Fretting wear and fatigue life for dynamic power cable conductors under different slip conditions

IF 5.1 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures Pub Date : 2025-05-20 DOI:10.1016/j.marstruc.2025.103847

Yifan Wang , Zhenkui Wang , Haolin Li , Xiaowei Huang , Zhen Guo

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引用次数: 0

Abstract

Under wave, current and motion of floating wind turbines, the cyclic bending of dynamic power cables induces the relative slip between the wires of the cable conductor, leading to wear of wires and subsequently affecting the fatigue life of the conductor. In this study, a numerical model is developed to incorporate the modified version of the Archard equation to simulate the fretting wear of conductor wires, and it is compared with the experimental data to validate the results. The evolution of fretting wear scars, contact pressure distribution and fretting fatigue damage under cyclic loading with gross slip and partial slip conditions is investigated. The effects of coefficient of friction, normal load and slip amplitude on fatigue life are quantitatively analysed by the critical plane approach. The results indicate that the fretting wear under gross slip condition can extend the fatigue life of the conductor, while the fretting wear under partial slip condition reduces the fatigue life. Both the coefficient of friction and normal load significantly affect the fretting wear behaviour and fatigue life of the conductor. A critical state exists between the partial slip and gross slip conditions, and the effect of wear on fatigue life becomes more significant as the fretting wear approaches this critical state.

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动态电力电缆导体在不同滑移条件下的微动磨损和疲劳寿命

在波浪、电流和浮式风力发电机组的运动作用下，动力电缆的循环弯曲引起电缆导体导线之间的相对滑移，导致导线的磨损，进而影响导线的疲劳寿命。本文采用改进的Archard方程建立了模拟导线微动磨损的数值模型，并与实验数据进行了比较，验证了所得结果。研究了总滑移和部分滑移条件下循环载荷下微动磨损痕的演变、接触压力分布和微动疲劳损伤。采用临界平面法定量分析了摩擦系数、法向载荷和滑移幅值对疲劳寿命的影响。结果表明，总滑移状态下的微动磨损可以延长导体的疲劳寿命，而部分滑移状态下的微动磨损则会降低导体的疲劳寿命。摩擦系数和法向载荷对导线的微动磨损性能和疲劳寿命都有显著影响。在部分滑移和总滑移之间存在一个临界状态，当微动磨损接近该临界状态时，磨损对疲劳寿命的影响更为显著。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Marine Structures 工程技术-工程：海洋

CiteScore

8.70

自引率

7.70%

发文量

157

审稿时长

6.4 months

期刊介绍： This journal aims to provide a medium for presentation and discussion of the latest developments in research, design, fabrication and in-service experience relating to marine structures, i.e., all structures of steel, concrete, light alloy or composite construction having an interface with the sea, including ships, fixed and mobile offshore platforms, submarine and submersibles, pipelines, subsea systems for shallow and deep ocean operations and coastal structures such as piers.