Structures Dynamic Property Analysis of Elastic Composite Cylindrical Rolling Element

IF 0.9 Q4 ENGINEERING, MECHANICAL

International Journal of Rotating Machinery Pub Date : 2021-10-18 DOI:10.1155/2021/4244659

Yao Qishui, Chen Qianxu, Yuan Jianghong, Yang Wen

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引用次数: 2

Abstract

Elastic composite cylindrical roller bearing is a novel type of roller bearing whose rolling element is designed by innovating the rolling element structure of cylindrical roller bearings. For the purpose of investigating the dynamic properties of the rolling elements with different structural parameters and solving the modes of elastic composite cylindrical rolling element with different filling degrees, first, this study compares elastic composite cylindrical rolling element to solid cylindrical rolling element, in terms of natural frequency and vibration mode. Next, the integration time step is determined, based on the natural frequency of the vibration in the Y direction, the response of various rolling element, under impact loads, is solved. Furthermore, the laws of the energy changes and nodal displacement variations of rolling element are explored, at different filling degrees. Finally, adopting the decay method, the damping ratio of elastic composite cylindrical rolling element, under different structural parameters and external loads, is calculated. According to the results, with the increase of filling degree, the natural frequencies of various orders of elastic composite cylindrical rolling element gradually declined. The damping ratio of rolling elements decreased, as the filling degree increased, while it could be changed by adjusting the structural dimensions of rolling elements. The analysis results of this study provide some theoretical reference for studies on the parameter optimization of rolling element structures, the vibration and noise reduction of elastic composite cylindrical roller bearings.

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弹性复合圆柱滚动体结构动力性能分析

弹性复合圆柱滚子轴承是一种新型滚子轴承，其滚动元件是通过对圆柱滚子轴承滚动元件结构的创新而设计的。为了研究不同结构参数的滚动元件的动力学特性，求解不同填充度的弹性复合圆柱滚动元件的模态，本研究首先从固有频率和振动模态两个方面对弹性复合圆柱滚子滚动元件和实心圆柱滚动元件进行了比较。接下来，确定积分时间步长，基于Y方向上振动的固有频率，求解各种滚动元件在冲击载荷下的响应。探讨了不同填充度下滚动体能量变化和节点位移变化的规律。最后，采用衰减法计算了弹性复合材料圆柱滚动元件在不同结构参数和外载荷作用下的阻尼比。结果表明，随着填充度的增加，弹性复合材料圆柱滚动体各阶固有频率逐渐下降。随着填充度的增加，滚动元件的阻尼比减小，而通过调整滚动元件的结构尺寸可以改变阻尼比。本研究的分析结果为弹性复合材料圆柱滚子轴承的滚动元件结构参数优化、减振降噪研究提供了一些理论参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.