Damping of resonance vibrations of gyroscopic systems by a liquid damper with elastic ribs
Authors: Chernikov S.A., Xue Y.
Published in issue: #2(86)/2019
DOI: 10.18698/2308-6033-2019-2-1851
Category: Aviation and Rocket-Space Engineering | Chapter: Aircraft Dynamics, Ballistics, Motion Control
The dynamic characteristics of weakly damped gyrosystems have pronounced resonant properties in the frequency range of nutation and elastic vibrations. Ring dampers, containing viscous fluid in a closed tube, are already widely used for damping vibrations of the spacecraft and gyroscopic systems. However, the efficiency of such a damper is limited. To further enhance the performance of the damper, the elastic slat screens are introduced. In this paper the possibility of damping of resonant vibrations of a gyroscopic system by a liquid damper with elastic ribs is considered. Approximate equations of the disturbed motion of a gyro system with a damper are found. A method for optimizing damper parameters is proposed. By comparing the obtained amplitude-frequency characteristics with those without elastic ribs, we can draw such a conclusion that introduction of an elastic connection between the object and the liquid rotation significantly improve the damping performance of resonant vibrations of gyroscopic systems. The obtained results for designing liquid damper can be used not only in the gyroscopic field, but also in other areas
References
[1] Chernikov S.A. Dinamika nelineynykh giroskopicheskikh sistem [Dynamics of nonlinear gyroscopic systems]. Moscow, Mashinostroenie Publ., 1981, 224 p.
[2] Marivani M. Numerical investigation of sloshing motion inside liquid dampers with and without submerged screens. PhD thesis. McMaster University, Hamilton, 2009, 150 p.
[3] Pavlov V.A. Zhidkostnoye giroskopicheskoye ustroystvo dlya stabilizatsii i dempfirovaniya obyektov s shestyu stepenyami svobody [Liquid gyroscopic device for stabilization and damping of objects with six degrees of freedom]. Patent no. RU 2595183 C1, publ. 20.08.2016, Bull. no. 23, 13 p.
[4] Bhuta P.G., Koval L.R. A viscous ring damper for a freely precessing satellite. International J. of Mechanical Sciences, 1966, vol. 8, pp. 383–395.
[5] Chang C.-O., Liu L.-Z. Dynamics and stability of a freely spinning body carrying a nutation damper. J. of the Chinese Institute of Engineers, 1994, vol. 17, no. 3, pp. 396–408.
[6] Chernikov S.A., Xue Yongjia. Izvestiya TulGU. Tekhnicheskiye nauki — Izvestiya Tula State University (Izvestiya TulGU), 2018, vol. 5, pp. 206–215.
[7] Bogoryad I.B., Lavrova N.P. Numerical Model of Liquid Flow in a Rotating Cylinder with Radially Arranged Elastic Ribs. Journal of Applied Mechanics and Technical Physics, 2013, vol. 54, no. 2, pp. 218–223.
[8] Lukovskiy I.A., Trotsenko V.A., Usyukin V.I. Vzaimodeystviye tonkostennykh uprugikh elementov s zhidkost
[9] Mikishev G.N., Rabinovich B.I. Dinamika tverdogo tela s polostyami, chastichno zapolnennymi zhidkost
[10] Pokusaev M.N. Dempfirovaniye krutilnykh kolebaniy v valakh sudovykh dizeley: modelirovaniye, eksperimentalnye i naturnye issledovaniya. Dis. ... d-ra tekhn. nauk [Torsional vibration damping in the shafts of ship diesel engines: modeling, experimental and field studies. Thesis for the degree of Doctor of Engineering Sciences]. Astrakhan, 2005, 345 p.
[11] Chernikov S.A., Xue Yongjia. Dynamic damping of forced vibrations of gyroscopic system by damper with liquid flywheel. Inzhenernyy zhurnal: nauka i innovatsii — Engineering Journal: Science and Innovation, 2017, issue 10. DOI: 10.18698/2308-6033-2017-10-1685
[12] Chernikov S.A. Expansion of the suppression band of a vibroprotective system by a feedback dynamic damper. Journal of Machinery Manufacture and Reliability, 2015, vol. 44, no. 5, pp. 439–444.