A test rig for the identification of rotordynamic coefficients of fluid film bearings /
A test rig and measurement procedure to identify the
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1995.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | A test rig and measurement procedure to identify the and computer system record the dynamic response at a available fluid supply pressures to 689 kPa (100 psi). averaged. Bearing stiffness, damping, and inertia force coefficients are then identified from an impedance matrix in coefficients follow the same trends as theoretical coefficients, but compare poorly. design of the machine. The maximum operating speed of the distortion. The identified stiffness and damping elements are described. The test apparatus allows the exchange of test articles without modifications to the basic film damper at various journal center static (offset) frequency of 12,000 samples per second. Test bearing elements general, the identified damping coefficients correlate well Impact load excitations in two orthogonal directions bring journal static operating position and the predicted journal positions are presented for three levels of impact loads. In ratio (L/D) of 0.30. The difference between the experimental rig is 9,000 rpm, with static loads to 4,450 N (1,000 lb) and rotordynamic coefficients of generic fluid film bearing static operating position is attributed to localized thermal tests for a plain journal bearing with a length-to-diameter the frequency domain. Dynamic tests for an open ends squeeze the test bearing into dynamic motion, and a data acquisition time responses are transformed into the frequency domain and undergo multiple forced dynamic tests, and the corresponding with theoretical predictions. Also presented are dynamic |
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| Item Description: | "Major subject: Mechanical Engineering". Vita. |
| Physical Description: | xix, 80 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |