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Place CNAM Paris (Conservatoire National des Arts et Métiers), accès 33, 2ème étage, 2 rue Conté, 75003 Paris.
Hybrid tests on reinforced concrete substructures: towards real time with damageable models
The design of earthquake resistant buildings is a major concern in many parts of the world, and a necessary condition to guarantee the safety of individuals and infrastructures. Hence, dynamic tests on civil engineering structures are sometimes needed to define design guidelines adapted to the seismic risk, despite being difficult to undertake at full scale since the control of servo hydraulic systems exhibits many limitations. To address this issue, real time hybrid tests can be undertaken. These experiments consist in simulating certain parts of the specimen (assumed to be well known) while simultaneously testing its most critical sub regions, which are either rate dependent, highly damageable, or subjected to large inertial forces. Despite their benefits, these tests remain challenging to implement, as they require controlling actuators and executing numerical analyses in real time. To answer these concerns, this thesis investigates on the use of model order reduction techniques (e.g., hyper reduction) for creating metamodels of damageable structures that can be simulated during real-time hybrid tests. In addition, to maximize the efficiency of the testing procedure, a multi rate data exchange protocol is also set. Successful preliminary experiments validate the proposed strategy.
Composition du jury :
- Mme Nathalie ROY (Professeure Titulaire, Université de Sherbrooke) Rapporteuse
- M. David RYCKELYNCK (Professeur des Universités, Mines Paris PSL) Rapporteur
- M. Daniel RIXEN (Professeur, Université Technique de Munich) Examinateur
- M. Emmanuel FERRIER (Professeur des Universités, Université Lyon 1) Examinateur
- M. Frédéric RAGUENEAU (Professeur des Universités, EPF Engineering School) Invité