Dynamic Response Analysis of Air Rudder Rotating Around an Axis
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.
air ruddernonlinear dynamicsfriction torquehysteresisclearance
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