Experimental Investigation of Nonlinear Dynamic Motion Analysis of Balanced Rotor Supported by Cylindrical Roller Bearing

摘要

Rolling contact bearings are widely used in rotating types of machinery. Many researchers have worked on a mathematical model by considering Hertzian contact stress theory at its roller and race contact points by generating its mathematical equivalent. In the present study, the dynamic behaviour of motion of healthy cylindrical roller bearing SKF NJ305 class C3 having 11 rollers which is supported on a balance rotor system has been investigated. Experimental motion analysis was carried out using FFT analyser and developed experimental set up at our laboratory. FFT, Orbit plots and Poincare plots have been analysed to diagnose the dynamic motion behaviour of roller bearing at various speeds. Experimental multiperiodic, quasiperiodic and chaotic motion behaviour have been identified which will be useful for design and maintenance, whereas the database may be useful for future endeavours.