Parametric study of turbine blade platform friction damping using the lumped parameter analysisThe hardware configuration used in the present study of turbine blade planform friction damping, by means of the lumped parameter analysis, is the first turbine stage of the Space Shuttle Main Engine's High Pressure Fuel Turbopump. The analysis procedure solves the nonlinear equations of motion for a turbine blade that is acted on by a platform friction damper, using an iterative matrix method. Attention is given to the effects on blade deflection response of variations in friction coefficient, the normal force on the friction surface interface, blade hysteretic damping, the blade-to-blade phase angle of the harmonic forcing function, and the amplitude of the forcing function.
Document ID
19840064159
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dominic, R. J. (Dayton, University Dayton, OH, United States)