[en] The dynamics of the SmallSat, a real-life spacecraft possessing a complex isolation device with multiple nonsmooth nonlinearities is investigated. Experiments show that nonlinearities induce modal interactions between modes with non-commensurate linear frequencies. A model of the structure with a simplified description of the nonlinear connections is first built using techniques available in industry. Numerical continuation is then exploited to compute nonlinear normal modes and uncover interaction phenomena that can jeopardize the structural integrity.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Renson, Ludovic ; Université de Liège - ULiège > R&D Direction : Chercheurs ULiège en mobilité
Noël, Jean-Philippe ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Kerschen, Gaëtan ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Language :
English
Title :
Testing of a Spacecraft Structure with Non-Smooth Nonlinearities
Publication date :
May 2015
Event name :
SIAM Conference on Dynamical Systems
Event date :
May 17-21, 2015
Audience :
International
Name of the research project :
BeIPD-COFUND outgoing fellowship: Managing bifurcations of nonlinear mechanical systems using experimental continuation techniques
