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A Theoretical Study on the Influence of Frequency on the Dynamic Characteristics of Air Film

机译：频率对空气膜动态特性影响的理论研究

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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.
机译：开发了一种通用方法来处理空气膜的可压缩性，并在整个频率范围内预测空气润滑轴承的线性动态刚度和阻尼系数。数值结果表明，刚度和阻尼系数的功能不仅是诸如偏心和姿态角度的静态参数，而且是干扰频率。即使频率接近零或正无穷大，也是连续的并且趋于趋于某些值。通常，动态刚度的直接术语随着频率的增加而增加，而交叉耦合术语倾向于当频率变为无限时的相等值，并且所有阻尼系数在较高频率区域中减少并在时消失频率接近正无穷大。

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