A Realistic Friction Test for Sheet Forming Operations

Paper #:
  • 930807

Published:
  • 1993-03-01
Citation:
Wang, W. and Wagoner, R., "A Realistic Friction Test for Sheet Forming Operations," SAE Technical Paper 930807, 1993, https://doi.org/10.4271/930807.
Pages:
10
Abstract:
A new technique for measuring the friction coefficient between the punch and workpiece during sheet forming operations has been developed at the Ohio State University. Various materials, such as interstitial-free (IF) steel, high strength (HS) steel, an aluminum alloy (2008T4) and 70/30 brass, were tested under dry and oil lubrication conditions at different punch rates and process conditions. The results show that punch friction depends on the angle of wrap, which varies with punch stroke, and on the strain rate, which depends on punch velocity. The O.S.U. Friction Test is described and typical results are presented which verify the usefulness of the new procedure.
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