Experimental Verification and Nonlinear Dynamic Response Analysis of a Rolling Element Bearing with Localized Defects

Abstract In this paper, the dynamic behavior of rolling element bearings with localized faults on inner and outer rings is investigated. A nonlinear mathematical model developed five degrees freedom considering rotor unbalance. bearing model, nonlinearity caused by Hertzian contact forces radial internal clearance. The fourth-order Runge–Kutta technique used to solve coupled equations motion numerically. Nonlinear vibration response housing can be obtained in both time frequency domains. An experimental verification numerical presented where measurements for defective ball are compared results. Envelope spectra results show similar that measured signals. parametric analysis conducted investigate effect system parameters using waveforms, orbit plots, bifurcation diagrams. demonstrate shows periodic, quasi-periodic chaotic motions because varying rotational speeds defect width. proposed contributes toward improved design better health monitoring practice.