Coupled forms of vibrations in rotating machinery

• Autorzy: Kiciński J.
• Języki publikacji: EN

Abstrakty

EN

The paper contains a study of mutual interactions, which occur between lateral, torsional and axial vibrations in multi-supported rotors operating in the non-linear range. The methods of modelling of the selected defects have been presented (e.g. rotor cracs and bearings misalignments). These defects have been regarded as the factors generating the coupled forms of vibrations. In the paper a part of work devoted to the influence of circumferential location of the cracs and kinetostatic and dynamic rotor deflection line on the system dynamical response has been presented. Applicability of coupled and phase vibration spectra analysis in diagnostics of such kind of defects has been indicated. Coupled forms of vibration are generally a results of different kinds of couplings taking place in the system and interactions between construction and material imperfections. Presented here as example can be rotor cracs and misalignment of the rotor line.

Słowa kluczowe

EN

vibrations; rotating machinery; slide bearings; computer analysis

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN
• Czasopismo: Transactions of the Institute of Fluid-Flow Machinery
• Rocznik: 2003
• Tom: nr 113
• Strony: 213--224
• Opis fizyczny: Bibliogr. 14 poz., rys., wykr.

Twórcy

autor

Kiciński J.

• Institute of Fluid Flow Machinery of the Polish Academy of Sciences, Fiszera 14, 80-952 Gdańsk, Poland, University of Warmia and Mazury, Olsztyn, Poland,

Bibliografia

• [1] Suh M.-W., Shim M.-B., Kim M.-Y.: Crack identification using hybrid neuro-genetic technique, J. of Sound and Vibration, 23 (4), 2000, 617-635
• [2] Nandi A., Neogy S.: Dynamic response of cracked beams and beams with an imperfect suport, Proc. Of VETOMAC-1 Conf, Bangalore, INDIA 2000, (on CD)
• [3] Rao J. S. Sreenivas R.: Dynamic analysis of misaligned rotor systems, Proc. of VETOMAC-1 Conference, Bangalore, INDIA, 2000, (on CD)
• [4] Krodkiewski J. M., Ding J., Zhang N.: Identification of unbalance change using a non-linear mathematical model for multi-bearing rotor systems, J. of Sound and Vibration 16(5), 1994, 685-698.
• [5] Ostachowicz W., Krawczuk M.: Coupled torsional and bending vibrations of a rotor with an open crack, Ingenieur-Archiv, 62, 1992, 191-201.
• [6] Knott J. F.: Fundamentals of Fracture Mechanics, Butterworths, London, 1973.
• [7] Chong-Won Lee, Kye-Si Won, Si-Kyoung Kim: Modal testing of rotors with rotating asymmetry, Proc. of VETOMAC-l Conference, Bangalore, INDIA, 2000, (on CD, pos. IP 13).
• [8] Chan D. S. H.: Nonlinear analysis of rotor dynamie instabilities in high-speed turbomachinery, Trans, of the ASME, J. of Engineering for Gas Turbines and Power, Vol. 118, January 1996, 122-129.
• [9] Adiletta G., Guido A. R., Rossi C: Nonlinear dynamics of a rigid unbalanced rotor in J. bearings. Part I: Theoretical Analysis, Nonlinear Dynamics, 1, 1997, 57-87.
• [10] Kiciński J.: Nonlinear model of vibration in rotor/bearings system - calculation algorithm, Machine Dynamics Problems, Vol. 15, 1996, 45-60.
• [11] Kiciński J., Drozdowski R., Materny P.: The nonlinear analysis of the effec, of support construction properties on the dynamie properties of multi-suppor rotor system. J. of Sound & Vibration, 20(4), 1997, 523-539.
• [12] Kiciński J., Drozdowski R., Materny P.: Nonlinear model of vibrations in a rotor-bearings systems, J. of Vibration & Control, Vol. 4, No. 5, 1998 519-540.
• [13] Kiciński J., Markiewicz - Kicińska A.: Coupled nonlinear vibrations in multi support rotors founded on slide bearing, Proc. of VETOMAC-l Conference Bangalore, INDIA, 2000, (on CD, pos. CP 047).
• [14] Kiciński J., Cholewa W.: Diagnostic System DT200-1 for Large Power (200 MW) Turbosets, IFFM Publishers, Gdańsk 1998.