Harmonic analysis of a HP GT section disc

We have conducted pre-stress modal cyclic symmetry analysis for the disc of high-pressure section of industrial gas turbine for MAN Diesel & Turbo. The purpose of the analysis was to determine typical deformation models as well as resonant frequencies. On the basis of the obtained data Campbell and Goodman diagram has been drawn up.

GES has subsequently also proposed modifications that would allow elimination of the resonant frequencies within the rotational operating speeds.