Vibration Characteristics of Systems with Multiple Blades

Ren, G X, Zheng, Z C and Wang, W J (1999) Vibration Characteristics of Systems with Multiple Blades. Journal of Sound and Vibration, 225 (4). pp. 597-610. ISSN 0022460X

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Abstract

An 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.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: William Wang
Date Deposited: 06 Feb 2012 19:52
Last Modified: 30 Mar 2012 11:38
URI: http://sro.sussex.ac.uk/id/eprint/22652
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