The Role of Microslip for Freely Rolling Bodies

[+] Author and Article Information
R. C. Drutowski

Research Laboratories, General Motors Corporation, Warren, Mich.

J. Basic Eng 87(3), 724-728 (Sep 01, 1965) (5 pages) doi:10.1115/1.3650660 History: Received July 08, 1964; Online November 03, 2011


The energy required to roll a sphere in a cylindrical groove is shown to be partly a hysteresis loss and partly a microslip loss. Data for three different sphere-groove combinations are separated into the two types of losses by comparison with data for toroid-plane rolling combinations chosen to give identical stress fields. The microslip loss is accounted for by the Palmgren-Heathcote equation assuming a coefficient of sliding friction of 0.073. Once the microslip torque is subtracted from the total rolling torque, the remaining torque turns out to be proportional to the load and independent of the geometry of the rolling elements, which includes various diameter spheres in addition to the combinations mentioned previously.

Copyright © 1965 by ASME
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