Tilting-Pad Bearings: Measured Frequency Characteristics Of Their Rotordynamic Coefficients

This paper reviews a long standing issue related to the stiffness and damping coefficients of tilting-pad (TP) bearings; namely, What is the nature of their frequency dependency? A research project was implemented at the Turbomachinery Laboratory (TL) at Texas AM Warner and Soler raised the issue in 1975. Figure 1 shows a spring in series with a fluid-film model that produces frequency-dependent stiffness and damping coefficients. Figure 1. Flexible support of a parallel spring-damper assembly (Childs, 2002)

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