RESEARCH PAPERS: Power Transmission and Gearing Papers

Life Prediction of V-Belts Related to Fatigue Mechanisms

[+] Author and Article Information
D. Fritzson

Division of Machine Elements, Chalmers University of Technology, S-412 96 Goteborg, Sweden

J. Mech., Trans., and Automation 111(3), 424-432 (Sep 01, 1989) (9 pages) doi:10.1115/1.3259015 History: Received October 01, 1988; Online November 19, 2009


Next to gear transmissions, belt transmissions are the most important mechanical transmissions. Today, belt design and development is based on extensive application tests of belts in the product development process. There is a need for theory development and design support systems. This would enable simulation for prediction and optimization of fatigue life. The aim of this work is to study certain parts of the belt in detail when the belt is running under loaded conditions. The areas of special interest are those which can be related to failure mechanisms. Thus the model can be used for calculations to predict service life. Here, the attention is focused on V-belts. Several different failure modes can be identified in V-belt fatigue. Here it is shown that the failure modes thus defined occur for such test conditions that long life can be associated with radial cracks, medium life with separation, and cord break with short life. In order to monitor the stress-strain state at any location in the belt, while simulating a running belt, “the parametric belt segment model” has been developed. Correlation with V-belt fatigue data for 11 different load cases have been made. The conclusion is that both failure mode and fatigue life can be predicted using computer simulations.

Copyright © 1989 by ASME
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