The investigation of the coupled vibration in a flexible-disk blades system considering the influence of shaft bending vibration

She, Houxin; Li, Chaofeng; Tang, Qiansheng; Wen, Bangchun

doi:10.1016/j.ymssp.2018.03.044

Cited by 71 publications

(22 citation statements)

References 31 publications

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“…System. According to [31], the energy expression of the flexible disk and the i th rotating beam can be described as…”

Section: Mathematical Formulation Of the Rotating Disk-beammentioning

confidence: 99%

“…where the specific meaning of the symbols in energy expression can be seen in the Appendix A or introduced in [31]. Besides, v b and w b are the beam's total displacements in the global coordinate, which can be given as…”

Section: Mathematical Formulation Of the Rotating Disk-beammentioning

confidence: 99%

“…However, FEM lacks computation efficiency and flexibility in a series of aspects, such as modifying geometric parameters, although the order reduction method is employed. In particular, there exist coupling vibration problems among the multiple subcomponents in the system, such as the problem in [15,31]. Consequently, for discussing the mechanism simply and Frequency ω (Hz) Frequency ω (Hz) efficiently, the derived continuum is a very effective choice.…”

Section: Shock and Vibrationmentioning

confidence: 99%

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Nonlinear Vibration Analysis of a Rotating Disk-Beam System Subjected to Dry Friction

She

Tang

et al. 2020

Shock and Vibration

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In this work, a continuum model is proposed to simulate and interpret the coupling vibration characteristics of a rotating disk-beam system with the dovetail interfaces. The dovetail interface feature is represented by a macroslip dry friction model. The present study also derives a new mode function to simulate the vibration of a rotating beam with loosely assembled dovetail attachment. The new proposed mode function is validated by comparing the natural characteristics and vibration response with those obtained from a finite element (FE) model. At last, based on the nonlinear response results obtained by the Newmark-β method, the effects of different parameters on the nonlinear dynamics of the coupling system are discussed. The following interesting phenomena have been revealed: the flexible disk can impose different influences on the response characteristics of the rotating beam. The effects of dry friction on the beam’s energy dissipation are significant, especially at a low rotational speed. Further analysis yields that the excitation level and friction coefficient also exhibit a significant impact on the damping effect of dry friction. Consequently, it should be noted that the optimal values of the contact surface’s parameters allow achieving a better damping effect in the engineering practice.

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“…System. According to [31], the energy expression of the flexible disk and the i th rotating beam can be described as…”

Section: Mathematical Formulation Of the Rotating Disk-beammentioning

confidence: 99%

Section: Mathematical Formulation Of the Rotating Disk-beammentioning

confidence: 99%

Section: Shock and Vibrationmentioning

confidence: 99%

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Nonlinear Vibration Analysis of a Rotating Disk-Beam System Subjected to Dry Friction

She

Tang

et al. 2020

Shock and Vibration

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“…Zhou等人 [3] 基于假设模态法建立了轴-盘-片耦合系统模型, 但仅考虑了轴的扭转振动, 未考虑轴的弯曲变形以及轴盘的耦合效应, 文献[4~6]分析了圆盘的弹性、叶片安装角和叶片裂纹对系统的影响. She等人 [7] 在此基础上考虑轴的弯曲变形, 但未考虑轮盘的陀螺效应.…”

Section: 引言unclassified

Vibration characteristics analysis of a stepped-shaft-flexible-disk coupling system

Yang

Liu

et al. 2019

Sci. Sin.-Tech.

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“…Ma et al [12] developed a dynamic model for rotor-blade systems by representing blades as Timoshenko beams and shafts as multiple lumped mass points connected by massless springs. She et al [13] developed an analytical model for the coupling vibration analysis of a blade-disc-shaft system. In these investigations, the mistuning in blades and discs, which is an inevitable issue due to manufacturing tolerances, material deviations, and in-service wear, tended to be neglected.…”

Section: Introductionmentioning

confidence: 99%

A Reduced-Order Model for the Vibration Analysis of Mistuned Blade–Disc–Shaft Assembly

Wang

Zheng

2019

Applied Sciences

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An effective reduced-order model is presented in this paper for the vibration analysis of a mistuned blade–disc–shaft assembly considering the flexibility of the shaft and the rotordynamic effects. For the sake of accurate modeling and quantitative analysis, three-dimensional (3D) finite element models were employed in obtaining the governing equations of motion with the Coriolis force, centrifugal stiffening, and spin softening effects taken into account. Then, an efficient model order reduction technique based on the coordinate projection by normal modes of tuned assembly and cyclic symmetry analysis was developed for mistuned blade–disc–shaft assembly. The criterion of whether one matrix could be incorporated in cyclic symmetry analysis is presented. During the modeling, the mistuning in blade and disc was taken into account and dealt with independently. In mistuning projection, the blade and disc parts were both projected onto their tuned counterparts of the sector model, where the boundary conditions were set to be fixed and free, respectively. Finally, an example of a blade–disc–shaft assembly was employed to validate the effectiveness of the presented method in free and forced vibration analysis.

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The investigation of the coupled vibration in a flexible-disk blades system considering the influence of shaft bending vibration

Cited by 71 publications

References 31 publications

Nonlinear Vibration Analysis of a Rotating Disk-Beam System Subjected to Dry Friction

Nonlinear Vibration Analysis of a Rotating Disk-Beam System Subjected to Dry Friction

Vibration characteristics analysis of a stepped-shaft-flexible-disk coupling system

A Reduced-Order Model for the Vibration Analysis of Mistuned Blade–Disc–Shaft Assembly

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