Influence of technological deviations on the basic operational characteristics of hydrodynamic bearings

15th International Scientific and Engineering Conference Hermetic Sealing, Vibration Reliability and Ecological Safety of Pump and Compressor Machinery HERVICON+PUMPS-2017

机械制造;生态环境科学

Tarasevych, Y.^1 ; Savchenko, I.^1 ; Sovenko, N.^1

General Mechanics and Machine Dynamics Department, Sumy State University, 2 Rymskogo-Korsakova st., Sumy

40007, Ukraine^1

关键词: Closed-form expression;    Hydrodynamic bearings;    Hydrodynamic forces;    Lubricated journal bearings;    Operating parameters;    Operational characteristics;    Probabilistic characteristics;    Surface forms;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/233/1/012047/pdf
DOI  :  10.1088/1757-899X/233/1/012047

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The main purpose of this paper is to define a methodology to determine the analytical approximate closed-form expression of probabilistic characteristics of load capacity of liquid-lubricated journal bearings in the case of a steady flow regime. Influence of random change of basic geometrical parameters of journal bearings (gap value and eccentricity) on the load capacity of bearing is considered. It is shown that the actual value of hydrodynamic force in bearing can substantially differ from a calculation one. The got results confirm the necessity of application of such approach at consideration both geometrical and operating parameters of bearing, for example, axes misalignment, deviation of surface form, roughness and others, which have casual nature too.