某型飞机钢索疲劳断丝原因分析及设计优化

孙洪杰; 李忠芳; 李承宇

doi:10.7643/ issn.1672-9242.2025.12.007

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装备环境工程 ›› 2025, Vol. 22 ›› Issue (12) : 49-56. DOI: 10.7643/ issn.1672-9242.2025.12.007

航空航天装备

某型飞机钢索疲劳断丝原因分析及设计优化

孙洪杰¹, 李忠芳^2,*, 李承宇¹

作者信息 +

Analysis and Design Optimization of Fatigue Broken Wire of a Certain Aircraft Cable

SUN Hongjie¹, LI Zhongfang^2,*, LI Chengyu¹

Author information +

文章历史 +

摘要

目的改善某型飞机调整片操纵系统导向滑轮处钢索频繁疲劳断丝的问题,延长钢索使用寿命。方法基于系统布局与运行参数,对钢索传动结构进行静力学、动力学及空气动力学分析,分析出影响钢索寿命的多个因素,通过耦合应力分析与多参数优化方法,综合对比多参数下的应力值大小,提出合理的优化方案。结果适当增大滑轮直径可降低弯曲应力15.3%,支撑槽前移能减少应力幅值约40%,质量优化可减少应力峰值40.6%,调节初始紧度可提升振动能量吸收效率12%,材料更换可有效提高钢索抗疲劳指数。结论本研究建立的飞机钢索应力分析与优化方法,可为航空装备钢索传动系统抗疲劳设计提供理论依据。

Abstract

The work aims to solve the problem of frequent fatigue and wire breakage of the cable at the guide pulley of the control system of a certain aircraft, and to prolong the service life of the cable. Based on the system layout and operation parameters, statics, dynamics and aerodynamics analyses were conducted on the cable transmission structure to analyze factors that affected the cable life. Through coupling stress analysis and multi-parameter optimization, the stresses under multi-parameters were comprehensively compared, and a reasonable optimization scheme was put forward. The research showed that the bending stress could be reduced by 15.3% by appropriately increasing the pulley diameter, the stress amplitude could be reduced by about 40% by moving the supporting groove forward, the peak stress could be reduced by 17.6% by optimizing the quality, the vibration energy absorption efficiency could be improved by 12% by adjusting the initial tightness, and the fatigue index of the cable could be effectively improved by replacing the materials. The stress analysis and optimization method of aircraft cable established in this study can provide theoretical basis for the anti-fatigue design of cable transmission system of aviation equipment.

导出引用

孙洪杰, 李忠芳, 李承宇. 某型飞机钢索疲劳断丝原因分析及设计优化[J]. 装备环境工程. 2025, 22(12): 49-56 https://doi.org/10.7643/ issn.1672-9242.2025.12.007

SUN Hongjie, LI Zhongfang, LI Chengyu. Analysis and Design Optimization of Fatigue Broken Wire of a Certain Aircraft Cable[J]. Equipment Environmental Engineering. 2025, 22(12): 49-56 https://doi.org/10.7643/ issn.1672-9242.2025.12.007

中图分类号： V227+.3

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