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Identification of constitutive properties of a laminated rotor at rest through a condensed modal functional

Published online by Cambridge University Press:  24 December 2010

Guillaume Mogenier ,
Nouri-Baranger Thouraya ,
Regis Dufour ,
Lionel Durantay  and
Nicolas Barras
Guillaume Mogenier*
Affiliation:
Universitéde Lyon, CNRS, INSA-Lyon, LaMCoS UMR 5259, 18–20 rue des sciences, 69621 Villeurbanne, France
Nouri-Baranger Thouraya
Affiliation:
Universitéde Lyon, CNRS, INSA-Lyon, LaMCoS UMR 5259, 18–20 rue des sciences, 69621 Villeurbanne, France
Regis Dufour
Affiliation:
Universitéde Lyon, CNRS, INSA-Lyon, LaMCoS UMR 5259, 18–20 rue des sciences, 69621 Villeurbanne, France
Lionel Durantay
Affiliation:
Converteam SAS, Rotating Machines Division, 442 rue de la rompure, 54250 Champigneulles, France
Nicolas Barras
Affiliation:
Converteam SAS, Rotating Machines Division, 442 rue de la rompure, 54250 Champigneulles, France
*
a Corresponding author: guillaume.mogenier@insa-lyon.fr
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Abstract

Predicting the dynamic behavior of laminated rotors in bending requires the identification of the bending rigidity of the laminated core. An identification of constitutive properties is proposed on the rotor at rest, which is a first step for rotordynamics prediction. Modal parameters predicted and measured are included in a functional based on a hybrid Rayleigh quotient and combined with the Guyan method, the master degrees of freedom corresponding to the measurement points. The laminated core rigidity is extracted through a Levenberg-Marquardt minimization.

Keywords

VibrationidentificationoptimizationRayleigh quotientlaminated rotorsquirrel cageVibrationidentificationoptimisationquotient de Rayleighrotor feuilletécage d’écureuil
Type
Research Article
Information
Mechanics & Industry , Volume 11 , Issue 5 , September 2010 , pp. 309 - 326
Copyright
© AFM, EDP Sciences 2010

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References

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