Imposed displacement; Imposed acceleration; Base excitation; Reduced-order model; Craig–Bampton method; State-space model
Abstract :
[en] Generating reduced state-space models of base-excited structures is of great help in control engineering but is not straightforward to implement in practice, and this problem is addressed in this work. Methods to impose non-homogeneous boundary displacements or accelerations are reviewed, and a novel relative acceleration method is proposed to treat the case of imposed displacements. Various construction approaches for state-space models having prescribed displacements or accelerations as input and including a static correction term are then developed. The theoretical developments are eventually illustrated with structures of increasing complexity, namely, a bar, a beam, and a multi-story building model.
Disciplines :
Mechanical engineering Civil engineering
Author, co-author :
Raze, Ghislain ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Dumoulin, Cédric ; ULB - Université Libre de Bruxelles [BE] > Building Architecture and Town Planning (BATir)
Deraemaeker, Arnaud ; ULB - Université Libre de Bruxelles [BE] > Building Architecture and Town Planning (BATir)
Language :
English
Title :
Reduced-order state-space models of structures with imposed displacements and accelerations
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