机动飞行环境下双转子系统主共振特性分析

陈毅; 侯磊; 林荣洲; 杨洋; 陈予恕

doi:10.7527/S1000-6893.2020.24841

航空学报 >

2022 , Vol. 43 >Issue 1: 224841 - 224841

DOI: https://doi.org/10.7527/S1000-6893.2020.24841

固体力学与飞行器总体设计

机动飞行环境下双转子系统主共振特性分析

陈毅 ,
侯磊 ,
林荣洲 ,
杨洋 ,
陈予恕

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1. 哈尔滨工业大学航天学院, 哈尔滨 150001;
2. 西南交通大学力学与工程学院应用力学与结构安全四川省重点实验室, 成都 610031

收稿日期: 2020-10-09

修回日期: 2020-12-04

网络出版日期: 2020-12-03

基金资助

国家自然科学基金（11972129，11602070，11702228）；国家科技重大专项（2017-IV-0008-0045）；应用力学与结构安全四川省重点实验室开放课题基金（SZDKF-201903）

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Analysis of primary resonance characteristics of dual-rotor system in maneuvering flight environment

CHEN Yi ,
HOU Lei ,
LIN Rongzhou ,
YANG Yang ,
CHEN Yushu

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1. School of Astronautics, Harbin Institute of Technology, Harbin 150001, China;
2. Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

Received date: 2020-10-09

Revised date: 2020-12-04

Online published: 2020-12-03

Supported by

National Natural Science Foundation of China(11972129, 11602070, 11702228); National Science and Technology Major Project(2017-IV-0008-0045); the Opening Project of Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province(SZDKF-201903)

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摘要

以双转子系统为研究对象，综合考虑高低压转子双频不平衡激励、中介轴承间隙以及机动载荷，通过Lagrange方程，建立了水平盘旋机动飞行环境下双转子系统动力学模型，研究了双转子系统的主共振特性，分析了水平盘旋机动载荷对双转子系统主共振特性的影响规律，探讨了机动飞行环境下中介轴承间隙对双转子系统主共振特性的影响规律。研究结果表明，双转子系统存在振动突跳和双稳态等典型的非线性动力学行为，水平盘旋机动载荷增大会对双转子系统产生"刚度增强效应"，中介轴承间隙增大会对双转子系统产生"刚度弱化效应"。

关键词： 机动飞行; 双转子系统; 主共振; 振动突跳; 双稳态

本文引用格式

陈毅 , 侯磊 , 林荣洲 , 杨洋 , 陈予恕 . 机动飞行环境下双转子系统主共振特性分析[J]. 航空学报, 2022 , 43(1) : 224841 -224841 . DOI: 10.7527/S1000-6893.2020.24841

Abstract

This paper focuses on the primary resonance analysis of a dual-rotor system considering the two rotor imbalanced excitations with different rotating speeds, the radial clearance of the inter-shaft bearing and the maneuver load. The vibration equations of the dual-rotor in the hover flight environment are formulated using the Lagrange equation. The primary resonance responses are then obtained by numerical methods, followed by the investigation into the primary resonance characteristics under the influence of the maneuver load and the clearance of inter-shaft bearing. The results reveal that the dual-rotor system has some typical nonlinear dynamic behaviors, such as vibration jump and bi-stable phenomenon. The maneuver load exerts a "stiffness enhancement effect" while the inter-shaft bearing clearance a "stiffness weakening effect" on the dual rotor system.

Key words： maneuvering flight; dual-rotor system; primary resonance; vibration jump; bi-stable

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