Study on Contact Force and Vibration Characteristics of Composite Cylindrical Roller Bearing

IF 0.9 Q4 ENGINEERING, MECHANICAL International Journal of Rotating Machinery Pub Date : 2022-10-07 DOI:10.1155/2022/7590924

Tie Qu, Q. Bian, G. Zeng, C. Zhao, Xiangyun Zhang, Lifeng Ma, Ming Chen

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Abstract

The composite cylindrical roller is composed of a hollow cylindrical roller and a filler body and is a new type of structure roller bearing. In order to explore the influence of different parameters on the contact characteristics and vibration characteristics of bearings, finite element models of static contact, modal analysis, and harmonic response analysis of composite cylindrical roller bearings were established based on ABAQUS software. The effects of filling rate, radial force, and the number of rollers on parameters such as contact force, contact stress, and natural frequency were studied. The results show that when the filling rate of the cylindrical roller increases from 0% to 70%, the natural frequency of bearing and the peak frequency of its harmonic response decrease, the force distribution in the contact area is also more uniform, and the maximum contact stress of the roller is reduced by 29.1%; the radial force has no effect on the peak frequency of the harmonic response of the bearing, but the increase of the radial force will increase the peak value of the response displacement, and the contact force and stress of the rollers will also increase. When the number of rollers increases from 11 to 15, the natural frequency and the peak frequency of harmonic response increase, the peak displacement decreases, the contact force distribution of the rollers in the bearing area is more uniform, and the maximum contact stress of the roller is reduced by 21.1%. The research result can provide a theoretical reference for the structural optimization and engineering application of elastic composite cylindrical roller bearings.

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复合材料圆柱滚子轴承接触力及振动特性研究

复合圆柱滚子由空心圆柱滚子和填充体组成，是一种新型结构滚子轴承。为了探索不同参数对轴承接触特性和振动特性的影响，基于ABAQUS软件建立了复合圆柱滚子轴承静接触有限元模型、模态分析和谐波响应分析。研究了填充率、径向力和辊数对接触力、接触应力和固有频率等参数的影响。结果表明:当圆柱滚子填充率从0%增加到70%时，轴承的固有频率及其谐波响应峰值频率降低，接触区域的力分布也更加均匀，滚子的最大接触应力降低了29.1%;径向力对轴承谐波响应的峰值频率没有影响，但径向力的增加会使响应位移的峰值增加，滚子的接触力和应力也会增加。当滚子数从11个增加到15个时，谐波响应的固有频率和峰值频率增加，峰值位移减小，滚子在承载区域的接触力分布更加均匀，滚子的最大接触应力降低了21.1%。研究结果可为弹性复合圆柱滚子轴承的结构优化和工程应用提供理论参考。

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来源期刊

International Journal of Rotating Machinery ENGINEERING, MECHANICAL-

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

25 weeks

期刊介绍： This comprehensive journal provides the latest information on rotating machines and machine elements. This technology has become essential to many industrial processes, including gas-, steam-, water-, or wind-driven turbines at power generation systems, and in food processing, automobile and airplane engines, heating, refrigeration, air conditioning, and chemical or petroleum refining. In spite of the importance of rotating machinery and the huge financial resources involved in the industry, only a few publications distribute research and development information on the prime movers. This journal is the first source to combine the technology, as it applies to all of these specialties, previously scattered throughout literature.