Vibration localization of oblique impact of whole-circle bladed disk with tips was studied. Lumped parameter dynamical model of whole-circle bladed disk with tips was developed to calculate the natural frequencies under varying coupled stiffness. Vibration characteristics and rub-impact force of the blade at different orders were computed under mistuning tip clearance. Then

oblique impact/non-impact vibration localization factors with different coupling stiffnesses were analyzed under blade mistuning stiffness. Differences of vibration localization factors for two types of coupling stiffness were studied under random mistuning stiffness and tip clearance. The result shows that when the oblique impact or disk resonance occurs

even the tuning bladed disk system may have vibration localization phenomenon. On the other hand

vibration localization happens at every order of resonance for mistuning systems. Computations suggest that rub-impact force is directly associated with vibration localization. Blades turn more sensitive to mistuning due to the oblique impact effect. In addition

systems with weaker coupling stiffness often have relatively larger vibration localization factors. Also

mistuning stiffness has more influence on blade vibration localization sensitivity than the mistuning tip clearance.