The influence of a mistuned blade's staggle angle on the vibration and stability of a shaft-disk-blade assembly
Yi-Jui Chiu,Shyh-Chin Huang +1 more
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TLDR
In this paper, the influence of the staggle angle on the coupling vibrations and stability of a shaft-disk-bladed rotor system was investigated analytically, and it was found that a staggley angle can change not only the natural frequencies but also the types of coupling vibrations, such as disk-blade, disk-transverse and blade bending.Abstract:
The influence on coupling vibrations and stability among shaft-torsion, disk-transverse and blade-bending of a rotor system with a mistuned blade's staggle angle was investigated analytically. A shaft-disk-blade system has been found existing two types of coupling vibrations, disk-blade (DB), and blade-blade (BB) modes when the shaft was assumed rigid. If the shaft's torsional flexibility was taken into account, an additional type of coupling modes, shaft-disk-blade (SDB), appeared. When an angle-mistuned blade existed, the blades periodicity was destroyed and it was found to change not only the natural frequencies but also the types of modes. Due to blade's mistune, the shaft torsion had to participate to balance such that DB modes vanished and replaced by SDB modes. A mistuned staggle angle was numerically found to alter the natural frequencies in an almost linear trend. At last, the rotational effects were found to merge frequency loci and eventually reached an instability point. Very interestingly, a mistuned blade diminished the possible instability caused by blade-dominating modes, which existed in a perfect and periodic rotor. In words, the rotor might benefit from a mistuned blade from the stability viewpoint. The shaft-dominating mode, yet, was unaffected by the mistune and retained a possible instability.read more
Citations
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The coupling vibration characteristics of a flexible shaft-disk-blades system with mistuned features
TL;DR: In this paper, the authors investigated the coupling vibration characteristics of a flexible shaft-disk-blades system with mistuned features, and they found that there are four types of coupling modes.
Journal ArticleDOI
An assumed mode method and finite element method investigation of the coupled vibration in a flexible-disk rotor system with lacing wires
Shui-Ting Zhou,Shui-Ting Zhou,Yi-Jui Chiu,Guo-Fei Yu,Chia-Hao Yang,Hong-Wu Huang,Hong-Wu Huang,Sheng-Rui Jian +7 more
TL;DR: In this article, the assumed mode method (AMM) and finite element method (FEM) were compared to investigate the coupled shaft-torsion, disk-transverse, and blade-bending vibrations in a flexible-disk rotor system.
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Three methods for studying coupled vibration in a multi flexible disk rotor system
TL;DR: In this paper, the authors improved and developed a shaft-disk-blade (SDB) rotor system based on the previous studies of the authors in the last decade from Yang and Huang (2005) to Chiu et al.
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Study of coupling between shaft bending and disc zero nodal diameter modes in a flexible shaft-disc assembly
TL;DR: In this paper, the authors investigated and quantified the coupling between disk 0ND modes and shaft lateral modes and its correlation with some innovative, oriented bearing supports, which couple shaft axial and lateral displacements.
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Effects of blade’s interconnection on the modal characteristics of a shaft-disk-blade system
TL;DR: In this paper, the effects of varying lacing wire location (XL) and stiffness ratio (KL) on the coupling behavior between subcomponents were analyzed for a packet blade-disk-shaft coupling model.
References
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Journal ArticleDOI
Vibration Characteristics of Bladed Disc Assemblies
TL;DR: In this article, a study is made to establish the basic vibration characteristics of bladed disc assemblies and an analysis is presented and used to predict the natural frequencies and mode shapes of uniform bladed di...
Journal ArticleDOI
The Natural Frequencies and Critical Speeds of a Rotating, Flexible Shaft-Disk System
D. R. Chivens,H. D. Nelson +1 more
Journal ArticleDOI
Modal Analysis of Rotating Flexible Structures
TL;DR: In this paper, a free vibration analysis of a rotating cantilever structure is presented, and the results indicate the influence of structural orientation and magnitude of spin on the modal and stability characteristics of the structure.
Journal ArticleDOI
Vibration analysis of shaft-bladed disk system by using substructure synthesis and assumed modes method
Sang-Bok Chun,Chong-Wen Lee +1 more
TL;DR: In this article, an analytical substructure synthesis and assumed modes method was developed to investigate the effect of the flexibility of a bladed disk assembly on the vibrational mode of a flexible rotor system.
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