CAJ | 학술논문

基于流体动力润滑理论，分析研究了浮环轴承在稳定动态工况下浮环内外层油膜的压力组成、分布及承载力状况。首先根据浮环轴承的润滑机理，推导出浮环内外油膜压力的动载Reynolds方程，然后在有限长及雷诺边界条件下，通过运用有限差分法结合Matlab编程求解模拟出内外油膜压力的分布，并进一步研究了油膜压力、承载力随偏心率及宽径比变化的关系。研究表明：稳定动态工况下浮环轴承油膜压力由旋转效应和挤压效应叠加组成，且随时间作周期性的变化；偏心率越大油膜压力及承载力越大；宽径比越大油膜压力和承载力也越大；且浮环内层油膜较外层油膜的压力和承载力大。
기우류체동력윤활이론，분석연구료부배축승재은정동태공황하부배내외층유막적압력조성、분포급승재력상황。수선근거부배축승적윤활궤리，추도출부배내외유막압력적동재Reynolds방정，연후재유한장급뢰낙변계조건하，통과운용유한차분법결합Matlab편정구해모의출내외유막압력적분포，병진일보연구료유막압력、승재력수편심솔급관경비변화적관계。연구표명：은정동태공황하부배축승유막압력유선전효응화제압효응첩가조성，차수시간작주기성적변화；편심솔월대유막압력급승재력월대；관경비월대유막압력화승재력야월대；차부배내층유막교외층유막적압력화승재력대。
Based on the theory of hydrodynamic lubrication, the inner/outer oil film pressure, pressure composition and load-carrying capacity of floating-ring bearing in the steady dynamic state were researched. According to the lubrication mechanism of floating-ring bearing, dynamic load Reynolds equation about inner/outer oil film pressure was deduced at first, then film pressure distribution at the finite-length and Reynolds boundary conditions was solved and simulated by using finite difference method and Matlab. Moreover, the relationship of film pressure and load-carrying capacity vary with the eccentricity and the ratio of width to diameter were also studied. Research indicates that film pressure of floating-ring bearing consists of rotation and extrusion effect , and it changes periodically with time in the steady dynamic state.The higher the eccentricity or the ratio of width to diameter, the greater the film pressure and the load-carrying capacity. The pressure and load-carrying capacity of inner oil film are higher than the outer oil film.