Reference : Experimental and numerical investigation of the nonlinear dynamics of compliant mecha...
Scientific journals : Article
Engineering, computing & technology : Aerospace & aeronautics engineering
Engineering, computing & technology : Mechanical engineering
http://hdl.handle.net/2268/214323
Experimental and numerical investigation of the nonlinear dynamics of compliant mechanisms for deployable structures
English
Dewalque, Florence mailto [Université de Liège > Département d'aérospatiale et mécanique > Laboratoire des Systèmes Multicorps et Mécatroniques >]
Schwartz, Cédric mailto [Université de Liège > Département des sciences de la motricité > Kinésithérapie générale et réadaptation >]
Denoël, Vincent mailto [Université de Liège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil >]
Croisier, Jean-Louis mailto [Université de Liège > Département des sciences de la motricité > Kinésithérapie générale et réadaptation >]
FORTHOMME, Bénédicte mailto [Centre Hospitalier Universitaire de Liège - CHU > > Service de médecine de l'appareil locomoteur >]
Bruls, Olivier mailto [Université de Liège > Département d'aérospatiale et mécanique > Laboratoire des Systèmes Multicorps et Mécatroniques >]
2018
Mechanical Systems and Signal Processing
Academic Press
101
1-25
Yes (verified by ORBi)
International
0888-3270
1096-1216
London
United Kingdom
[en] Tape springs ; Nonlinear dynamics ; Finite element simulations ; Structural damping ; Experimental tests ; Model correlation
[en] This paper studies the dynamics of tape springs which are characterised by a highly geometrical nonlinear behaviour including buckling, the formation of folds and hysteresis. An experimental set-up is designed to capture these complex nonlinear phenomena. The experimental data are acquired by the means of a 3D motion analysis system combined with a synchronised force plate. Deployment tests show that the motion can be divided into three phases characterised by different types of folds, frequencies of oscillation and damping behaviours. Furthermore, the reproducibility quality of the dynamic and quasi-static results is validated by performing a large number of tests. In parallel, a nonlinear finite element model is developed. The required model parameters are identified based on simple experimental tests such as static deformed configurations and small amplitude vibration tests. In the end, the model proves to be well correlated with the experimental results in opposite sense bending, while in equal sense, both the experimental set-up and the numerical model are particularly sensitive to the initial conditions.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/214323
10.1016/j.ymssp.2017.08.006
http://www.sciencedirect.com/science/article/pii/S0888327017304296

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