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A new evaluation to friction analysis for the ring test

โœ Scribed by Jang-Ping Wang

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
320 KB
Volume
41
Category
Article
ISSN
0890-6955

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โœฆ Synopsis

A non-constant shear friction approach is proposed to evaluate the friction in ring test. The distribution of shear friction is derived and found to be dependent on the ratio (called F-coefficient) of the second derivative and first derivative of velocity at the z-direction. An upper bound method combined with the F-coefficient is used to simulate the processes of ring test. The calibration curves are reconstructed according to the F-coefficient and show good agreement compared with the literature. A relation between the Fcoefficient, neutral line and constant friction factor m are also shown for discussion.

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