Page 121 - 《摩擦学学报》2021年第5期

第 41 卷 第 5 期 摩 擦 学 学 报 Vol 41 No 5
2021 年 9 月 Tribology Sept, 2021

DOI: 10.16078/j.tribology.2021157

考虑微动磨损的钢丝微动疲劳裂纹扩展

寿命预测研究

1,2*
王大刚 , 张 俊 1
(1. 中国矿业大学 机电工程学院, 江苏 徐州 221116;
2. 中国矿业大学 矿山智能采掘装备省部共建协同创新中心, 江苏 徐州 221116)

摘 要: 微动疲劳是矿井提升钢丝绳主要失效形式之一，在钢丝微动疲劳过程中，微动磨损严重影响钢丝微动疲劳
裂纹扩展特性，进而制约钢丝微动疲劳断裂机制，故开展考虑微动磨损的钢丝微动疲劳裂纹扩展寿命预测研究至
关重要. 运用自制钢丝微动疲劳试验机开展钢丝微动疲劳试验和拉伸断裂试验，通过高速度数码显微系统揭示微动
疲劳过程中钢丝微动磨损演化、裂纹萌生和扩展及断裂特性，基于摩擦学和断裂力学理论，运用有限元法、循环迭
代法和虚拟裂纹闭合技术建立了考虑微动磨损的钢丝微动疲劳裂纹扩展寿命预测模型，并进行试验验证. 结果表
明：采用微动疲劳过程稳定阶段磨损系数预测钢丝微动磨损演化可保证预测正确性，微动疲劳过程中钢丝主要为
I型裂纹扩展模式，考虑微动磨损的钢丝微动疲劳裂纹扩展寿命预测值和试验值吻合较好，验证了预测模型正确性.
关键词: 钢丝; 微动疲劳; 裂纹扩展; 寿命预测; 微动磨损
中图分类号: TH117.1 文献标志码: A 文章编号: 1004-0595(2021)05–0710–13

Prediction of Fretting Fatigue Crack Propagation Life of
Steel Wire Considering Fretting Wear

1,2*
WANG Dagang , ZHANG Jun 1

(1. School of Mechatronic Engineering, China University of Mining and Technology, Jiangsu Xuzhou 221116, China
2. Jiangsu Province and Education Ministry Co-sponsored Collaborative Innovation Center of Intelligent Mining
Equipment, China University of Mining and Technology, Jiangsu Xuzhou 221116, China)
Abstract: Fretting fatigue is one of main failure modes of hoisting rope in coal mine. During fretting fatigue of steel
wire, fretting wear seriously affects the fretting fatigue crack propagation characteristic of steel wire, and thereby
restricts the fretting fatigue fracture mechanism of steel wire. Therefore, it is of great importance to carry out the
research on prediction of fretting fatigue crack propagation life of steel wire considering fretting wear. Fretting fatigue
and tensile fracture tests of steel wires were carried out by employing the self-made fretting fatigue test rig. Fretting wear
evolution, crack initiation and propagation, and fracture characteristics of steel wire during fretting fatigue were revealed
using the high-speed digital microscope system. The prediction model of fretting fatigue crack propagation life of steel
wire considering fretting wear was established based on theories of tribology and fracture mechanics and applying the
finite element method, iterative method and virtual crack closure technology, which was validated by fretting fatigue
tests. The results showed that the prediction of fretting wear evolution of steel wire using the wear coefficient at the
stabilized stage of fretting fatigue ensured the prediction accuracy. The mode I crack propagation was mainly present
during fretting fatigue of steel wire. Predicted fretting fatigue crack propagation life of steel wire considering fretting
wear was consistent with the experimental value, which validated the prediction model.
Key words: steel wire; fretting fatigue; crack propagation; life estimation; fretting wear

Received 8 July 2021, revised 17 August 2021, accepted 17 August 2021, available online 28 September 2021.
*Corresponding author. E-mail: wangdg@cumt.edu.cn, Tel: +86-15162110590..
The project was supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
江苏高校优势学科建设工程项目(PAPD) 资助.