Investigation of radial misalignment influence on dynamics of precise rotor system

  • B. Spruogis Kauno technologijos universitetas
  • V. Turla
  • A. Jakštas


After presentation of the classification of vibra-tion damping devices for rotation systems developed in Vilnius Gediminas technical university, the problems con-nected with dynamics of rotor system at certain radial mis-alignment of shafts are investigated in the offered work. As object of research is the system of two shafts connected by elastic centrifugal ring coupling. It is established, that in the coupling, connecting radially misaligned shafts, an internal resistance moment to rotation is arising. Using the principle of d’Alamber for rotary movement, the differen-tial equation describing rotation of the second shaft is worked out. The received solutions show, that rotational fluctuations arise in rotating misaligned system. The fre-quency of fluctuations is double the rotation frequency. Results of investigation were applied for rotational vibra-tions reducing of rotor systems.