NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Elastic model of the traction behavior of two traction lubricantsIn the analysis of rolling-sliding concentrated contacts, such as gears, bearings and traction drives, the traction characteristics of the lubricant are of prime importance. The elastic shear modulus and limiting shear stress properties of the lubricant dictate the traction/slip characteristics and power loss associated with an EHD contact undergoing slip and/or spin. These properties can be deducted directly from the initial slope m and maximum traction coefficient micron of an experimental traction curve. In this investigation, correlation equations are presented to predict m and micron for two modern traction fluids based on the regression analysis of 334 separate traction disk machine experiments. The effects of contact pressure, temperature, surface velocity, ellipticity ratio are examined. Problems in deducing lubricant shear moduli from disk machine tests are discussed. Previously announced in STAR as N83-20116
Document ID
19840046004
Document Type
Reprint (Version printed in journal)
Authors
Loewenthal, S. H. (NASA Lewis Research Center Cleveland, OH, United States)
Rohn, D. A. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1984
Publication Information
Publication: ASLE Transactions
Volume: 27
Subject Category
MECHANICAL ENGINEERING
Distribution Limits
Public
Copyright
Other