Stress analysis of shrink fitting process of ultra-thin reactor coolant pump rotor-can

被引：5
|
作者：
Cui, Yan [1 ]
Zhang, Liwen [1 ]
Zhang, Chi [1 ]
Li, Ruiqin [1 ]
Li, Fei [1 ]
机构：
[1] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China
来源：
ANNALS OF NUCLEAR ENERGY | 2021年 / 162卷
基金：
国家重点研发计划;
关键词：
Rotor-can; Reactor coolant pump; Shrink fitting process; Finite element model; Hole-drilling Strain-gauge method; FAILURE;
D O I：
10.1016/j.anucene.2021.108492
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
This paper aims to accurately predict the stress evolution and stress distribution during shrink fitting process. The hoop stress on rotor-can after shrink fitting process was calculated using Lame's equation. Then finite element (FE) method was used to calculate the stress evolution on rotor-can during shrink fitting process. The effects of manufacture defects on stress distribution on rotor-can after shrink fitting process was analyzed. Finally, a shrink fitting experiment was carried out, and the residual stress on rotor-can after shrink fitting was measured by hole-drilling strain-gauge method. The results show that during shrink fitting process, thermal stress would occur on rotor-can along axial direction and hoop direction. After shrink fitting process, the fitting stress was along hoop direction. When there were ring-shaped defects on rotor-can, there would be axial stress in the defective area. The theoretical calculation results, simulation results and experimental results are in good agreement with each other. (c) 2021 Elsevier Ltd. All rights reserved.
引用
收藏
页数：10
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