空气舵绕轴转动动力学响应分析
Dynamic Response Analysis of Air Rudder Rotating Around an Axis
隋鑫 1马之馨 1刘博 1马志赛 2王晓宇1
作者信息
- 1. 中国运载火箭技术研究院,北京,100076
- 2. 天津大学,天津,300350
- 折叠
摘要
针对空气舵绕舵轴转动动力学模型,考虑含转动间隙、Stribeck效应的干摩擦模型,建立含间隙、干摩擦空气舵转动受迫振动方程,应用平均法解析分析转动方向幅频特性,研究不同摩擦力矩系数及外激励频率对绕轴振动幅频响应的影响.结果表明:外激励频率变化时,绕轴振动幅频曲线呈现软硬不同的迟滞非线性特性,频域出现多解频带,且频域多解频带随摩擦力矩系数的增大而增大.
Abstract
This article focuses on the dynamic model of air rudder rotation around the rudder shaft,considering a dry friction model with rotational clearance and Stribeck effect,and establishing the forced vibration equation of air rudder rotation with clearance and dry friction. The average method is applied to analyze the amplitude frequency characteristics of the rotational direction. The influence of different friction torque coefficients and external excitation frequencies on the amplitude frequency response of axial vibration is studied. The results show that when the external excitation frequency changes,the amplitude frequency curve of the vibration around the axis exhibits hysteresis nonlinear characteristics of different softness and hardness. Multiple solution frequency bands appear in the frequency domain,and the frequency domain multiple solution frequency bands increase with the increase of the friction torque coefficient.
关键词
空气舵/非线性/摩擦力矩/迟滞/间隙Key words
air rudder/nonlinear dynamics/friction torque/hysteresis/clearance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据