The application of dichotomy in equilibrium position of journal bearing

[摘要] The fluid lubricant force in the journal bearing is an important factor for the stability and dynamic characteristics of rotating machine. In order to obtain the dynamic coefficients of journal bearing, the equilibrium position must be known for further calculation. In this paper, the Reynolds equation is solved by finite difference method and the dichotomy is applied to acquire the equilibrium position of journal bearing by means of double loop. The effects of length, radius and clearance of journal bearing on the equilibrium position are also researched. The calculated results show that the dichotomy is an effective method for the equilibrium position of journal bearing and the geometry parameters play an important effect on the equilibrium position.

[发布机构] Institute of Chemical Machinery, Zhejiang University, Hangzhou; 310027, China^1;Institute of Water Resources and Hydro-electric Engineering, Xi'An University of Technology, Xi'an; 710048, China^2

[效力级别] 工业技术 [学科分类] 工业工程学

[关键词] Double-loop;Dynamic characteristics;Dynamic coefficient;Equilibrium positions;Geometry parameter;Lubricant forces;Rotating machine