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oai:www.ideals.illinois.edu:2142/21425 2023-07-10 col_2142_5131 col_2142_14787 com_2142_5130 com_2142_9630 com_2142_234

Cusano, Cristino Wang, Shao 2011-05-07T13:08:17Z 2011-05-07T13:08:17Z 10000-01-01 1991 A thermal Reynolds-Eyring equation is derived to study the elastohydrodynamic lubrication of line contacts. This lubrication condition is usually found in spur gears, roller bearings and cams. The inlet region with back-flow is treated with a control volume scheme to obtain the temperature solution. A computationally-simple formulation for the stationary surface temperature is developed for simple sliding conditions. The most influential dimensionless groups are identified from the complete sets of dimensionless groups. Numerical results obtained for sliding and rolling and for simple sliding conditions are used to develop formulas for the thermal and non-Newtonian (Ree-Eyring) film thickness reduction factor. Even when thermal effects are small, these formulas can still give a film thickness reduction due to the non-Newtonian effects. Results for the maximum temperatures and traction coefficient are also presented. The pressure dependence of lubricant thermal conductivity is found to significantly affect the maximum lubricant temperature. The thermal effects on film thickness and traction are found to be more pronounced for simple sliding than for combined sliding and rolling conditions. Under simple sliding, the heat transferred to the stationary surface is found to be very small compared to that transferred to the moving surface and lubricating fluid. Made available in DSpace on 2011-05-07T13:08:17Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9211026.pdf: 5503971 bytes, checksum: b466e6910fe653c2a2252fb63eaba8c1 (MD5) Previous issue date: 1991 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:50:41Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:23:11-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9211026 (UMI)AAI9211026 http://hdl.handle.net/2142/21425 eng Copyright 1991 Wang, Shao Applied Mechanics Engineering, Mechanical Thermal non-Newtonian elastohydrodynamic lubrication of line contacts under sliding-rolling and simple sliding conditions text Mechanical Science and Engineering Mechanical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.