Direct parametric analysis of resonance regimes for nonlinear vibrations of bladed disks

Petrov, E P (2007) Direct parametric analysis of resonance regimes for nonlinear vibrations of bladed disks. Journal of Turbomachinery, 129 (3). pp. 495-502. ISSN 0889-504X

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Abstract

A method has been developed to calculate directly resonance frequencies and resonance amplitudes as functions of design parameters or as a function of excitation levels. The method provides, for the first time, this capability for analysis of strongly nonlinear periodic vibrations of bladed disks and other structures with nonlinear interaction at contact interfaces. A criterion,for determination of major, sub-, and superharmonic resonance peaks has been formulated. Analytical expressions have been derived for accurate evaluation of the criterion and for tracing resonance regimes as function of such contact interface parameters as gap and interference values, friction and contact stiffness coefficients, and normal stresses. High accuracy and efficiency of the new method have been demonstrated on numerical examples including a large-scale nonlinear bladed disk model and major types of contact interfaces including friction contact interfaces, gaps, and cubic nonlinearities

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Subjects: T Technology > TJ Mechanical engineering and machinery
Depositing User: Yevgen Petrov
Date Deposited: 28 Nov 2012 16:59
Last Modified: 28 Nov 2012 16:59
URI: http://sro.sussex.ac.uk/id/eprint/43008
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