Study on the Coupled Vibration Characteristics of a Two-Stage Bladed Disk Rotor System

Yu, Yong; Jin, Xiaolong; Fu, Yanming; Zhao, Tianyu

doi:10.3390/app11188600

Cited by 2 publications

(3 citation statements)

References 30 publications

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“…Bladh [5] established a simplified analytical model of two-stage mistuned blades and explored the effects of disk flexibility and inter-stage coupling on mistuned dynamic characteristics. Yu [6] analyzed the vibration characteristics of the two-stage coupled vane disk system and studied the effect of cracks on the strength failure of the multistage rotor system. Most of the above scholars focus on single-stage vane system or two-stage coupled bladed disk system.…”

Section: Introductionmentioning

confidence: 99%

Analysis of random mistuning vibration characteristics of multi-stage bladed disk system

You,

Feng,

Zhang

et al. 2023

Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023)

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In order to investigate the relationship between the mistuning of the aeroengine compressor multistage bladed disk structure and the maximum amplitude of vibration response, a three-stage bladed disk lumped parameter model with inter-stage coupling was established, and Monte Carlo sampling technique was used to simulate the random mistuning mode of the stiffness of the bladed disk system. The vibration response of the three-stage blending-disk system in the harmonic and mistuning state is obtained by analyzing the vibration response of each vibration mode. The results show that the amplitude of the bladed disk system can be reduced by increasing the damping value. In the case of mistuning, the displacement of the bladed disk system and the maximum amplitude of spectrum analysis are larger than those in the case of harmonic. With the gradual increase of the standard deviation of stiffness mistuning, the system response displacement is gradually enhanced, and the maximum response amplitude is obtained at the upper bound point of mistuning strength. So, there is no so-called mistuning 'threshold' condition.

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Section: Introductionmentioning

confidence: 99%

Analysis of random mistuning vibration characteristics of multi-stage bladed disk system

You,

Feng,

Zhang

et al. 2023

Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023)

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“…In addition, the modeling framework is independent of the modeling methods of each stage, which makes it possible to use various existing modeling methods of a single stage. Yu [12] established the blade disk rotor system according to the finite element method. A substructure modal synthesis super element method (SMSM) with fixed interface and free interface is proposed to obtain the vibration characteristics of rotor system.…”

Section: Introductionmentioning

confidence: 99%

“…Figs [12][13][14][15][16][17]. shows the distribution of strain energy of each blade disk at the resonance peak of tuned and mistuned bladed disk system.It can be seen from Fig.11to Fig.17, the resonance frequency is around 1100 Hz or 1980 Hz, the strain energy is mainly concentrated in the second stage bladed disk, dominated by blade vibration, the resonance frequency is near 1980 Hz and the strain energy is large.…”

mentioning

confidence: 99%

Vibration characteristics of mistuned multistage bladed disks of the aero-engine compressor

Zhang¹,

Feng²,

You³

et al. 2022

J. vibroeng.

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In order to analyze the vibration characteristics of mistuned multistage bladed disks of an aero-engine compressor, a finite element reduction model of mistuned multistage bladed disks is established based on substructure modal synthesis method. The accuracy of the substructure model was verified by comparing calculation accuracy of the substructure model and the integral model. The influence of different modal truncation numbers on the calculation results are discussed. The vibration modes of each stage of the bladed disks are obtained, the forced response is analyzed from the perspective of strain energy. The result shows that modal truncation number, rotation softening effect, and speed have significant effects on the dynamic frequency calculation results of the multistage bladed disks. The typical mode shapes of the first 200 orders of multistage bladed disks are obtained. With the increase of mistuning standard deviation, the strain energy of multistage bladed disk system decreases gradually.

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Study on the Coupled Vibration Characteristics of a Two-Stage Bladed Disk Rotor System

Cited by 2 publications

References 30 publications

Analysis of random mistuning vibration characteristics of multi-stage bladed disk system

Analysis of random mistuning vibration characteristics of multi-stage bladed disk system

Vibration characteristics of mistuned multistage bladed disks of the aero-engine compressor

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