Accession Number : ADA318128

Title :   Measurement of Gear Tooth Dynamic Friction.

Descriptive Note : Technical memo,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Personal Author(s) : Rebbechi, Brian ; Oswald, Fred B. ; Townsend, Dennis P.

PDF Url : ADA318128

Report Date : SEP 1996

Pagination or Media Count : 11

Abstract : Measurements of dynamic friction forces at the gear tooth contact were undertaken using strain gages at the root fillets of two successive teeth. Results are presented from two gear sets over a range of speeds and loads. The results demonstrate that the friction coefficient does not appear to be significantly influenced by the sliding reversal at the pitch point, and that the friction coefficient values found are in accord with those in general use. The friction coefficient was found to increase at low sliding speeds. This agrees with the results of disc machine testing.

Descriptors :   *SLIDING FRICTION, *GEAR TEETH, VELOCITY, LOAD DISTRIBUTION, VISCOELASTICITY, STRAIN(MECHANICS), SHEAR STRESSES, STRAIN GAGES, DYNAMIC LOADS, CALIBRATION, VISCOSITY, TRANSMISSION GEARS, TORQUE, FORCE(MECHANICS), LUBRICATING FILMS, DYNAMIC TESTS, ELECTROHYDRODYNAMICS.

Subject Categories : Machinery and Tools
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE