A COMPUTATIONAL APPROACH FOR PRESSURE DISTRIBUTION AND ROTORDYNAMIC COEFFICIENTS OF JOURNAL BEARINGS WITH COMBINED RADIAL AND MISALIGNMENT MOTIONS  

作　　者：俞昊旻 宋建农 

机构地区：[1]Basic Sciences Department,CTU [2]Textile College of Shanghai University of Engineering Science

出　　处：《Journal of China Textile University(English Edition)》1991年第1期20-30,共11页

摘　　要：A computational approach is presented to handle an enlarged linear rotordynamic model whichsimultaneously includes both radial and misalignment motions.The interactive force and momentbetween the rotating and non-rotating members are modeled using an adaptation of the classicalReynolds lubrication equation for incompressible laminar isoviscous films.First,the governingequation is derived and the method of solution is introduced based on a 2-dimension,9-point cen-tral difference.Second,force and moment components are computed by numerical integration ofthe film pressure distribution.Finally,the rotordynamic coefficients are yielded according to thegeneralized force gradients.A computational approach is presented to handle an enlarged linear rotordynamic model which simultaneously includes both radial and misalignment motions.The interactive force and moment between the rotating and non-rotating members are modeled using an adaptation of the classical Reynolds lubrication equation for incompressible laminar isoviscous films.First,the governing equation is derived and the method of solution is introduced based on a 2-dimension,9-point cen- tral difference.Second,force and moment components are computed by numerical integration of the film pressure distribution.Finally,the rotordynamic coefficients are yielded according to the generalized force gradients.

关 键 词：REYNOLDS equation pressure distribution numerical integration motion generalized force journal BEARING rotordynamic COEFFICIENT 

分 类 号：N[自然科学总论]