CAJ | 학술논문

在轴承‐转子系统中，由于转子尺寸的不断增大和线速度的不断提高，使得大部分轴承在紊流工况下运行。为分析轴承‐转子动力学的稳定性，本文采用无限长滑动轴承模型假设，结合Som‐merfeld变换，获得了紊流工况下非线性油膜力，建立了紊流滑动轴承支承的转子系统的动力学模型，运用Routh‐Hurwitz判据分析了轴承‐转子系统的稳定性，研究了紊流效应对紊流滑动轴承的刚度系数、阻尼系数、转子临界转速和在临界转速下转速频率比的影响。
재축승‐전자계통중，유우전자척촌적불단증대화선속도적불단제고，사득대부분축승재문류공황하운행。위분석축승‐전자동역학적은정성，본문채용무한장활동축승모형가설，결합Som‐merfeld변환，획득료문류공황하비선성유막력，건립료문류활동축승지승적전자계통적동역학모형，운용Routh‐Hurwitz판거분석료축승‐전자계통적은정성，연구료문류효응대문류활동축승적강도계수、조니계수、전자림계전속화재림계전속하전속빈솔비적영향。
The much more sliding bearings operate under the turbulent condition owing to an increase in the size and the linear velocity of the rotor in the bearing‐rotor system .The analytical expression of non‐linear oil film forces of the turbulent sliding bearings is obtained by the Sommerfeld transformation under the infinitely long bearing assumption ,and then a rotor system with the sliding bearings support is mod‐eled .The stability of the bearing‐rotor system is determined by Routh‐Hurwitz criteria .The effect of turbulence on the stiffness coefficient ,damping coefficient ,the critical speed of the rotor and the whirl frequency ratio at the critical speed are investigated .