Evaluation of Shear Mounted Elastomeric Damper,
MECHANICAL TECHNOLOGY INC LATHAM N Y
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The safe and reliable operation of high speed rotating machinery often requires the use of devices that dissipate undesirable rotor vibrations. As an alternative to the more conventional squeeze film bearing damper designs, a Viton-70 elastomeric shear mounted damper was built and tested on a T-55 power turbine spool in the rotors high speed balancing rig. This application of a shear mounted elastomeric damper demonstrated for the first time, the feasibility of using elastomers as the primary rotor damping source in production turbine engine hardware. The shear damper design was selected because it was compatible with actual gas turbine engine radial space constraints, could accommodate both the radial and axial thrust loads present in gas turbine engines, and was capable of controlled axial preload.