The frictional heat generated during braking causes thermoelastic distortion that modifies the contact pressure distribution. If the sliding speed is sufficiently high, this can lead to frictionally-excited thermoelastic instability (TEI), charaterized by major non-uniformities in pressure and temperature. In automotive applications, a particular area of concern is the relation between thermoelastically induced hot spots in the brake disks and noise and vibration in the brake system. Numerical implementation of burton's perturbation analysis for thermoelastic instability in a two-dimensional model provides an extremely efficient method for determinig the critical speed in simple sliding systems. In this paper, the two-dimensional model has been extended to an annular three-dimensional disk model in order to consider more realistic brake and clutch geometries and to provide more accurate critical speed. The results show that the eigenmodes exhibit focal hot spots along the circumference on each side of the disk and the thin disk is more stable than the thick disk when both disk thicknesses are below the optimal thickness.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Finite element analysis of frictionally-excited thermoelastic instability in 3D annular disk


    Additional title:

    Dreidimensionale Finite-Elemente-Analyse von reibungsinduzierter thermoelastischer Instabilität


    Contributors:
    Du, S. (author) / Fash, J.W. (author)

    Published in:

    Publication date :

    2000


    Size :

    15 Seiten, 12 Bilder, 1 Tabelle, 8 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





    Finite element analysis of frictionally-excited thermoelastic instability in 3D annular disk

    Du,S. / Fash,J.W. / Borg Warner Automotive,US et al. | Automotive engineering | 2000


    Finite element analysis of frictionally excited thermoelastic instability

    Du, Shuqin / Zagrodzki, P. / Barber, J.R. et al. | Tema Archive | 1997


    Effect of Wear on Frictionally Excited Thermoelastic Instability

    Qiao, Yijun / Yi, Yun-Bo | British Library Conference Proceedings | 2020


    Effect of Wear on Frictionally Excited Thermoelastic Instability

    Qiao, Yijun / Yi, Yun-Bo | British Library Conference Proceedings | 2020