Reduction of Multi-Stage Disk Models: Application to an Industrial Rotor

Abstract

The present study deals with the reduction of multi-stage bladed disk assemblies. The guidelines of the proposed method which uses rotor cyclic modeshapes in conjunction with blade-dominated modes to account for the kinematics of each bladed sector of each disk are first recalled. This leads to compact reduced models whose accuracy has been extensively tested on simple but realistic academic models. In the second part of this paper, the proposed methodology is applied to an industrial rotor provided by Snecma to conduct an analysis at a wider scale.