Abstract:

A model of cyclic 2 DOF substructure of shrouded blisk is pressented.In this model the angle between shrouds interface and the direction of blade motion is considered.This is an improvement on the model of cyclic 1 DOF substructure.The equations of motion of the system based on the model are given at the same time.The general characters of forced vibration of the system especially the effect of the angle of shrouds interface are studied.

Key words: bladed-disc vibr ation, nonlinear vibr ation