Dynamic Characteristics of TEHD Tilt Pad Journal Bearing Simulation Including Multiple Mode Pad Flexibility Model
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An approach for incorporating the heat transfer and elastic deformation effects intodynamic coefficient calculation is presented. A global analysis method is used, whichfinds the equilibrium pad tilt angles at each eccentricity position and includes crossfilmvariable viscosity, heat transfer effects in the lubricant, elastic deformation, heat conduction effects in the pads, and elastic deformation effect in the pivots.Deflection modes are used to approximate deformation of the top surface of thepads. The dynamic coefficients of a single pad are calculated at the equilibriumstate of the bearing, based on numerical perturbation with respect to the bearingdegrees of freedom. These include journal position, pad rotation, pivot deformation, and modal coordinates. The stiffness and damping coefficients are calculated andshow very good agreement with experimental and numerical results from the existing literature. © 1995 by ASME.
author list (cited authors)
Kim, J., Palazzolo, A., & Gadangi, R.