Dynamic Analysis of the Bearing-Rotor System with the Variation of Cage’s Pocket Hole Diameter

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL

Iranian Journal of Science and Technology-Transactions of Mechanical Engineering Pub Date : 2024-04-30 DOI:10.1007/s40997-024-00764-z

Zinan Wang, Qian Wang, Peng Zhou, Jiacan Xu, Zhan Wang

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Abstract

Ceramic bearings are widely used in industrial production. They can be used to maintain accurate operations over a long period of time. However, the bearing model that was so thoroughly investigated has not been adapted for ceramic bearings. To better calculate the characteristics of ceramic bearings, the existing model may be modified to account for the high stiffness of ceramics. In this paper, the vibration response is investigated and used to modify the analytical model of bearing-rotor dynamics. Under the influence of thermal deformation, the dynamic parameters of the bearing components, including stiffness, traction forces, and Hertz contact force, are analyzed first. On the basis of the modified dynamic model, the vibration response of the bearing-rotor system, time domain, Poincaré phase diagram, phase trajectory, and bifurcation diagram are simulated under various cage pocket hole diameters. The simulation results indicate that increasing the cavity diameter can appropriately improve the dynamics of the rotor system at high speeds. The established model is highly accurate, with an error of less than 8% when comparing the simulation and experimental results. The study’s relevance to bearing structural design has been confirmed.

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轴承-转子系统随保持架套孔直径变化的动态分析

陶瓷轴承广泛应用于工业生产。它们可以长期保持精确运行。然而，经过深入研究的轴承模型尚未适用于陶瓷轴承。为了更好地计算陶瓷轴承的特性，可以对现有模型进行修改，以考虑陶瓷的高刚度。本文对振动响应进行了研究，并利用振动响应修改了轴承转子动力学分析模型。在热变形的影响下，首先分析了轴承部件的动态参数，包括刚度、牵引力和赫兹接触力。在修正的动力学模型基础上，模拟了不同保持架孔径下轴承-转子系统的振动响应、时域、Poincaré 相图、相轨迹和分叉图。仿真结果表明，增大空腔直径可以适当改善转子系统在高速运转时的动力学性能。所建立的模型精确度很高，模拟结果与实验结果的误差小于 8%。该研究与轴承结构设计的相关性已得到证实。

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来源期刊

Iranian Journal of Science and Technology-Transactions of Mechanical Engineering ENGINEERING, MECHANICAL-

CiteScore

2.90

自引率

7.70%

发文量

审稿时长

>12 weeks

期刊介绍： Transactions of Mechanical Engineering is to foster the growth of scientific research in all branches of mechanical engineering and its related grounds and to provide a medium by means of which the fruits of these researches may be brought to the attentionof the world’s scientific communities. The journal has the focus on the frontier topics in the theoretical, mathematical, numerical, experimental and scientific developments in mechanical engineering as well as applications of established techniques to new domains in various mechanical engineering disciplines such as: Solid Mechanics, Kinematics, Dynamics Vibration and Control, Fluids Mechanics, Thermodynamics and Heat Transfer, Energy and Environment, Computational Mechanics, Bio Micro and Nano Mechanics and Design and Materials Engineering & Manufacturing. The editors will welcome papers from all professors and researchers from universities, research centers, organizations, companies and industries from all over the world in the hope that this will advance the scientific standards of the journal and provide a channel of communication between Iranian Scholars and their colleague in other parts of the world.