Based on various difficulties in study on vibration localization mechanism of bladed disks with mistuned non-linear friction damping

especially the problems like establishment and solution of non-linear mechanical model

the mechanical model of bladed disks with random mistuning of hysteretic dry friction damping was established in this thesis

and an incremental harmonic balance method was used to analyze the effects of parameters of bladed disks like degree of mistuning of dry friction force

coupled stiffness

viscous damping ratio and friction strength

on the forced response of bladed disks.Studies reveal that tuned bladed disks with non-linear friction damping may also cause vibrational energy localization phenomenon

and the random mistuning of dry friction force intensifies its vibration localization.