Using simplified finite element model and the accelerated Monte Carlo simulation based on extremum principle

the forced response characteristics of bladed disks with stagger angle mistuning were investigated in detail.Six different variations of stagger angle error were simulated and corresponding probability density functions of response magnification factors were calculated separately.By comparing different curves

effect regularity of bladed stagger angle on the forced response of bladed disk assemblies was explored.Results indicate that stagger angle mistuning has small effect natural frequencies

but has a great effect on the blade response.The forced response would increase when stagger angle mistuning strength increases.