Squeeze Oil-Film Fluid-Structure Interaction Analysis by the Finite Element Method

Abstract:

The squeeze oil-film dampers have been applied to damp out vibration in linear guideway systems of CNC machine tools. An accurate estimate of squeeze oil-film damping effects is significant to predict the dynamic performance of rolling guidance systems. This paper presents a finite element method to solve the fluid-structure interaction problem of squeeze oil-film dampers. Three-node Mindlin plate element is used in the structure domain model. The oil-film behavior is provided by the Reynolds equation of lubrication theory. Both the structural domain and fluid domains are discretized by finite element method. The frequency response functions of coupled systems are derived by considering the oil-film pressures and the structure displacements on the boundary as the coupling conditions. The validity of the frequency response functions is verified by a simple example. It shows that the oil-film thickness has significant influence on the frequency response.

• Periodical: Applied Mechanics and Materials (Volumes 401-403)
• Pages: 446-449
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.401-403.446
• Online since: September 2013
• Authors: Jie Chen, Neng Xi, Jia Jun Yang, Mei Ling Zhao
• Keywords: Finite Element Method (FEM), Fluid-Structure Coupling Analysis, Linear Guideway System, Reynolds Equation, Squeeze Oil-Film Damping

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