Modelling and analysis of a bladed drum subject to the Coriolis and mistuning effects

The interaction between the Coriolis and mistuning effects on a finite-element model (FEM) of simplified bladed drum compressor has been investigated in this paper. Subset Nominal Modes (SNM), Component Mode Mistuning (CMM) Integral (IMM) techniques have chosen adapted to consider reduction matrix. Both free forced responses ROMs validated using FEM solutions as benchmark. A new analysis Monte Carlo simulations performed disc blade independently, study domination one over other. impact effect highlighted through observation with without evolution global dynamic behaviour rotational speed for first time different excitation frequencies engine orders (EO). This in-depth investigation blisk allowed better understanding effects. blade-dominated modes which remain close veering regions strong effects, significant localisation amplitude magnification. results mainly highlight that disc-dominated blade–disc tend towards tuned appearance travelling waves.