A New Method of Reducing the Vibration Localization of the Multi-packet Whole Mistuned Bladed Disk System Using Bladed Packets

Kan, Xuanen; Zhao, Bo

doi:10.1007/s42405-021-00369-9

Cited by 4 publications

(4 citation statements)

References 45 publications

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“…Our previous work investigated the Coriolis effect on the intentional mistuning bladed disk. The results show that the Coriolis effect has an effect on the dynamic characteristics of the intentional mistuning bladed disk (Kan et al, 2017).…”

Section: Introductionmentioning

confidence: 89%

“…The robust design concept is proposed to control the vibration level by the parameter design in the bladed disk systems (Chan et al, 2010). The method of using bladed packets to reduce the vibration localization of the mistuned bladed disk is researched (Kan and Zhao, 2021), and the results show that the design of the bladed packets is an alternative method to reduce the larger forced response of the mistuned bladed disk system. Di Paolo et al (2021) introduced a friction-based passive method to reduce the vibration of a rotating structure (Di Paolo et al, 2021), and their research indicates that the dry friction can be used to reduce the vibration localization.…”

Section: Introductionmentioning

confidence: 99%

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A novel mathematical model for the design of the resonance mechanism of an intentional mistuning bladed disk system

Kan

Xing

2022

Mech. Sci.

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Abstract. Bladed disk systems with advanced functions are widely used in turbo-machineries. However, there are always deviations in physical dynamic properties between blades and blades due to the tolerance and wear in operation. The deviations will lead to vibration localization, which will result in high cycle fatigue and accelerate the damage of the bladed disk system. Therefore, many intentional mistuning patterns are proposed to overcome this larger local vibration. Previous studies show that intentional mistuning patterns can be used to reduce the vibration localization of the bladed disk. However, the determination of the resonance mechanism of the intentional mistuning bladed disk system is still an unsolved issue. In this paper, a novel mathematical model of resonance of an intentional mistuning bladed disk system is established. Mistuning of blades and energy resonance are included in this theoretical model. The method of the mechanical power of the rotating blade for one cycle is applied to obtain the resonance condition. By using this theoretical model, the resonance mechanism of an intentional mistuning bladed disk is demonstrated. The results suggest that the ideal results can be obtained by adjusting the intentional mistuning parameter. This paper will guide the design of the dynamic characteristics of the intentional mistuning bladed disk.

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Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

A novel mathematical model for the design of the resonance mechanism of an intentional mistuning bladed disk system

Kan

Xing

2022

Mech. Sci.

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“…25 The shroud is used to reduce the vibration localization is researched. 26 Other ways of reducing the vibration of the structure are conducted. 27 Aero-engines are developing towards high power and high reliability.…”

Section: Introductionmentioning

confidence: 99%

“…However, in practical applications, it should be noted that the shroud often damages in blade disk system. Few works, [24][25][26] have been focused on bladed packets due to shroud damage. Distributed parameter model is applied to investigate the effect of lacing wire damage-induced mistuning on modal characteristics.…”

Section: Introductionmentioning

confidence: 99%

Dynamic characteristics of vibration localization of mistuned bladed disk due to shroud and blade damages

Kan,

Wang,

Zhao

2023

Journal of Low Frequency Noise, Vibration and Active Control

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Dynamic behaviors of turbine blades are important for the dynamic design of whole-bladed disk systems. The bladed disk systems with shrouds are used to achieve advanced functions in operation. The shrouds are used to connect several blades as a bladed packet, and several bladed packets are assembled as a bladed disk. Previous researches mainly focus on the mistuning of the bladed disk. However, in operation, the shrouds often suffer damage and wear, and it will lead to shrouds mistuning. The shroud is a critical component for adjusting the coupling strength of the blade to the blade. The innovation of this paper is to study the coupling dynamics problem caused by blade mistuning and shroud damage. The localized vibration of the bladed disk is caused by the blade mistuning, and the shroud damage can also cause the localized vibration of the bladed disk. The coupling dynamic behaviors of bladed disk caused by blade mistuning and shroud damage are important. Therefore, the dynamic behaviors of a mistuned bladed disk with the shroud are important for the bladed disk. A numerical method is conducted to investigate the dynamic characteristics of the whole bladed disk with shroud. The coupling effect between shroud and blade mistuning on the dynamic behaviors of the bladed disk is researched. The numerical model is validated by assuming the shroud and blade mistuning is zero. The coupling effect of shroud and blade mistuning leads to the characteristics being more complicated. Bladed packet is the basic part of the bladed disk with shroud. In order to study the modal characteristics of bladed packets due to shroud, an experiment is conducted. It is worth noting that the first sub remains invariable with the increasing of stiffness ratio.

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Flutter analysis of compressor blades under travelling wave modes using an efficient fluid–structure interaction method

LI,

DU,

et al. 2023

Chinese Journal of Aeronautics

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A New Method of Reducing the Vibration Localization of the Multi-packet Whole Mistuned Bladed Disk System Using Bladed Packets

Cited by 4 publications

References 45 publications

A novel mathematical model for the design of the resonance mechanism of an intentional mistuning bladed disk system

A novel mathematical model for the design of the resonance mechanism of an intentional mistuning bladed disk system

Dynamic characteristics of vibration localization of mistuned bladed disk due to shroud and blade damages

Flutter analysis of compressor blades under travelling wave modes using an efficient fluid–structure interaction method

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