Showing papers by "S. P. Harsha published in 2005"
TL;DR: In this article, a non-linear dynamic analysis of an unbalanced rotor supported by roller bearings has been made and the results show the appearance of instability and chaos in the dynamic response as the speed of the rotor bearing system is changed.
Abstract: In this paper, the non-linear dynamic analysis of an unbalanced rotor supported by roller bearings has been made. The non-linearity in the rotor bearing system is due to Hertzian contact, unbalanced rotor effect and radial internal clearance. The system can excite bi-periodically by the varying compliance frequency and the rotational frequency. The results show the appearance of instability and chaos in the dynamic response as the speed of the rotor-bearing system is changed. Period doubling and mechanism of intermittency have been observed that lead to chaos. Poincare maps, phase plots, time displacement responses and FFT are used to elucidate and illustrate the diversity of the system behavior.
87 citations
TL;DR: In this paper, the response of a balanced rigid rotor supported by rolling element bearings is studied, where the contacts between the balls and races are considered as non-linear springs, whose stiffness is obtained by using Hertzian elastic contact deformation theory.
64 citations