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New generalized rheological model for lubrication of a ball spinning in a nonconforming groove
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Zaretsky, E. V. Allen, C. W. Townsend, D. P. |
| Copyright Year | 1973 |
| Description | The elastohydrodynamic theory for predicting the spinning friction of a ball in a nonconforming groove was modified to incorporate a rheological model. The rheological model is based on the exponential pressure viscosity relation for low shear stresses, but at high shear rates and pressures, the relation is altered to one in which the shear stress is porportional to the normal stress. The model was fitted to experimental spinning torques for four different lubricants: a synthetic paraffinic lubricant, di-2-ethylhexyl sebacate, a super-refined naphthenic mineral oil, and a polyphenyl ether (5P4E). Good agreement between the model and experiment was found. |
| File Size | 1401418 |
| Page Count | 23 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730015787 |
| Archival Resource Key | ark:/13960/t0cv98m6h |
| Language | English |
| Publisher Date | 1973-05-01 |
| Access Restriction | Open |
| Subject Keyword | Machine Elements And Processes Elastohydrodynamics Lubricants Spin Rheology Models Balls Plastics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
