Affiliation:
1. Islamic University of Technology, Board Bazar, Gazipur 1704, Bangladesh e-mail:
Abstract
Rotor-to-stator or rotor-to-guide rubbing in rotating machines is a serious problem. The contact (rub and impact) between the rotor and the guide creates an excessive vibration which may lead to permanent damage of the mechanical system. In the present work, the rubbing phenomenon between the rotor and the guide is investigated by simulation and experiment. Two different types of clearance bearings are implemented, which are based on circular and lemon-type guides. Rigorous mathematical models for the lemon-type guide as well as for the traditional circular clearance bearing are derived. Then, a Jeffcott rotor model is simulated for the investigation of the rubbing behavior for the two types of bearings. The numerical model is developed in matlab simulink. For different clearances and friction levels between rotor and guide, and several initial conditions, the rubbing phenomena are studied and evaluated. Finally, a comparison between experimental and simulation work is carried out to validate the overall scenarios in this research work. Results indicate that the lemon-type bearing can reduce the likelihood of sustained rubbing, compared with the circular clearance bearing, for the considered test cases.
Reference30 articles.
1. Forward and Backward Whirling due to Contact and Its Prevention;Ishida,2003
2. Li, Y.
, 2011, “Modeling and Performance Investigation of a Rotor With Dissimilar Bearing Support System,” M.Sc. thesis, Cleveland State University.
3. Interaction of a Whirling Rotor With a Vibrating Stator Across a Clearance Annulus;Black;J. Mech. Eng. Sci.,1968
4. Stator Whirl With Rotors in Bearing Clearance;Ehrich;ASME J. Eng. Ind.,1967
5. Partial Lateral Rotor to Stator Rubs;Muszynska;ImechE,1984
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献