Effect of displacement amplitude on fretting fatigue behavior of hoisting rope wires in low cycle fatigue
Effect of displacement amplitude on fretting fatigue behavior of hoisting rope wires in low cycle fatigue
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DOI：
10.1016/j.triboint.2012.04.008
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发表时间：
2012-08-01
影响因子：
6.2
通讯作者：
Ge, Shirong
中科院分区：
文献类型：
--
作者：
Wang, Dagang;Zhang, Dekun;Ge, Shirong
研究了位移幅值对钢丝在两种应变水平下的低周微动疲劳行为的影响。研究了归一化切向力的演变和接触疤痕的形貌，以探讨磨损机制。探讨了微动状态和微动疲劳寿命。声发射技术被用来揭示导线失效机制。结果表明，位移幅值的增大使归一化切向力增大，但微动疲劳寿命降低。微动接触条件均为混合微动区。随着位移幅值的增大，微动损伤和裂纹形核与扩展加速。(C)2012爱思唯尔有限公司保留所有权利。
The effect of displacement amplitude on fretting fatigue behavior of steel wires in low cycle fatigue at two cyclic strain levels was investigated. Evolutions of normalized tangential force and morphologies of contact scars were investigated to examine the wear mechanisms. Fretting regime and fretting fatigue life were explored. Acoustic emission technique was utilized to reveal wire failure mechanisms. The results show that an increase of displacement amplitude increases normalized tangential force but decreases the fretting fatigue life. Fretting contact conditions are all mixed fretting regimes. Fretting damage and crack nucleation and propagation accelerate with increasing displacement amplitude. (C) 2012 Elsevier Ltd. All rights reserved.