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RESEARCH PAPERS

Hydrodynamic Lubrication in Simple Stretch Forming Processes

[+] Author and Article Information
W. R. D. Wilson

Mechanical and Nuclear Engineering Department, Northwestern University, Evanston, Ill. 60201

J. J. Wang

Mechanical Engineering Department, University of Massachusetts, Amherst, Mass. 01003

J. Tribol 106(1), 70-77 (Jan 01, 1984) (8 pages) doi:10.1115/1.3260870 History: Received May 03, 1982; Online October 29, 2009

Abstract

Theoretical models for the hydrodynamic lubrication of plane strain and axisymmetric sheet metal stretch forming processes with cylindrical and spherical headed punches, respectively, are developed. The lubricant is treated as an isoviscous Newtonian liquid for both geometries. In addition, the influence of sheet heating due to plastic deformation with an exponential variation of viscosity with temperature is analyzed for the plane strain case.

Copyright © 1984 by ASME
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