Properties of stability, bifurcation, and chaos of the tangential motion disk brake

Wei, Daogao; Ruan, Jingyu; Zhu, Wei; Kang, Zuheng

doi:10.1016/j.jsv.2016.04.022

Cited by 42 publications

(26 citation statements)

References 25 publications

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“…At the moment several investigators took into account the numerical simulations to determine the phenomena of the vibration in the braking systems in order to observe the behavior of the angular velocity and the behaviors (D. Wei, Ruan, Zhu, & Kang, 2016). Therefore, the bounce of vehicle body and the variation of the braking distance has an impact on the performance and safety braking.…”

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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“…Actualmente, investigadores de la University of Technology Sydney simularon, en un banco de pruebas, el comportamiento del disco de freno para obtener el beneficio económico y dinámico en el rendimiento del sistema, con lo que se comprobó la eficiencia del sistema en diferentes condiciones de operación [14] [15]. Asimismo, se obtuvieron perfiles de frenado mediante el modelado y análisis numéricos de los componentes del sistema con la finalidad de predecir su comportamiento en diferentes usos a los que puede ser sometido, teniendo en cuenta los resultados del análisis de elementos finitos (FEA) para validar los resultados [16].…”

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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“…Experimentally, researchers have studied varied creep groan phenomena and the effects of structural parameters on creep groan, such as sliding stick-slip [7,12,14], torsional stick-slip of torque [15], tangential or torsional stiffness [9,10], and variations of caliper, suspension, chassis, and drivelines [12,13]. e tribological parameters of pad-disc interface are also characterized in terms of varied friction models such as LuGre and the bristle friction law in addition to the Coulomb and Stribeck model with varied slopes, magnitudes, and gap of static and dynamic friction coefficients [16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…In general, all suspension-type modes could exhibit resonances in the creep groan range. By considering the components of the brake and driveline, and even the tire and vehicle mass, three, four, five, and seven-DOFs models have been used to investigate varied aspects of brake friction vibrations [20][21][22][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Sensing and Quantifying a New Mechanism for Vehicle Brake Creep Groan

Meng

Zhang

et al. 2019

Shock and Vibration

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This paper investigates the creep groan of a vehicle’s brake experimentally, analytically, and numerically. Experimentally, the effects of acceleration on caliper and strut, noise, brake pressure, and tension are measured. The results show that the measured signals and their relevant spectra broadly capture the complex vibrations of creep groan. This includes the simple stick-slip, severe stick-slip vibrations/resonances, multiple harmonics, half-order harmonics; stick-slip-induced impulsive vibrations, steady/unstable vibrations, and their transitions. Analytically, a new mathematical model is presented to capture the unique features of half-order harmonics and the connections to fundamental stick-slip/resonant frequency and multiple harmonics. The analytical solution and the experimental results show that the vibro-impact of the brake pad-disc system can be triggered by severe stick-slip vibrations and is associated with instable, impulsive stick-slip vibration with wideband. The induced stick-slip vibro-impact can evolve into a steady and strong state with half-order, stick-slip fundamental, and multiple-order components. This new mechanism is different from all previously proposed mechanisms of creep groan in that we also view some type of creep groan as a stick-slip vibration-induced vibro-impact phenomenon in addition to conventional stick-slip phenomena. The new mechanism comprehensively explains the complex experimental phenomena reported in the literature. Numerically, the salient features of phase diagrams of instable stick-slip and vibro-impact are examined by using a seven-degree-of-freedom brake system model, which shows that the phase diagrams of the dynamics of creep groan with and without vibro-impact are substantially different. The phase diagram of the dynamics with vibro-impact is closer to the experimental results. In contrast to existing mechanisms, the proposed new mechanism encompasses the instable stick-slip nature of creep groan and elaborates the inherent connections and transition of the spectrogram. The new knowledge can be used to attain critical improvements to brake noise and vibration analysis and design. By applying the proposed new model in addition to existing models, all experimental phenomena in creep groan are elaborated and quantified.

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Properties of stability, bifurcation, and chaos of the tangential motion disk brake

Cited by 42 publications

References 25 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

Sensing and Quantifying a New Mechanism for Vehicle Brake Creep Groan

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