Nonlinear Analysis of Dynamic Characteristics of Cylindrical Bearing Oil Film

Furukawa, Toyoaki; Matsumoto, Iwao; Esaki, Jinro

doi:10.1299/jsmec1993.39.577

Search citation statements

Order By: Relevance

Paper Sections

Select...

Theoretical Analysis1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

1999

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Methods to Obtain Nonlinear Film Force (a) Approximate method (Furkawa et al, 1994; Wang and Zhang, 1993). Reynolds equation is reduced by using long or short bearing assumption or using nonlinear coefficients that are defined as linear oil film model.…”

Section: Theoretical Analysismentioning

confidence: 99%

Numerical Simulation of Nonlinear Oil Film Forces ofTilting‐Pad Guide Bearing in Large Hydro‐unit

Ma¹,

Xin-zhi²

1999

International Journal of Rotating Machinery

View full text Add to dashboard Cite

A new numerical method is proposed for predicting the nonlinearity of tilting-pad guide bearing oilfilm force in the rotor-bearing system in a large hydro-unit. Nonlinear displacement and velocity of the journal center, as well as nonlinear tilting angles and angular velocities of the pads in non-stationary Reynolds equation are taken into account. This method is also suited for other small rotor-bearing system. As an example, the response due to a momentarily created unbalance is Calculated. The nonlinear motion patterns of the pad and journal whirling orbit are obtained. Finally, the nonlinear orbit is compared to the linear one that could be calculated from linear stiffness and damping coefficients. It is shown that there are important differences between those two orbits and that the nonlinear simulation is more accurate.

show abstract

Section: Theoretical Analysismentioning

confidence: 99%