumstance. This implies having a stable level of friction in any condition of temperature, humidity and salinity of the environment. For a correct design and operation of the brake discs, it is necessary to consider different aspects, such as geometry, type of material, mechanical resistance, maximum temperature, thermal deformation, resistance to cracking, among others. Objective− In the present work, the analysis of the brake system from the pedal was carried out as the beginning of the kinetic and dynamic calculations of the constituent elements and, in this way, simulate the behavior of an automotive brake with NACA 66-209. Methodology− The development of the investigation was carried out by means of the execution of a Finite Element Analysis (FEA) with the help of the SolidWorks Simulation Software. The geometric model of the disk was carried out in order to identify the elements submitted to maximum temperature variations. Results− The results correspond to the numerical results of the tests that were carried out, in this case, optimizing the disc geometry type...

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“…Furthermore, Meng;Zhang & Yu (2016) considered the pedal as amajor component of the braking system to study dynamical calculation conditions. Through this study, mathematical findings under static and dynamic conditions of systems were used to predict their performance.…”

Section: Dynamic Systemmentioning

confidence: 99%

Brake Discs: A Technological Review From Its Analysis and Assessment

León

Flórez-Solano

Suárez-Quiñones

2019

Inf.Tec

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Braking systems are undoubtedly the most important component for road safety, since it determines the total or partial stop of a vehicle and, therefore, guarantees the physical integrity of passengers. Normally, the front brake discs and the remaining percentage absorb 70% of the kinetic energy produced within a vehicle by the rear brake discs, which tend to have the form of a drum brake. These systems benefit from friction to stop a moving vehicle, under the umbrella of hydraulic pressure that pushes the brake pads against the iron-cast disk. In this document, concepts of famous authors around the world on analysis and evaluation of brake discs are provided, which are carried out using a descriptive methodology and an estimation of the characteristics of the brake disc. The review is carried out in computer assisted design through several existing CAD software in the industry, as the main methodology applied to the development of certain research projects, where different geometric characteristics of the brake discs are considered, as well as problems related to wear and corrosion. This research project has shown that it is vital to incorporate existing computer assisted design software to predict performance, improve components and optimize the functionality of the brake system. In this way, road traffic safety and systems efficiency are achieved, which are a matter of great importance for the industry. It is vital to analyze brake systems through Finite Element Analysis (FEA), with the intention of achieving a broader vision of its performance, since the information collected reveals that the geometric characteristics of the brake and cooling ducts influence the heat dissipation. It depends on the form, the type of material and the application, the heat generated between the pad and the brake. Therefore, the heat is dissipated rapidly according to the analysis performed mathematically by the researchers, which are compared with the made in computer assisted design software.

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A dynamic model for brake pedal feel analysis in passenger cars

Cited by 25 publications

References 28 publications

Dynamic analysis of three autoventilated disc brakes

Dynamic analysis of three autoventilated disc brakes

Análisis termodinámico de un disco de freno automotriz con pilares de ventilación tipo NACA 66-209

Brake Discs: A Technological Review From Its Analysis and Assessment

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