An Experimental Investigation of Frictionally-Excited Thermoelastic Instability in Automotive Disk Brakes Under a Drag Brake Application
نویسندگان
چکیده
منابع مشابه
An Experimental Investigation of Frictionally-Excited Thermoelastic Instability in Automotive Disk Brakes Under a Drag Brake Application
Thermoelastic instability in an automotive disk brake system is investigated experimentally under drag braking conditions. The onset of instability is clearly identifiable through the observation of nonuniformities in temperature measured using embedded thermocouples. A stability boundary is established in temperature/speed space, the critical temperature being attributable to temperature-depen...
متن کاملFrictionally Excited Thermoelastic Instability in Automotive Disk Brakes
Thermoelastic instability in automotive disk brake systems is investigated focusing on the effect of a finite disk thickness. A finite layer model with an antisymmetric mode of deformation can estimate the onset of instability observed in actual disk brake systems. Also some effects of system parameters on stability are found to agree well to experimental observations. 1 Introduction Dow and Bu...
متن کاملThe effect of shear tractions on frictionally-excited thermoelastic instability
A parametric study is conducted to determine the effect of normal displacements due to shear tractions on the critical speed for frictionally-excited thermoelastic instability. The results show that shear effects can be very significant when the materials have comparable thermal properties and their neglect can lead to a non-conservative overestimate of critical speed. ft is also found that the...
متن کاملBraking Process in Automobiles: Investigation of the Thermoelastic Instability Phenomenon
During the braking action, the kinetic energy produced at the wheel is transformed into heat energy, which doesn’t dissipate fast enough into the air stream from the brake to the brake disk; as a result, the thermal conductivity plays a critical role in handling such heat generated. Thermal judder, which is a result of non-uniform contact cycles between the pad and the disk brake rotor, which i...
متن کاملRobust Control of an Automotive Electromechanical Brake
This paper presents a robust H∞ optimal control design for an automotive electromechanical brake (EMB). The design considers parametric uncertainty, unmodelled dynamics and the need for robust stability and performance. The capacity of a robust EMB control to manage uncertainty and performance is assessed and experimental and simulation results are presented. The tradeoffs involved in meeting a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Tribology
سال: 1994
ISSN: 0742-4787,1528-8897
DOI: 10.1115/1.2928855