Evaluation Of Dynamic Behavior Of A Rotor-Bearing System In Operating Conditions

Most flexible rotors can be considered as beam-like structures. In many cases, rotors are modeled as one-dimensional bodies, made basically of beam-like shafts with rigid bodies attached to them. This approach is typical of rotor dynamics, both analytical and numerical, and several rotor dynamic codes, based on the finite element method, follow this trend. In this paper, a finite element model based on Timoshenko beam elements is utilized to analyze the lateral dynamic behavior of a certain rotor-bearing system in operating conditions.
{"references":["Yi. Chiu, D. Chen, The coupled vibration in a rotating multi-disk rotor\nsystem, International Journal of Mechanical Sciences.53 (2011) 1–10.","R. Whalley, A. Abdul-Ameer, Contoured shaft and rotor dynamics,\nMechanism and Machine Theory. 44 (2009) 772–783.","A. Lazarus, B. Prabel, D.Combescure, A 3D finite element model for the\nvibration analysis of asymmetric rotating machines, Journal of Sound\nand Vibration, 329 (2010) 3780–3797.","B.O. Al-bedoor, Dynamic model of coupled shaft torsional and blade\nbending deformations in rotors, Comput, Methods Appl. Mech. Engrg,\n169 (1999) 177-190.","S.P. Harsha, K. Sandeep, R. Prakash, The effect of speed of balanced\nrotor on nonlinear vibrations associated with ball bearings, International\nJournal of Mechanical Sciences. 45 (2003) 725–740.","D. Laxalde, F. Thouverez, J.P. Lombard, Dynamical analysis of multistage\ncyclic structures, Mechanics Research Communications. 34 (2007)\n379–384.","D. Laxalde, J. Lombard, F. Thouverez, Dynamics of multi-stage bladed\ndisks systems, Journal of Engineering for Gas Turbines and Power. 129,\n4 (2007) 1058-1064.","D. Laxalde, Ch. Pierre, Modeling and analysis of multi-stage systems of\nmistuned bladed disks, Computers and Structures. 89 (2011) 316–324.","E. Chatelet, F. D'Ambrosio, G. Jacquet-Richardet,Toward global\nmodeling approaches for dynamic analyses of rotating assemblies of\nturbomachines, Journal of Sound and Vibration. 282 (2005) 163–178.\n[10] M.H. Jalali, M. Ghayour, S.Ziaei-Rad, B. Shahriari, Dynamic analysis of\na high speed rotor-bearing system, Measurement, 53, (2014) 1-9.\n[11] S. Jeon, H. Kwak, S. Yoon, J. Kim, Rotor dynamic analysis of a high\nthrust liquid rocket engine fuel (Kerosene) turbo pump, Aerospace\nScience and Technology, 26 (2013) 169-175.\n[12] B. Yu, X. Yu, Q. Feng, Simple modeling and modal analysis of\nreciprocating compressor crankshaft system, Proceedings of\nInternational Compressor Engineering Conference, Perdue university,\n2010.\n[13] G. Genta, Dynamics of Rotating Systems, Mechanical Engineering\nSeries, Springer, 2005."]}