Frictionally Excited Thermoelastic Instability in Multi-Disk Clutches and Brakes

[+] Author and Article Information
P. Decuzzi, G. Monno

Dipartimento di Progettazione e Produzione Industriale, Politecnico di Bari, V. Japigia 182, 70126 Bari, Italy

M. Ciaverella

CNR-IRIS (Consiglio Nazionale delle Ricerche), Computational Mechanics of Solids (COMES), Str. Crocefisso 2/B, 70125 Basri, Italy

J. Tribol 123(4), 865-871 (Dec 07, 2000) (7 pages) doi:10.1115/1.1352740 History: Received April 06, 2000; Revised December 07, 2000
Copyright © 2001 by ASME
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An infinite pack of friction (1) and metal (2) layers sliding with a relative speed V
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The effect of the thickness ratio a1/a2 on the relationship between critical speed V and wave number m, for the dominant mode sym1−asym2
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The effect of the thickness ratio a2/a1 on the minimum critical speed V (solid line) and the wave number m (dashed line)
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The effect of the thickness ratio a1/a2 on the migration c2 speed of the good conducting layer
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Geometry and dimensions of a typical multi-disk clutch (all dimensions are expressed in mm)
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The relation between the critical rotational speed—with the number of hot spots N, for different radial thickness ratio w/R of the disks. The two-dimensional solution is obtained for a thickness ratio a1/a2=0.5.




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