Mechanical interactions of rough surfaces. Quarterly progress report, December 31, 1984-March 31, 1985
Full film traction test results obtained at various loads and speeds with two oils, two test elements (a ball and roller) and with and without lateral sliding, are presented and discussed. Lubricant properties deduced from the tests performed without lateral sliding were used with the Tevaarwerk-Johnson fluid traction model incorporated within program TRIBOS, to predict the corresponding traction coefficient and traction curve slope in the presence of lateral sliding. Tests designed to infer the asperity Coulomb friction coefficient in the partial film or mixed EHD region are described. Surface roughness parameters obtained by digital processing of the multiple traces made on these disks used in the mixed traction tests are summarized. The criteria that these parameters must satisfy for internal consistency and hence for proper functioning within a microcontact model are derived. Modifications to computer program SKARESIM are described. Methodology for estimating the value of the mean square profile curvature m/sub 4/ using the output of a conventional stylus profile instrument is evaluated. Predicted and directly measured values of m/sub 4/ are compared and shown to be consistent within sampling error. A procedure is described for assessing via SKARESIM, a criterion which alleges that stylus profile fidelity is acceptable when m/sub 4/ does not exceed the inverse of the square of the profile radius.
- Research Organization:
- SKF Industries, Inc., King of Prussia, PA (USA)
- DOE Contract Number:
- AC02-84ER13163
- OSTI ID:
- 5669263
- Report Number(s):
- DOE/ER/13163-6; ON: DE85010390
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mechanical interactions of rough surfaces. Quarterly progress report, April 1-June 30, 1986
Mechanical interactions of rough surfaces. Quarterly progress report, June 30, 1985-September 30, 1985
Related Subjects
SURFACES
FRICTION FACTOR
ROUGHNESS
COMPUTERIZED SIMULATION
LUBRICATING OILS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
SLIDING FRICTION
STRESSES
VELOCITY
FRICTION
LUBRICANTS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
SIMULATION
SURFACE PROPERTIES
420500* - Engineering- Materials Testing