Can the torsional stiffness of the Euroflex disc coupling be varied to suit the results of torsional analysis of the turbo machinery train?
Torsional analysis of a rotating equipment train, is performed to rule out the possibility of resonance within the equipments running range. Generally the results of such an analysis, require some modification, in the design of the coupling to accommodate the corrective factors, since alterations to the main equipment are difficult. Even though Euroflex couplings are by nature torsionally rigid, they do exhibit some small level of torsional flexibility, by virtue of the physical modulus of the material of construction. Consequently it is possible to vary the torsional stiffness of the coupling by modifying the spacer tube to adjust the overall stiffness and remove the resonance from the problem zones. Torsional stiffness is generally increased by using larger diameter spacer, with increased wall thickness, while lowering of torsional stiffness calls for using close to solid spacer.
