A Numerical Analysis for TEHL of Eccentric-Tappet Pair Subjected to Transient LoadSource: Journal of Tribology:;2003:;volume( 125 ):;issue: 004::page 770DOI: 10.1115/1.1576425Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A full numerical analysis is carried out to simulate the thermal elastohydrodynamic lubrication (TEHL) of an eccentric-tappet pair. Comparisons between thermal and isothermal results are given to reveal the role of the thermal effect. Under various eccentricities, the influences of two surfaces moving in opposite directions on pressure and film thickness profiles are analyzed and explained by the mechanism of the temperature-viscosity wedge. Pressure and film thickness profiles, the temperature and velocity distributions at zero entraining velocity are discussed fully. Particular analyses are given on the entrapped immobile surface layers that influence the velocity distribution at zero entraining velocity. Furthermore, in a working cycle, variations of central and minimum film thicknesses and frictional coefficients, under different eccentricities, are discussed.
keyword(s): Pressure , Temperature , Viscosity , Stress , Numerical analysis , Cycles , Film thickness , Wedges , Equations , Lubricants , Wheels AND Mechanisms ,
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| contributor author | J. Wang | |
| contributor author | P. Yang | |
| date accessioned | 2017-05-09T00:11:27Z | |
| date available | 2017-05-09T00:11:27Z | |
| date copyright | October, 2003 | |
| date issued | 2003 | |
| identifier issn | 0742-4787 | |
| identifier other | JOTRE9-28718#770_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/129110 | |
| description abstract | A full numerical analysis is carried out to simulate the thermal elastohydrodynamic lubrication (TEHL) of an eccentric-tappet pair. Comparisons between thermal and isothermal results are given to reveal the role of the thermal effect. Under various eccentricities, the influences of two surfaces moving in opposite directions on pressure and film thickness profiles are analyzed and explained by the mechanism of the temperature-viscosity wedge. Pressure and film thickness profiles, the temperature and velocity distributions at zero entraining velocity are discussed fully. Particular analyses are given on the entrapped immobile surface layers that influence the velocity distribution at zero entraining velocity. Furthermore, in a working cycle, variations of central and minimum film thicknesses and frictional coefficients, under different eccentricities, are discussed. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | A Numerical Analysis for TEHL of Eccentric-Tappet Pair Subjected to Transient Load | |
| type | Journal Paper | |
| journal volume | 125 | |
| journal issue | 4 | |
| journal title | Journal of Tribology | |
| identifier doi | 10.1115/1.1576425 | |
| journal fristpage | 770 | |
| journal lastpage | 779 | |
| identifier eissn | 1528-8897 | |
| keywords | Pressure | |
| keywords | Temperature | |
| keywords | Viscosity | |
| keywords | Stress | |
| keywords | Numerical analysis | |
| keywords | Cycles | |
| keywords | Film thickness | |
| keywords | Wedges | |
| keywords | Equations | |
| keywords | Lubricants | |
| keywords | Wheels AND Mechanisms | |
| tree | Journal of Tribology:;2003:;volume( 125 ):;issue: 004 | |
| contenttype | Fulltext |