裂纹方向对轴承裂纹应力强度因子的影响

doi:10.7523/j.issn.2095-6134.2018.06.005

中国科学院大学学报 ›› 2018, Vol. 35 ›› Issue (6): 743-748.DOI: 10.7523/j.issn.2095-6134.2018.06.005

裂纹方向对轴承裂纹应力强度因子的影响

刘珑¹, 时军波¹, 丁宁¹, 胡志文²

1 山东省科学院山东省材料失效分析与安全评估工程技术研究中心, 济南 250014;
2 香港城市大学物理及材料科学系, 香港 999077

收稿日期:2017-06-13 修回日期:2017-12-07 发布日期:2018-11-15
通讯作者: 丁宁
基金资助:
国家自然科学基金（11404192，11605106）、山东省重点研发计划项目（2015GSF120002）、山东省"泰山学者"海外特聘专家专项（tshw20120745）、山东省优秀中青年科学家科研奖励基金（BS2014CL002）和山东省科学院青年基金（2015QN003，2017QN001）资助

Effects of crack orientations on crack stress intensity factors in a bearing

LIU Long¹, SHI Junbo¹, DING Ning¹, WU Lawrence Chiman²

1 Shandong Engineering Technology Center for Material Failure Analysis and Safety Assessment, Shandong Academy of Sciences, Jinan 250014, China;
2 Department of Physics and Materials Science, City University of Hongkong, Hongkong 999077, China

Received:2017-06-13 Revised:2017-12-07 Published:2018-11-15

摘要/Abstract

摘要： 利用有限元分析方法，研究裂纹与内圈轴向的夹角和裂纹与内圈径向的夹角两个因素对于裂纹扩展速率的影响。研究结果表明：当裂纹与内圈轴向夹角在10°左右时，裂纹扩展速率出现最大值，等效应力强度因子为0.22MPa ·m^0.5；夹角在90°左右时，裂纹扩展速率出现最小值，等效应力强度因子为0.039MPa ·m^0.5。当裂纹与内圈径向夹角在10°左右时，裂纹扩展速率出现最大值，等效应力强度因子为0.19MPa ·m^0.5；夹角在80°和-80°左右时，裂纹扩展速率出现最小值，等效应力强度因子为0.15MPa ·m^0.5。

关键词: 轴承, 裂纹方向, 裂纹扩展速率, 应力强度因子, 有限元

Abstract: Effects of crack orientations on stress intensity factors were studied using the finite element analysis method. We considered the angle between the crack orientation and inner ring axial direction and the angle between the crack orientation and inner ring radius direction. The results indicate that when the angle between the crack orientation and inner ring axial direction is about 10°, the crack propagation rate reaches a maximum and the equivalent stress intensity factor is 0.22MPa·m^0.5. The crack propagation rate reaches a minimum and the equivalent stress intensity factor is 0.039MPa·m^0.5 when the angle between the crack orientation and inner ring axial direction is about 90°. When the angle between the crack orientation and inner ring radius direction is about 10°, the crack propagation rate reaches another maximum and the equivalent stress intensity factor is 0.19MPa·m^0.5. When the angle between the crack orientation and inner ring radius direction is about 80° or -80°, the crack propagation rate reaches another minimum and the equivalent stress intensity factor is about 0.15MPa·m^0.5. These results indicate that the crack orientation influences the crack propagation rate significantly.

Key words: bearing, crack orientation, crack propagation rate, stress intensity factor, finite element

中图分类号:

O346.1

刘珑, 时军波, 丁宁, 胡志文. 裂纹方向对轴承裂纹应力强度因子的影响[J]. 中国科学院大学学报, 2018, 35(6): 743-748.

LIU Long, SHI Junbo, DING Ning, WU Lawrence Chiman. Effects of crack orientations on crack stress intensity factors in a bearing[J]. , 2018, 35(6): 743-748.

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裂纹方向对轴承裂纹应力强度因子的影响

Effects of crack orientations on crack stress intensity factors in a bearing

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