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.
