Nonlinear Dynamic Analysis of Elastic Rotor with Disk on Cantilevered End Supported on Angular Contact Ball Bearings
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Дата
2016
Автори
ORCID
DOI
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
NTU "KhPI"
Анотація
The mathematical model of rotor nonlinear oscillations on angular contact ball-bearings has been developed.
The disk is fixed on the console end of the shaft. The shaft deflection and the elastic deformation of the bearings
have the same order. The free oscillations have been analyzed by nonlinear normal modes. The modes and
backbone curves of rotor nonlinear oscillations have been calculated. Oscillations are excited by the
simultaneous action of the rotor unbalance and vibration of supports. The frequency response, orbits and
Poincare maps have been constructed on the mode when rotating speed of the rotor is in the frequency range of
supports vibration. The analysis o f nonlinear dynamics of the rotor has shown that besides the main resonance
at low frequencies there are superresonant oscillations. The unstable modes saddle-node bifurcations leading to
beats are observed.
Опис
Ключові слова
rotor, angular contact ball-bearing, oscillations, nonlinear normal modes, backbone curve, frequency response, bifurcation
Бібліографічний опис
Filipkovskiy S. V. Nonlinear Dynamic Analysis of Elastic Rotor with Disk on Cantilevered End Supported on Angular Contact Ball Bearings / S. V. Filipkovskiy // Nonlinear Dynamics–2016 (ND-KhPI2016) : proceedings of 5th International Conference, dedicated to the 90th anniversary of Academician V. L. Rvachev, September 27-30, 2016 = Нелінійна динаміка–2016 : тези доп. 5-ї Міжнар. конф., 27-30 вересня 2016 р. – Kharkov : NTU "KhPI", 2016. – P. 74-81.