Effects of non-metallic inclusions on the crack propagation in bearing steel

被引：74

作者：

Guan, Jian ^{[1
]}

Wang, Liqin ^{[1
]}

Zhang, Chuanwei ^{[1
]}

Ma, Xinxin ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Mechatron Engn, Harbin 150001, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2017年 / 106卷

基金：

国家高技术研究发展计划(863计划);

关键词：

Inclusion; Stress concentration; Subsurface crack; Stress intensity factors; ROLLING-CONTACT FATIGUE; NUMERICAL-SIMULATION; DEFORMATION; BEHAVIOR; STRAIN; INITIATION; STRIPS; MODEL; OXIDE; FEM;

D O I：

10.1016/j.triboint.2016.10.030

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The crack propagation in bearing steel with a non-metallic inclusion is analyzed by Voronoi finite element method. The load applied on the Voronoi finite element model is obtained by combination of quasi-dynamic method and Hertzian contact theory. Von Mises stress distribution in the micro-domain is calculated to determine the crack initiation. The result shows that the non-metallic inclusion acts as stress raiser and the maximum von Mises stress appears near the inclusion. Thus, we can conclude that the crack is initiated near the inclusion. Stress intensity factors (SIFs) were calculated to study the crack propagation as a function of inclusion elastic modulus, size, and depth. The crack is more likely to grow when the inclusion is soft, small and shallow.

引用

页码：123 / 131

页数：9

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