南京航空航天大学学报2024，Vol.56Issue(2)：234-241,8.DOI:10.16356/j.1005-2615.2024.02.005
滑橇式直升机地面共振非线性时域仿真
Nonlinear Time-Domain Simulation for Skid Helicopter Ground Resonance
吴靖 1刘湘一 1宋山松1
作者信息
- 1. 海军航空大学航空基础学院,烟台 264001
- 折叠
摘要
Abstract
In order to study the influence of non-linear factors on skid helicopter ground resonance,a concise and effective equivalent planar model of helicopter ground resonance is established based on the characteristics of elastic skid landing gear and the connection type of fuselage damper.This model not only considers the non-linearity of blade damper and fuselage damper,but also considers the influence of the non-proportional damping of fuselage damper on fuselage inherent characteristics.The stable fuselage modal responses are excited by the excitation method,and the modal damping identification method is used to identify the modal damping of the transient response.The results show that the change in time domain is complex because of the non-linear and non-proportional fuselage damping.When the system is stable,the larger the amplitude of the steady-state response speed of the excited damper is,the more lagged its variation will be.关键词
滑橇式直升机/地面共振/非线性/非比例阻尼/时域仿真Key words
skid helicopter/ground resonance/non-linearity/non-proportional damping/time-domain simulation分类
航空航天引用本文复制引用
吴靖,刘湘一,宋山松..滑橇式直升机地面共振非线性时域仿真[J].南京航空航天大学学报,2024,56(2):234-241,8.
