东北大学学报（自然科学版）

东北大学学报（自然科学版） ›› 2022, Vol. 43 ›› Issue (12): 1732-1740.DOI: 10.12068/j.issn.1005-3026.2022.12.009

• 机械工程 • 上一篇    下一篇

直升机主减典型部件故障动力学建模与仿真

胡蛟1,2， 胡茑庆1,2， 沈建1,2， 罗鹏1,2   

  1. (1. 国防科技大学 智能科学学院， 湖南 长沙410073； 2. 国防科技大学 装备综合保障技术重点实验室， 湖南 长沙410073)
  • 发布日期:2022-12-26
  • 通讯作者: 胡蛟
  • 作者简介:胡蛟(1984-)，男，湖南益阳人，国防科技大学博士研究生； 胡茑庆(1967-)，男，湖南永州人，国防科技大学教授，博士生导师.
  • 基金资助:
    国家重点研发计划项目(2018YFB1702401)； 国家自然科学基金资助项目(51975576).

Fault Dynamic Modeling and Simulation for Typical Components of Helicopter Main Reducers

HU Jiao1,2， HU Niao-qing1,2， SHEN Jian1,2， LUO Peng1,2   

  1. 1. College of Intelligence Science and Technology， National University of Defense Technology， Changsha 410073， China; 2. Laboratory of Science and Technology on Integrated Logistics Support， National University of Defense Technology， Changsha 410073， China.
  • Published:2022-12-26
  • Contact: HU Niao-qing
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摘要： 针对直升机主减系统关键部件智能化故障诊断的迫切需求，从动力学建模的角度分析典型故障状态下系统的动态响应特性有助于深化故障机理和先进诊断算法的研究.采用集中参数法对直升机主减系统典型结构建立了考虑多非线性因素的故障动力学模型，并采用多体软件进行仿真建模与校验.仿真结果表明，啮合频率与局部故障特征频率调制现象清晰明显，行星轮周向响应明显大于平移响应.该类模型能有效揭示典型故障下的振动特性，为直升机传动系统故障诊断提供指导.

关键词: 直升机主减速器；典型部件；故障动力学建模；振动响应特性；频谱分析

Abstract: Aiming at the urgent demands of intelligent fault diagnosis for the key components of helicopter main reducers， the dynamic response characteristics of the system under the typical fault state are analyzed from the perspective of dynamic modeling， which is conducive to deepening the understanding of fault mechanism and advanced diagnosis algorithm. The fault dynamic models considering multi-nonlinear factors are developed for the typical components of a helicopter main reducer using the lumped-parameter method， and the multi-body software is applied for simulation modeling and verification. The results show that the modulation phenomenon between meshing frequency and local fault characteristic frequency is clear and the circumferential responses of the planet gear are obviously greater than the translational responses. these models can effectively reveal the vibration characteristics under typical faults and provide guidance for fault diagnosis of the helicopter transmission system.

Key words: helicopter main reducer; typical component; fault dynamic modeling; vibration response characteristics; spectrum analysis

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