A localization and updating strategy of large finite element models in structural dynamics

Cédric Pozzolini (1) , Fabrice Buffe (1) , Michel Salaün (2)

1 CNES - Centre National d'Études Spatiales [Toulouse]
2 ICA - Institut Clément Ader

The purpose of this paper is to evaluate the application of the error of constitutive law method to the updating of large FE models of space structures using FRF experimental results. First, we briefly recall the theoretical basis of this method in modal and frequency approaches. Then, the notion of visibility is introduced to improve the modelling of localization error and the quality of modal updating, for low frequencies. Finally we propose a global strategy and discuss the results we obtained on satellite JASON2.

Mots clés: Model updating; Error localization; Visibility; Constitutive Relation Error

Domaines: Mécanique des structures [physics.class-ph]

Cédric Pozzolini, Fabrice Buffe, Michel Salaün. A localization and updating strategy of large finite element models in structural dynamics. ECSSMMT 2009 - 11th European Conference on Spacecraft Structures, Materials and Mechanical Testing, Sep 2009, Toulouse, France. pp.0. ⟨hal-01851848⟩