| An Unsteady Long Bearing Squeeze Film Damper Model, Part 1: Circular Centered Orbits Contributor(s): Schallhorn, P. a. (Author), Nasa Technical Reports Server (Ntrs) (Created by), Et Al (Created by) |
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ISBN: 1289290415 ISBN-13: 9781289290412 Publisher: Bibliogov OUR PRICE: $14.96 Product Type: Paperback - Other Formats Published: August 2013 |
| Additional Information |
| BISAC Categories: - Political Science |
| Physical Information: 0.07" H x 7.44" W x 9.69" (0.18 lbs) 34 pages |
| Descriptions, Reviews, Etc. |
| Publisher Description: This paper, the first of a two-part series, presents results of an unsteady rotordynamic analysis of a long-bearing squeeze film damper executing circular centered orbits using a fluid circuit approach. A series of nodes and branches represent the geometry of the flow circuit. The mass and momentum conservation equations are solved to predict the pressure distribution in the squeeze film. The motion of the bearing is simulated by the variation of geometry within the flow path. The modeling methodology is benchmarked against published experimental long-bearing squeeze film damper test results. The model provides good agreement with the experimental damping coefficient. |