Open AccessStudy on nonlinear dynamics of the marine rotor-bearing system under yawing motion
Author(s) -
Yangxu Shi,
Ming Li
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1676/1/012156
Subject(s) - bearing (navigation) , rotor (electric) , motion (physics) , nonlinear system , moment of inertia , inertia , control theory (sociology) , dynamics (music) , helicopter rotor , moment (physics) , physics , classical mechanics , computer science , acoustics , artificial intelligence , control (management) , quantum mechanics , astronomy
After considering the yawing motion, the dynamic model of the marine rotor-bearing system is developed on the short bearing theory. Theoretical analysis shows that the yawing motion causes gyroscopic moment and strong nonlinear time-varying transport inertia moment. The dynamic characteristics of the rotor-bearing system with and without yawing motion are compared. The result shows that the yawing motion significantly affects the dynamic characteristics of the rotor-bearing system, which makes the rotor system be dominated by the quasi-period. The yawing motion makes the rotor amplitude increase significantly at low speed. Finally, under the influence of yawing motion, the dynamic characteristic of the rotor shows chaos at high speed.