Temperature and thermal stresses in a pad/disc during braking

Yevtushenko, A.A.; Kuciej, М.

doi:10.1016/j.applthermaleng.2009.09.015

Cited by 51 publications

(31 citation statements)

References 21 publications

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“…The temperature and the thermal constriction resistance as a function of geometric characters and velocity were determined. The temperature and the thermal stresses of the pad (the strip) sliding with the constant retardation on a surface of the disc (the semi-space) both during heating and after the moment of standstill were studied [6]. However these geometric configurations may correlate with actual engineering applications, absence of the exact solutions, primarily application of finite areas of frictional heating systems should be noticed.…”

Section: Introductionmentioning

confidence: 99%

Analysis of disc brake temperature distribution during single braking under non-axisymmetric load

Adamowicz

Grześ

2011

Applied Thermal Engineering

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This paper aims to study and compare the temperature distributions caused by mutual sliding of two members of the disc brake system basing on two-and three-dimensional FE modeling techniques and complexity of the phenomenon. First step of the analysis based on the previously developed model where the intensity of heat flux was assumed to be uniformly distributed on the friction surface of disc during braking process, and the heat is transferred exclusively in axial direction, whereas during the second, the three-dimensional rotor is subjected to the non-axisymmetric thermal load to simulate realistic thermal behaviour of the brake action. Operation conditions, thermo-physical properties of materials and dimensions of the brake system were adopted from the real representation of the braking process of the passenger vehicle. Arbitrarily selected four values of the velocities at the moment of brake engagement were applied to the models so as to investigate theirs influence on the obtained solutions of the temperature evolutions on the contact surface of the disc volume referring to two separated finite element analysis. The large amount of heat generated at the pad/disc interface during emergency braking indisputably evokes non-uniform temperature distributions in the domain of the rotor, whereas the pad element is constantly heated during mutual sliding. The obtained results of the original code of three-dimensional modeling technique implemented to the conventional FE software revel high agreement with the solution of simplified process of friction heating.

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Section: Introductionmentioning

confidence: 99%

Analysis of disc brake temperature distribution during single braking under non-axisymmetric load

Adamowicz

Grześ

2011

Applied Thermal Engineering

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“…One of the most challenging problems in the design of aircraft braking system is to calculate temperature and thermal stress. Analytical solution of the transient heat conduction problem of friction during the braking for the pad sliding over the infinite disc has been obtained by Yevtushenko [12]. Temperature field and thermal stresses for the friction couple metal-ceramic pad and cast-iron disc were studied.…”

Section: Design Requirements Of a Braking Systemmentioning

confidence: 99%

Evaluation of C/C-SiC Composites as Potential Candidate Materials for High Performance Braking Systems

Duryat¹

2016

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. This paper is aimed at evaluating the characteristic and performance of C/C-SiC composites as potential candidate materials for high performance braking system. A set of material specifications had been derived from specific engineering design requirements. Analysis was performed by formulating the function(s), constraint(s), and objective(s) of design and materials selection. Function of a friction material is chiefly to provide friction, absorb and dissipate energy. It is done while withstanding load and maintaining the structural adequacy and characteristic of tribology at high temperature. Objective of the material selection and design is to maximize the absorption and dissipation of energy and to minimize weight and cost. Candidate materials were evaluated based on their friction and wear, thermal capacity and conductivity, structural properties, manufacturing properties, and densities. The present paper provides a state of the art example on how materials -function -geometry -design, are all interrelated. IntroductionBraking system is one of the most important parts in mechanical design. Challenging engineering design requirements along with such other critical issues as safety, liability, health, environment, and energy, has driven the development of new friction materials. On the other hand, the discovery of friction materials, which is also pushed by science and technology, has promoted the development friction system design. The development of friction materials is strongly related to the design and applications.One of the major applications of friction materials is in transportation vehicles. Development of advanced friction materials was essentially 'pulled' by the need of aerospace and military industries that are considered as the frontiers in advanced technology. Carbon/Carbon composites, which were attributed to Brennan Forcht of Chance Vought Aircraft, were initially developed in 1958 to respond the need of US space and defense industries [1]. Carbon/Carbon composites, which were particularly developed to meet a set of material specifications dictated by specific design objectives, then had become one of the important friction materials for lightweight and high performance applications.Use of Carbon/Carbon composite materials in commercial passenger aircraft braking systems dates back to 1973 when the materials, which were provided by Dunlop, went to the first trial on VC10 aircraft before becoming a standard attachment on supersonic passenger aircraft Concorde in 1974 [1,2]. The technology, which is formerly directed to advanced applications, has been recently adopted and developed for a wider range of engineering applications. By the end of the 21th century, about 60% volume of Carbon/Carbon composites had been used in Aircraft Braking System in more than 50 types of aircrafts [1]. Recently, the materials have become the prime choice for aircrafts and other high performance braking systems involving military aircrafts, commercial aircrafts, and racing cars [1][2][3][4].

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“…Yevtushenko and Kuciej [7] investigated a transient thermal problem of three-elements (disc/pad/caliper) with time-dependent. The effects of Biot number and the duration of the pressure increasing from zero at the initial moment of time to nominal value at the moment of a stop on the values of the temperature of the cast iron disc/metal ceramic and pad/steel caliper have been studied.…”

Section: Introductionmentioning

confidence: 99%

Thermal behavior of friction clutch disc based on uniform pressure and uniform wear assumptions

Abdullah

Schlattmann

2016

Friction

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High temperatures appear in the contacting surfaces of a single-disc clutch system (friction clutch disc, flywheel and pressure plate) due to the relative motion between these parts during the sliding period. These high temperatures are responsible for several disadvantages such as increasing wear rate, surface cracks and permanent distortions. In some cases, these disadvantages may lead the contacting surfaces to failure before the expected lifetime. In this work, mathematical models of the friction clutch system (single-disc clutch) were built to find the temperature field during the sliding period (single engagement). Analysis has been completed using developed axisymmetric models to simulate the friction clutch system during the engagement. The surface temperatures are found based on uniform pressure and uniform wear assumptions.

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Temperature and thermal stresses in a pad/disc during braking

Cited by 51 publications

References 21 publications

Analysis of disc brake temperature distribution during single braking under non-axisymmetric load

Analysis of disc brake temperature distribution during single braking under non-axisymmetric load

Evaluation of C/C-SiC Composites as Potential Candidate Materials for High Performance Braking Systems

Thermal behavior of friction clutch disc based on uniform pressure and uniform wear assumptions

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