Fracture Analysis and Working Stress Calculation of Bearing Cage Used in Charging Pump in a Nuclear Power Plant

doi:10.3390/met13081380

IMR OpenIR

	Fracture Analysis and Working Stress Calculation of Bearing Cage Used in Charging Pump in a Nuclear Power Plant
	Chen, Qiang 1,2,3,4; Jiang, Shengli 3,4; Duan, Deli 3,4
通讯作者	Jiang, Shengli(sljiang@imr.ac.cn)
	2023-08-01
发表期刊	METALS
卷号	13 期号:8 页码:14
摘要	This paper presents an analysis of the fracture accident of a cylindrical roller bearing cage used in a charging pump in a nuclear power plant. The causes and mechanisms of bearing cage breakage were investigated by material failure analysis and simulation calculations. Macroscopic observation results confirmed that the cage fracture occurred at the stress concentration position. The microfracture morphology of the cage obtained from scanning electron microscopy showed a fatigue feature. The analysis of residual stress indicated large residual stress perpendicular to the fracture surface. The finite element calculation showed that when the bearing was moving in and out of the working area during operation, large working stress appeared at the stress concentration position. Working stress and residual stress acted together, approaching the fatigue limit of materials, and finally led to the cage fatigue fracture. The stress of the other two structural cages of the same type of bearing was also calculated, and no such large stress concentration was identified; thus, one plastic cage was temporarily used.
关键词	bearing cage fatigue fracture finite element calculation nuclear power plant
资助者	The authors gratefully acknowledge professor-level engineer Yinhui Che for his help in design of methodology, senior technician Chengrun Cai for his assistance of investigation, and engineer Jiazhu Cai for his efforts in data collection.
DOI	10.3390/met13081380
收录类别	SCI
语种	英语
资助项目	The authors gratefully acknowledge professor-level engineer Yinhui Che for his help in design of methodology, senior technician Chengrun Cai for his assistance of investigation, and engineer Jiazhu Cai for his efforts in data collection.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001055392700001
出版者	MDPI
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179048
专题	中国科学院金属研究所
通讯作者	Jiang, Shengli
作者单位	1.Suzhou Nucl Power Res Inst Co Ltd, Shenzhen 518000, Peoples R China 2.Natl Engn Res Ctr Nucl Power Plant Safety & Reliab, Sch Mat Sci & Engn, Shenzhen 518000, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 4.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Chen, Qiang,Jiang, Shengli,Duan, Deli. Fracture Analysis and Working Stress Calculation of Bearing Cage Used in Charging Pump in a Nuclear Power Plant[J]. METALS,2023,13(8):14.
APA	Chen, Qiang,Jiang, Shengli,&Duan, Deli.(2023).Fracture Analysis and Working Stress Calculation of Bearing Cage Used in Charging Pump in a Nuclear Power Plant.METALS,13(8),14.
MLA	Chen, Qiang,et al."Fracture Analysis and Working Stress Calculation of Bearing Cage Used in Charging Pump in a Nuclear Power Plant".METALS 13.8(2023):14.