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Dynamical sensitivity analysis on blades in turbine machines

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

Abstract

High cycle fatigue of blades caused by forced vibration is an outstanding problem in turbine machines such as turbo engines and ground gas turbines. Dynamical sensitivity analysis (DSA) is put forward and the mathematic model is erected according to blades. DSA on blades includes sensitivity analysis on inherent characteristic (DSAI) and sensitivity analysis on excitation environment (DSAE). The influence laws of dynamical parameters are gained through DSA, and therefore the optimization design on blades is feasible. DSAE is presented by dint of numerical methods, aerodynamic forces in engines possess multifrequency and spatial distributing characteristics, so DSAE on blades is performed against these characteristics and some results are obtained. Finally the resonance criteria are advanced and a new dynamical design method is put forward.

Original languageEnglish
Title of host publicationVibration, Structural Engineering and Measurement II
Pages602-606
Number of pages5
DOIs
StatePublished - 2012
Event2012 International Conference on Vibration, Structural Engineering and Measurement, ICVSEM 2012 - Shanghai, China
Duration: 19 Oct 201221 Oct 2012

Publication series

NameApplied Mechanics and Materials
Volume226-228
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2012 International Conference on Vibration, Structural Engineering and Measurement, ICVSEM 2012
Country/TerritoryChina
CityShanghai
Period19/10/1221/10/12

Keywords

  • Blade
  • Dynamical response
  • Dynamical sensitivity analysis

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