Analysis of Thermal Effects in the Yield Phase of Hydrodynamic Lubricant Film in Plane Strain Forging

[+] Author and Article Information
V. K. Bhatt

Mechanical Engineering Department, Bundelkhand Institute of Engineering & Technology, Jhansi (U.P.) 284001, India

D. K. Sengupta

Mechanical Engineering Department, M. N. R. Engineering College, Allahabad (U.P.) 211004, India

J. Tribol 118(4), 880-885 (Oct 01, 1996) (6 pages) doi:10.1115/1.2831622 History: Received July 14, 1994; Revised August 25, 1995; Online January 24, 2008


A thermal Reynolds equation, which takes into account viscosity variation across the lubricant film thickness due to shear energy dissipation within the film, has been developed. It also takes into account the effect of conduction and convection on heat transfer in the lubricant film. It indicates that the pressure gradients developed in a no-slip lubricated contact are increased with an increase in Peclet number. The use of the equation is illustrated by applying it in the film formation process in the yield phase of liquid lubricated plane strain forging. The analysis indicates that the Peclet number plays a dominant role infixing the lubricant film thickness in such contacts.

Copyright © 1996 by The American Society of Mechanical Engineers
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