Abstract
The present study focuses on a sensitivity analysis of uncertain parameters for a mistuned bladed disk. After providing a general overview of the main theoretical aspects, this paper describes the way of computing the forced response with aeromechanical coupling. The bladed disk considered here is a representative naturally mistuned bladed disk whose geometry has been obtained by scan. A global sensitivity analysis is then performed using the Morris algorithm in order to rank a set of conservative and dissipative uncertain parameters in terms of their influence on the forced response level. Since a large number of response computations are needed for the sensitivity analysis, a reduced-order model that encompasses geometric mistuning is used.
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