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Vibration Characteristics of Systems with Multiple Blades
journal contribution
posted on 2023-06-08, 00:20 authored by G X Ren, Z C Zheng, William WangWilliam WangAn interesting phenomenon can be observed when the state-space dynamic substructural method is applied to the eigenproblem of bladed disk-shaft systems: whether or not the shaft is flexible, each frequency of the single root-fixed blade appears as a frequency of the whole structure with a multiplicity of at least (n -3), where n is the number of repetitive blades. The presented result can be regarded as an extension of previous findings by the authors in the sense that the commonly interfaced repetitive substructures are allowed to be treated as a rigid body in modal analysis. The defectiveness issue of the multiple eigenvalues arising from the repetitive substructures is also addressed. Examples of rotary wing models and a simplified turbine model are presented for validation together with attempting their physical explanations.
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Publication status
- Published
Journal
Journal of Sound and VibrationISSN
0022460XPublisher
Journal of Sound and VibrationIssue
4Volume
225Page range
597-610ISBN
0022-460XDepartment affiliated with
- Engineering and Design Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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