Viscoplastic Behavior of a Silicone Oil in a Metalforming Inlet Zone

[+] Author and Article Information
W. R. D. Wilson, X. B. Huang

Mechanical Engineering Department, Northwestern University, Evanston, Ill. 60208

J. Tribol 111(4), 585-590 (Oct 01, 1989) (6 pages) doi:10.1115/1.3261981 History: Received March 09, 1987; Online October 29, 2009


A metalforming inlet zone analysis is developed for a viscoplastic lubricant that is Newtonian below some critical stress level at which it shears plastically. The analysis includes the effects of variations in the lubricant viscosity and shear strength with pressure, and curvature of the tooling surface. The results of the analysis are compared with experimental measurements of the lubricant film thickness in rolling chemical lead with mineral oil and silicone lubricants.

Copyright © 1989 by ASME
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