Search results for " Dry Friction Dampers"

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Damping of rotor conical whirl by asymmetric dry friction suspension

2009

Abstract A new technique for the rotor whirl damping in rotating machinery, based on the elastic suspension of the journal boxes and the use of dry friction surfaces normal to the shaft axis between their supports and the frame, is here analysed theoretically for several cases of rotor systems characterized by mass and constraint asymmetry, where gyroscopic effects are to be expected and conical whirl motions may grow up. The critical flexural speeds can be easily cut off by an adhesive state of the supports and the whirl amplitude can be minimized as well throughout the remaining sliding range. Confining the operative angular speed of the rotor in the range of adhesive contact between the …

Materials scienceAcoustics and UltrasonicsRotor (electric)Mechanical EngineeringRotational speedAngular velocityConical surfaceMechanicsDissipationCondensed Matter PhysicsSettore ING-IND/13 - Meccanica Applicata Alle Macchinelaw.inventionRubbingCritical speedClassical mechanicsMechanics of MaterialslawRotating Machinery Gyroscopic Effects Conical Whirl Dry Friction DampersSuspension (vehicle)

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