Dynamic Analysis of Dual Parallel Spring-Supported Tilting Pad Journal Bearing

被引：0
作者：
Jin, Yingze [1 ]
Wang, Zhicai [1 ]
Zhao, Xuefei [2 ]
机构：
[1] Dalian Maritime Univ, Naval Architecture & Ocean Engn Coll, Dalian 116026, Peoples R China
[2] State Grid Liaoning Elect Power Co Ltd, Panjin Power Supply Co, Panjin 124010, Peoples R China
来源：
LUBRICANTS | 2025年 / 13卷 / 03期
基金：
中国国家自然科学基金;
关键词：
tilting pad journal bearing; dual parallel spring; hydrodynamic lubrication; dynamic analysis; unbalanced load; FILM THICKNESS;
D O I：
10.3390/lubricants13030120
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The elastic-supported tilting pad journal bearing brings new momentum and opportunities for improving the lubrication performance and dynamic stability of high-speed bearing-rotor systems. The objective of this study is to investigate the dynamic and lubrication characteristics of a dual parallel spring-supported tilting pad journal bearing (DPSTPJB) system under unbalanced journal excitation. Considering the tilting angle and radial displacement of the pads, a 10-DOF dynamic model of the four-pad DPSTPJB system is established, accounting for the effects of unbalanced load, nonlinear fluid film force, and parallel spring force/moment. Numerical solutions are obtained for the dynamic responses of the journal and pads as well as the minimum film thickness and maximum film pressure. The effects of spring stiffness, stiffness ratio, and included angle on journal vibration, minimum film thickness, and maximum film pressure are revealed. The results show that the parallel spring parameters have a positive effect on the optimization of bearing performance with an optimal stiffness ratio that minimizes journal vibration and optimizes fluid film thickness and pressure. This research provides a theoretical basis for the optimization design and application of the DPSTPJB.
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页数：16
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