Journal of Mechanical Design and Vibration
ISSN (Print): 2376-9564 ISSN (Online): 2376-9572 Website: http://www.sciepub.com/journal/jmdv Editor-in-chief: Shravan H. Gawande
Open Access
Journal Browser
Go
Journal of Mechanical Design and Vibration. 2014, 2(1), 25-30
DOI: 10.12691/jmdv-2-1-3
Open AccessArticle

Active Vibration Control in Engine Rotors using Electromagnetic Actuator System

M. Rajasekhar1, and Dr. J. Srinivas2

1Department of Mechanical Engineering, Gitam Institute of Technology, Gitam University, Visakhapatnam, India

2Department of Mechanical Engineering, National Institute of Technology Rourkela, Rourkela, Orissa, India

Pub. Date: May 25, 2014

Cite this paper:
M. Rajasekhar and Dr. J. Srinivas. Active Vibration Control in Engine Rotors using Electromagnetic Actuator System. Journal of Mechanical Design and Vibration. 2014; 2(1):25-30. doi: 10.12691/jmdv-2-1-3

Abstract

This paper presents active amplitude control methodology of a turbocharger rotor using the electromagnetic actuator design. Vibrations in such high-speed engine rotors are inevitable especially while crossing the critical operating speeds. From durability considerations, the rolling element and journal bearings are now-a-days replaced by compliant gas bearings. In present work, the rotor is discretized as a finite element model comprising three Timoshenko beam elements with consideration of gyroscopic effects. Unbalance and gravity are considered as the external forces. Dynamics response of the rotor is obtained by solving resultant dynamic equations using implicit time-integration scheme. An in-house program developed first computes critical operating states and with the help of existing theory of electromagnetic actuators, the vibration amplitudes of system are minimized by providing calculated additional external forces. Control led vibration amplitudes at a disk node is illustrated.

Keywords:
turbocharger rotor finite element modelling electromagnetic actuator active vibration control air foil bearing

Creative CommonsThis work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

References:

[1]  Iordanoff,I., Said,B.B., Mezianne.A. and Berthier, Y, “Effect of internal friction in the dynamic behaviour of aerodynamic foil bearings”, Tribology International, 41 (5). 387-395.
 
[2]  Crosby, W.A., “The incompressible lubrication of a ridged foil Bearing”, Wear, 113 (2). 247-266.
 
[3]  Reddy, D.S.K., Swarnamani, S. and Prabhu, B.S, “Analysis of aerodynamic multi leaf foil journal bearings”, Wear, 209 (1-2). 115-122.
 
[4]  Andres, L.S, and Kim, T.H, “Forced nonlinear response of gas foil bearing supported rotors” Tribology International, 41(8). 704–715.
 
[5]  Kim, D. and Park, S, “Hydrostatic air foil bearings: Analytical and experimental investigation” Tribology International, 42(3). 413–425.
 
[6]  Zhou, Q, Hou, Y. and Chen, C, “Dynamic stability experiments of compliant foil thrust bearing with viscoelastic support”, Tribology International, 42(5). 662-665.
 
[7]  Yu, H., Shuangtao, C., Rugang, C., Qiaoyu, Z. and Hongli, Z. “Numerical study on foil journal bearings with protuberant foil structure” Tribology International, 44(9). 1061-1070.
 
[8]  Song, J. and Kim, D., “Foil gas bearing with compression springs: Analyses and experiments” Transactions of the ASME, Tribology, 129 (3). 628-639.
 
[9]  Dykas, B. and Howard, S.A, “Journal Design Considerations for Turbo-machine Shafts Supported on Foil Air Bearings”, Tribology Transactions, 47 (4). 508-516.
 
[10]  Bhore., S.P. and Darpe, A.K, “Investigations on characteristics of micro/meso scale gas foil journal bearings for 100–200 W class micro power systems using first order slip velocity boundary conditions and the effective viscosity model”, Microsyst Technol, 19 (4). 509-523.
 
[11]  Bhore., S.P. and Darpe, A.K, “Nonlinear dynamics of flexible rotor supported on the gas foil journal bearings” Journal of Sound and Vibration, 332 (20). 5135-5150.
 
[12]  Tonoli, A., Amati, N., Bonfitto, A., Silvagni, M., Staples, B. and Karpenko, E., “Design of Electromagnetic Dampers for Aero-Engine Applications” Journal of Engineering for Gas Turbines and Power, Trans.ASME, 132 (11). 112501-1-11.
 
[13]  Fan, C.C. and Pan, M.C, “Active elimination of oil and dry whips in a rotating machine with an electromagnetic actuator” International Journal of Mechanical Sciences, 53(2). 126-134.
 
[14]  Yu, Z., Meng, L.T. and King, L.M. “Electromagnetic bearing actuator for active vibration control of a rotor” Proceedings of the IMechE, Part C: Journal of Mechanical Engineering Science, 212 (1). 705-716.
 
[15]  Sugai, T., Inoue T. and Ishida, Y. “Nonlinear theoretical analysis of contacting forward whirling vibration of a rotating shaft supported by a repulsive magnetic bearing” Journal of Sound and Vibration, 332 (11). 2735-2749.
 
[16]  Fan, C.C. and Pan, M.C. “Fluid-induced instability elimination of rotor-bearing system with an electromagnetic exciter” International Journal of Mechanical Sciences, 52(4). 581-589.
 
[17]  Tain, L., Wang, W.J. and Peng, Z.J. “Effect of bearing outer clearance on the dynamic behaviours of the full floating ring bearing supported turbocharger rotor” Mechanical Systems and Signal Processing, 31 (1). 155-175.