Research on Elastic Composite Cylindrical Roller Bearing Contact Fatigue Based on the Subsurface Stress

IF 0.9 Q4 ENGINEERING, MECHANICAL International Journal of Rotating Machinery Pub Date : 2023-05-17 DOI:10.1155/2023/7622545
Wen Yang, Qishui Yao, J. Yu, Yunxin Kuang, Jianfeng Huang
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Abstract

In order to study the elastic contact fatigue problems of composite cylindrical roller bearing, through the three stages of contact fatigue crack initiation, propagation, and ablating of cylindrical roller bearing theoretically analyzed, the subsurface stress is one of the factors of contact fatigue damage. By finite element method and theoretical analytic method with solid cylindrical roller bearing contact surface, the size and distribution of shear stress are analyzed, and comparing the calculation results of two methods, the comparison results show that the finite element method to calculate the bearing contact problem is scientific and reasonable. Through the finite element method of cylindrical roller bearing and elastic composite cylindrical roller bearing subsurface shear stress and equivalent stress on the surface of numerical analysis, the calculation results show that the subsurface stress value of elastic composite cylindrical roller bearings was 31.65% smaller than that of ordinary cylindrical roller bearings, and the distribution of the maximum subsurface stress value of elastic composite cylindrical roller bearings was shallower than that of cylindrical roller bearings. The elastic composite cylindrical roller bearings have significant advantages over cylindrical roller bearings in terms of subsurface stress and have stronger resistance to contact fatigue damage. The finite element method is used to analyze the subsurface stress of elastic composite cylindrical roller bearings with different filling degrees. The results show that the subsurface shear stress and equivalent stress values of elastic composite cylindrical roller bearings with filling degrees of 55% to 65% are maintained at a relatively low level, and the depth of the maximum stress is minimal, which is basically distributed on the surface of the rolling body. The magnitude and distribution of subsurface stresses in elastic composite cylindrical roller bearings provide a reference for more reasonable structural design.
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基于次表面应力的弹性复合圆柱滚子轴承接触疲劳研究
为了研究复合材料圆柱滚子轴承的弹性接触疲劳问题,通过对圆柱滚子轴承的接触疲劳裂纹萌生、扩展和烧蚀三个阶段进行理论分析,发现亚表面应力是造成接触疲劳损伤的因素之一。通过有限元法和理论解析法分别对实体圆柱滚子轴承接触面剪应力的大小和分布进行了分析,并对两种方法的计算结果进行了比较,对比结果表明有限元法计算轴承接触问题是科学合理的。通过有限元法对圆柱滚子轴承和弹性复合圆柱滚子轴承的亚表面剪应力和等效应力进行数值分析,计算结果表明:弹性复合圆柱滚子轴承的亚表面应力值比普通圆柱滚子轴承小31.65%;弹性复合圆柱滚子轴承的最大次表面应力值分布较圆柱滚子轴承浅。弹性复合圆柱滚子轴承在次表面应力方面优于圆柱滚子轴承,具有更强的抗接触疲劳损伤能力。采用有限元法分析了不同填充度弹性复合圆柱滚子轴承的次表面应力。结果表明:填充度为55% ~ 65%的弹性复合圆柱滚子轴承的亚表面剪切应力和等效应力值保持在较低水平,最大应力深度最小,基本分布在滚动体表面;弹性复合圆柱滚子轴承的次表面应力大小和分布为更合理的结构设计提供了参考。
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来源期刊
CiteScore
2.40
自引率
0.00%
发文量
10
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.
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