Three-dimensional elasticity-based solutions for natural vibrations of low aspect ratio compressor blades

Oliver G. McGee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper offers three-dimensional (3-D) vibration frequency solutions for low aspect ratio compressor blades. The Ritz method is used to minimize the 3-D elasticity-based dynamical energies with displacements approximated by mathematically complete polynomials satisfying the clamped boundary conditions exactly. The accuracy of the method is established by a convergence study explicitly showing the influence of solution determinant size. Several tables are presented which show the variation of natural frequencies with twist angle in the presence of skewness of low aspect ratio compressor blades. Results obtained using the present Ritz method are used to elucidate those frequency solutions which are inaccessible using beam, plate and shell theories, since kinematic constraints associated with these theories are eliminated in the present 3-D approach.

Original languageEnglish
Title of host publicationGeneral
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791878927
DOIs
StatePublished - 1993
EventASME 1993 International Gas Turbine and Aeroengine Congress and Exposition, GT 1993 - Cincinnati, United States
Duration: May 24 1993May 27 1993

Publication series

NameASME 1993 International Gas Turbine and Aeroengine Congress and Exposition, GT 1993
Volume3C

Conference

ConferenceASME 1993 International Gas Turbine and Aeroengine Congress and Exposition, GT 1993
Country/TerritoryUnited States
CityCincinnati
Period05/24/9305/27/93

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