[en] An approach is proposed to identify the modal properties of a subsystem made up of an arbitrary chosen inner module of embedded space equipment. An experimental modal analysis was carried out along the equipment transverse direction with references taken onto its outer housing. In parallel, a numerical model using the finite element (FE) method was developed to correlate with the measured results. A static Guyan reduction has led to a set of master degrees of freedom in which the experimental mode shapes were expanded. An updating technique
consisting in minimizing the dynamic residual induced by the FE model and the measurements has been investigated. A last verification has consisted in solving the numeric model composed of the new mass and stiffness matrices obtained by means of a
minimization of the error in the constitutive equation method.
Disciplines :
Art & art history Aerospace & aeronautics engineering Mechanical engineering
Author, co-author :
Ben Fekih, Lassaad ; Université de Mons > Faculté Polytechnique > Mécanique rationnelle, Dynamique et Vibrations
Kouroussis, Georges ; Université de Mons > Faculté Polytechnique > Mécanique rationnelle, Dynamique et Vibrations
De Fruytier, Christophe
Wattiaux, David ; Université de Mons > Faculté Polytechnique > Qualité, Accompagnement, Pédagogie - Polytech
Verlinden, Olivier ; Université de Mons > Faculté Polytechnique > Mécanique rationnelle, Dynamique et Vibrations
Language :
English
Title :
Output-only modal analysis of an internal unreachable module embedded in a space electronic equipement
Publication date :
04 July 2012
Event name :
11th Biennal Conference on Engineering Systems Design and Analysis ESDA 2012
Event place :
Nantes, France
Event date :
2012
Research unit :
F703 - Mécanique rationnelle, Dynamique et Vibrations
Research institute :
R500 - Institut des Sciences et du Management des Risques
