考虑磨粒影响的空间导电滑环电接触行为及多物理场耦合效应研究

陈瑶; 李璞; 张强; 周青华; 刘艳敏; 骆孝武; 陈佳俊; 黄小龙; 熊林冬

doi:10.7643/ issn.1672-9242.2025.09.014

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装备环境工程 ›› 2025, Vol. 22 ›› Issue (9) : 126-137. DOI: 10.7643/ issn.1672-9242.2025.09.014

航空航天装备

考虑磨粒影响的空间导电滑环电接触行为及多物理场耦合效应研究

陈瑶^1a, 李璞^1a*, 张强^2*, 周青华^1a, 刘艳敏², 骆孝武^1a, 陈佳俊^1a, 黄小龙^1b, 熊林冬³

作者信息 +

Investigation on Coupled Electro-thermo-mechanical Response of Space Slip Rings Influenced by Wear Debris

CHEN Yao^1a, LI Pu^1a*, ZHANG Qiang^2*, ZHOU Qinghua^1a, LIU Yanmin², LUO Xiaowu^1a, CHEN Jiajun^1a, HUANG Xiaolong^1b, XIONG Lindong³

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文章历史 +

摘要

目的探讨磨粒存在对空间导电滑环电-热-力多物理场分布状态及摩擦磨损行为的影响机制,为提升航天器电能传输效率与可靠性提供理论支撑。方法基于ABAQUS有限元平台,构建多物理场耦合仿真模型,系统研究不同服役工况（含磨粒分布特征）及材料本构关系对刷-环结构接触压力、弹性场、热场与电场耦合效应的影响规律。结果磨粒的产生导致有效接触面积减小,接触应力显著增大,诱发“磨损-粗糙化-再磨损”的恶性反馈。热量集中于电刷-磨粒接触区域,边界温度梯度增大,引发局部热损伤。磨粒接触点为电场畸变核心区域,局部电阻升高致使电流密度剧烈波动,影响电传输稳定性。弹塑性本构模型更贴近实际服役过程中的接触演化与温度响应特征。结论本研究揭示了磨粒作用下空间导电滑环的多场耦合演化机理。磨粒诱发的应力集中、热聚集与电场畸变显著加剧磨损与电接触失效风险。优化接触材料性能与服役参数（如载荷、电流密度等）是抑制磨粒损伤、提升系统服役寿命的关键路径。

Abstract

The work aims to investigate the influence mechanism of wear debris presence on the distribution states of electro-thermo-mechanical multi-physics fields and the friction-wear behavior in space conductive slip rings, so as to provide theoretical support for enhancing the efficiency and reliability of power transmission in spacecraft. Utilizing the ABAQUS software, a multi-physics coupling model was established to systematically investigate the influence of different operating conditions (including wear debris distribution characteristics) and material constitutive relationships on the coupled effects of contact pressure, elastic field, thermal field, and electric field in the brush-ring structure. The generation of wear debris led to a reduction in the effective contact area and a significant increase in the contact stress, inducing a detrimental feedback loop characterized by “wear-surface roughening-renewed wear”. Heat was concentrated in the contact region between the brush and wear debris, with increased temperature gradients at the boundaries causing localized thermal damage. The wear debris contact points constituted the core regions of electric field variation, resulting in enhanced localized electrical resistance and non-uniform electric distortion, while elevated localized electrical resistance resulted in drastic fluctuations in current density, affecting the stability of electrical transmission. The elastoplastic constitutive model more accurately represented the contact evolution and thermal response characteristics in actual services. The study elucidates the multi-field coupling evolution mechanism of space conductive slip rings under the influence of wear debris. Wear debris induced stress concentration, heat accumulation, and electric distortion significantly exacerbate wear and the risk of electrical contact failure. Optimizing properties of contact material and operational parameters (such as applied load, current density) are identified as the critical pathway for mitigating wear debris-induced damage and enhancing system service life.

导出引用

陈瑶, 李璞, 张强, 周青华, 刘艳敏, 骆孝武, 陈佳俊, 黄小龙, 熊林冬. 考虑磨粒影响的空间导电滑环电接触行为及多物理场耦合效应研究[J]. 装备环境工程. 2025, 22(9): 126-137 https://doi.org/10.7643/ issn.1672-9242.2025.09.014

CHEN Yao, LI Pu, ZHANG Qiang, ZHOU Qinghua, LIU Yanmin, LUO Xiaowu, CHEN Jiajun, HUANG Xiaolong, XIONG Lindong. Investigation on Coupled Electro-thermo-mechanical Response of Space Slip Rings Influenced by Wear Debris[J]. Equipment Environmental Engineering. 2025, 22(9): 126-137 https://doi.org/10.7643/ issn.1672-9242.2025.09.014

中图分类号： V443

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