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Multistage coupling of eight mistuned bladed discs on a solid shaft with 1% mistuning

Maurin A., Rządkowski R., Drewczyński M.

Mechanics and Mechanical Engineering

2011

Vol. 15, nr 3

309-317

Considered here was the effect of multistage coupling on the dynamics of a rotor consisting of eight mistuned bladed discs on a solid shaft. Free and forced vibrations were examined. In this study, the global rotating mode shapes of flexible mistuned bladed discs-shaft assemblies were calculated, taking into account rotational effects, such as centrifugal stiffening. The thus obtained natural frequencies of the blade, the shaft, the bladed disc, and the entire shaft with discs were carefully examined to discover resonance conditions and coupling effects.