Fatigue Damage Prediction in Synchronous Belts

[+] Author and Article Information
H. Iizuka

Department of Mechanical Engineering, Yamagata University, 992-8510 Yonezawa, Japan

G. Gerbert

Machine and Vehicle Design, Chalmers University of Technology, S-412 96 Göteborg, Sweden

T. H. C. Childs

Department of Mechanical Engineering, University of Leeds, Leeds LS2 9JT, U.K.

J. Mech. Des 121(2), 280-288 (Jun 01, 1999) (9 pages) doi:10.1115/1.2829455 History: Received October 01, 1996; Revised February 01, 1999; Online December 11, 2007


The mechanics of cords is analyzed under simple bending to understand the fatigue failure mechanism of synchronous belts. A simplified beam model of synchronous belt bending is then proposed to calculate the amount of curvature under conditions of torque transmission. Especially the effect of friction force at the working flank is taken into account to explain the difference of damage accumulation between the driving-entry and driven-exit partial meshings. Finally, fatigue life prediction is carried out based on the calculated curvature under driving-contact and driven-contact fatigue failure conditions.

Copyright © 1999 by The American Society of Mechanical Engineers
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