Volume 9 Issue 2
Effect of the Initial Deflection on Vibration Characteristics of the Rub-Impact Rotor System
Jiuhong Jia andTianqi Hang
Key Laboratory of Pressure Systems and Safety, Ministry of Education East China University of Science and Technology, 200237 Shanghai, P. R. China
*Author to whom correspondence should be addressed.
Abstract
Based on an elastic rub-impact model, a dynamic model of a rubbing rotor system with an initial deflection was set up and motion equations were derived and solved numerically. Poincaré maps, rotor orbits and bifurcation diagrams were drawn to investigate the effects of the initial deflection distance and the initial deflection angle on the vibration features of the rub-impact rotor system. The paper concluded that the initial deflection had great influence on the motion forms of the rubbing rotor system.
Keywords: Rotor System; Rub-impact; Initial Deflection; Vibration Features