Analysis of Belt-Driven Mechanics Using a Creep-Rate-Dependent Friction Law

[+] Author and Article Information
M. J. Leamy

Department of Civil and Mechanical Engineering, United States Military Academy, West Point, NY 10996   e-mail: im8022@usma.edu

T. M. Wasfy

Advanced Science and Automation Corporation, 113 Derosa Drive, Hampton, VA 23666e-mail: tamer@ascience.com

J. Appl. Mech 69(6), 763-771 (Oct 31, 2002) (9 pages) doi:10.1115/1.1488663 History: Received May 30, 2001; Revised September 25, 2001; Online October 31, 2002
Copyright © 2002 by ASME
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Comparisons of analytical and finite element predicted frictional and normal forces at belt nodes for several values of the slope profile parameter vs. Results are for a discretization of 100 belt elements per half pulley. In all plots, the finite element driver solutions are represented by (_), finite element driven by ([[dotted_line]]), analytical driver by ([[dashed_line]]), and analytical driven by ([[dot_dash_line]]).
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Friction and normal forces per unit belt length for (a) driver and (b) driven pulleys. Values of vs represented: 4.0E+3 (_), 1.0E+5 ([[dotted_line]]), 8.0E+5 ([[dashed_line]]). The Coulomb law solution is represented by ([[dot_dash_line]].).
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Control volume of driven pulley in the deformed configuration
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Belt element with control volume
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Location of adhesion and slip zones on the driver and driven pulley using a Coulomb friction law
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Friction laws used in the belt-drive analysis: (a) Coulomb law, (b) creep-rate-dependent law. The three linear regions of the creep-rate law are referred to as the left-most, middle, and right-most sliding regions.




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