Reference : Efficient uncoupled stochastic analysis with non-proportional damping
Scientific journals : Article
Engineering, computing & technology : Civil engineering
http://hdl.handle.net/2268/128372
Efficient uncoupled stochastic analysis with non-proportional damping
English
Canor, Thomas mailto [Université de Liège - ULg > Département ArGEnCo > Analyse sous actions aléatoires en génie civil >]
Blaise, Nicolas mailto [Université de Liège - ULg > Département ArGEnCo > Analyse sous actions aléatoires en génie civil >]
Denoël, Vincent mailto [Université de Liège - ULg > Département ArGEnCo > Analyse sous actions aléatoires en génie civil >]
2012
Journal of Sound & Vibration
Academic Press
331
2012
5283–5291
Yes (verified by ORBi)
International
0022-460X
London
United Kingdom
[en] non-proportional damping ; stochastic modal analysis ; asymptotic expansion ; wind engineering ; shock absorber
[en] The use of normal modes of vibration in the analysis of structures with nonproportional damping reduces the size of the resulting set of governing equations, but does not decouple them. A common practice consists in decoupling
the equations by disregarding the o -diagonal elements in the modal damping matrix. Recently, an approximation based on an asymptotic expansion of the modal transfer matrix has been proposed in a deterministic framework to partially account for o -diagonal terms, but still with a set of uncoupled equations. This paper aims at extending this method in a stochastic context. First the mathematical background is introduced and the method is illustrated with a simple example. Then its relevance is demonstrated within the context of the structural analysis of a large and realistic structure.
Researchers ; Professionals
http://hdl.handle.net/2268/128372
10.1016/j.jsv.2012.07.019
http://www.sciencedirect.com/science/article/pii/S0022460X12005457

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