A Preliminary Nonlinear Analysis of the Axial Transient Response of the Sector-Shaped Hydrodynamic Thrust Bearing-Rotor System

[+] Author and Article Information
Q. Zhu, W. J. Zhang

Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada

J. Tribol 125(4), 854-858 (Sep 25, 2003) (5 pages) doi:10.1115/1.1575775 History: Received February 14, 2002; Revised January 24, 2003; Online September 25, 2003
Copyright © 2003 by ASME
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Trust bearing-rotor system
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Lamped spring mass model for vibration of the thrust bearing-rotor system under the linear condition
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Structure of thrust bearing
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Structure of a thrust pad and its slope angle α and oil film thickness h0: (a) structure of a thrust pad; and (b) slope angle α and oil film thickness h0
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Oil film stiffness coefficient K and damping coefficient C of thrust pad versus initial oil film thickness h0: (a) K−h0 curve; and (b) C−h0 curve
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Maximum amplitude of axial transient response (Dash line is the transient response of linear system, continuous line is the axial transient response of nonlinear system (1) ΔF=4000 N, (2) ΔF=1000 N, and (3) ΔF=400 N) (a) tan α=1:1000; (b) tan α=1:500; (c) tan α=1:200; and (d) tan α=1:100
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Axial nonlinear transient response with h01=60 μm: (a) tan α=1:1000; (b) tan α=1:500; (c) tan α=1:200; and (d) tan α=1:100




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