Mechanical interactions of rough surfaces. Quarterly progress report, April 1-June 30, 1986
Simulation studies have been performed to yield the complete distribution of asperity contact area, load and pressure as a function of the separation of rough surfaces. Microcontact models ordinarily yield just the average value of these quantities with no measure of the scatter about the average. The low sliding speed microcontact flash temperature distribution is shown to be computable as a by product of the determination of the microcontact area distribution. A coulomb friction model for traction in the mixed film regime is tested against published data. The required coulomb friction coefficient is found to be unreasonably large. A suggested explanation is that only contacts larger than some critical minimum can cause loss of electrical insulation between sliding disks. Preliminary ceramic microfracture experiments have resulted in plastic deformation rather than fracture at asperity tips.
- Research Organization:
- SKF Industries, Inc., King of Prussia, PA (USA)
- DOE Contract Number:
- AC02-84ER13163
- OSTI ID:
- 5629012
- Report Number(s):
- DOE/ER/13163-11; ON: DE86010886
- Country of Publication:
- United States
- Language:
- English
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