Experimental Study of Freely Alignable Journal Bearings—Part 1: Static CharacteristicsSource: Journal of Tribology:;1996:;volume( 118 ):;issue: 003::page 498DOI: 10.1115/1.2831565Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The characteristics of two misaligned journal bearings were experimentally studied. A bearing test rig was developed. The experimental journal was freely alignable in two possibly misaligned journal bearings. In Part 1, the static characteristics, such as the distributions of oil film thickness and the pressure and temperature of two misaligned bearings, are measured; the relationships of eccentricity, attitude angle, and side flow to the Sommerfeld number are experimentally determined. In Part 2, the traditional harmonic excitation method is extended to estimate the sixteen dynamic force coefficients of two misaligned journal bearings. Sixteen force coefficients of two circular journal bearings, each with two axial grooves, are estimated and the threshold stable speeds are predicted. Various experimental errors and the uncertainty of the estimated coefficients are analyzed.
keyword(s): Journal bearings , Bearings , Force , Pressure , Flow (Dynamics) , Temperature , Errors , Film thickness AND Uncertainty ,
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| contributor author | A. K. Tieu | |
| contributor author | Z. L. Qiu | |
| date accessioned | 2017-05-08T23:51:40Z | |
| date available | 2017-05-08T23:51:40Z | |
| date copyright | July, 1996 | |
| date issued | 1996 | |
| identifier issn | 0742-4787 | |
| identifier other | JOTRE9-28520#498_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/117686 | |
| description abstract | The characteristics of two misaligned journal bearings were experimentally studied. A bearing test rig was developed. The experimental journal was freely alignable in two possibly misaligned journal bearings. In Part 1, the static characteristics, such as the distributions of oil film thickness and the pressure and temperature of two misaligned bearings, are measured; the relationships of eccentricity, attitude angle, and side flow to the Sommerfeld number are experimentally determined. In Part 2, the traditional harmonic excitation method is extended to estimate the sixteen dynamic force coefficients of two misaligned journal bearings. Sixteen force coefficients of two circular journal bearings, each with two axial grooves, are estimated and the threshold stable speeds are predicted. Various experimental errors and the uncertainty of the estimated coefficients are analyzed. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Experimental Study of Freely Alignable Journal Bearings—Part 1: Static Characteristics | |
| type | Journal Paper | |
| journal volume | 118 | |
| journal issue | 3 | |
| journal title | Journal of Tribology | |
| identifier doi | 10.1115/1.2831565 | |
| journal fristpage | 498 | |
| journal lastpage | 502 | |
| identifier eissn | 1528-8897 | |
| keywords | Journal bearings | |
| keywords | Bearings | |
| keywords | Force | |
| keywords | Pressure | |
| keywords | Flow (Dynamics) | |
| keywords | Temperature | |
| keywords | Errors | |
| keywords | Film thickness AND Uncertainty | |
| tree | Journal of Tribology:;1996:;volume( 118 ):;issue: 003 | |
| contenttype | Fulltext |