Paper Title:
A Theoretical Study on the Influence of Frequency on the Dynamic Characteristics of Air Film
  Abstract

A general method is developed to deal with the compressibility of air film and to predict the linear dynamic stiffness and damping coefficients of air-lubricated bearings over the whole range of frequency. Numerical results reveal that both stiffness and damping coefficients are functions of not only the static parameters such as eccentricity and attitude angle, but also the frequency of disturbance. The coefficients are continuous and tend to certain values even when the frequency approaches zero or positive infinity. In general, the direct terms of the dynamic stiffness increase with the increase of the frequency, while the cross-coupling terms tend to an equal value when the frequency becomes infinite, and all the damping coefficients decrease in the higher frequency region and vanish when the frequency approaches positive infinity.

  Info
Periodical
Key Engineering Materials (Volumes 462-463)
Edited by
Ahmad Kamal Ariffin, Shahrum Abdullah, Aidy Ali, Andanastuti Muchtar, Mariyam Jameelah Ghazali and Zainuddin Sajuri
Pages
817-824
DOI
10.4028/www.scientific.net/KEM.462-463.817
Citation
S. M. Qi, Y.S. Ho, H. P. Geng, L. Yu, "A Theoretical Study on the Influence of Frequency on the Dynamic Characteristics of Air Film", Key Engineering Materials, Vols. 462-463, pp. 817-824, 2011
Online since
January 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Tie Neng Guo, Ling Li, Li Gang Cai, Zhi Feng Liu
Abstract:The stiffness and damping of mechanical joint are modeled by the zero thickness joint interfaces theory. The method is applied to analyze the...
198
Authors: Qun Yan Tan, Xin Zhao, Xue Bin Zhang
Abstract:The two methods of artificial damping and artificial stiffness are developed in dynamic explicit FEA code for ring rolling. Advantages and...
326
Authors: Zhao Wang Xia, Xiao Min Qi, Hua Bing Wen
Chapter 3: Mechatronics and Automation
Abstract:This work presents a test model of a vibration isolation system with magneto-rheological (MR) damper, and the Bingham model to describe the...
2190
Authors: Jin Feng Wu, Zhi Jun Zhang, Xiao Zhen Li
Chapter 3: Civil Engineering
Abstract:The vibration theory of beam and D’Alembert principle are used to set up vehicle-bridge system for a simply-supported girder bridge under the...
919