Analysis of Surface Tractions in Complex Fretting Fatigue Cycles Using Quadratic Programming

[+] Author and Article Information
D. Nowell, D. N. Dai

Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, U.K.

J. Tribol 120(4), 744-749 (Oct 01, 1998) (6 pages) doi:10.1115/1.2833774 History: Received September 20, 1997; Revised January 20, 1998; Online January 24, 2008


Real fretting fatigue cycles often involve complex loading where the fretting force may vary with a different phase or frequency to the other loads on the components. Analysis of the contact tractions in such cases can be difficult. Here we present a quadratic programming technique which enables the shear tractions to be determined in a relatively straightforward manner. A number of sample load histories are investigated and it is shown that the shear traction cycle rapidly shakes down to a steady state. Further, the results are relatively insensitive to the manner in which loading is commenced.

Copyright © 1998 by The American Society of Mechanical Engineers
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