Reducing vibration amplitude by means of damping control in support elements of flexible rotors

0511148 - ÚT 2020 RIV CZ eng C - Conference Paper (international conference)
Zapoměl, Jaroslav - Pešek, Luděk - Viet, L.D. - Savin, L. - Kozánek, Jan
Reducing vibration amplitude by means of damping control in support elements of flexible rotors.
The International Colloquium Dynamics of Machines and Mechanical Systems with Interactions : DYMAMESI 2019. Prague: Institute of Thermomechanics CAS, 2019 - (Kozieň, M.; Zolotarev, I.; Pešek, L.), s. 1-4. ISBN 978-80-87012-70-3.
[DYMAMESI 2019. Cracow (PL), 05.03.2019-06.03.2019]
Institutional support: RVO:61388998
Keywords : accelerating rotors * vibration reduction * magnetorheological dampers * damping control
OECD category: Applied mechanics

Damping in the supports of rotors loaded by unbalance has influence on the vibration amplitude and critical speed of rotating machines. To minimize the oscillation amplitude during the rotor acceleration and running over the critical velocity, the damping in the support elements should be reduced. The reduction cannot be sudden but must be distributed in time. This requires to determine the proper moment of time when to start this manipulation and the time of its duration. This paper deals with investigation of the possibility of utilization of controllable squeeze film dampers lubricated by magnetorheological oil to accomplish this manipulation.
Permanent Link: http://hdl.handle.net/11104/0301733