&nbsp;Static and dynamic characteristics of flexure-pivot tilting pad journal bearings

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (2) : 236-241.

Static and dynamic characteristics of flexure-pivot tilting pad journal bearings

CHEN shujiang XIONG Wentao LU Changhou MA Jinkui

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Abstract

A novel elliptical flexure-pivot tilting pad bearing was introduced here. The model of tilting pad oil film thickness, and the model of journal and tilting pad equilibrium were established based on the flexure hinge stiffness model built here. Using the finite difference method and Newton-Raphson method, the effects of rotational stiffness of flexure hinge on static and dynamic performances of the new bearing were analyzed. The results showed that the smaller the flexure hinge rotational stiffness, the closer to conventional tilting pad bearing the new bearing, the better the new bearing’s stability. The optimal rotational stiffness range of flexure hinge was also obtained. The study results provided a reference for the design and application of flexure-pivot tilting pad bearings.

Key words

flexure hinge / tilting pad bearing / rotational stiffness / static and dynamic characteristic

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CHEN shujiang XIONG Wentao LU Changhou MA Jinkui. Static and dynamic characteristics of flexure-pivot tilting pad journal bearings[J]. Journal of Vibration and Shock, 2018, 37(2): 236-241

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