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Réduction de modèles pour la dynamique des structures assemblées
| Content Provider | Semantic Scholar |
|---|---|
| Author | Festjens, Hugo Chevallier, Gaël Dion, Jean-Luc |
| Copyright Year | 2013 |
| Abstract | Built-up structures show weak non-linearity, thus it is rather commonplace to assume that their normal modes are both linear and uncoupled. At small to modest amplitude, the linearity assumption remains generally acceptable but the damping ratios of assembled structures are strongly amplitude dependent. Besides, the modes of any large structure may be LOCALLY collinears in the localized region of a joint. As a result the projection of the structure on normal modes is not adequate because the modal amplitudes may be strongly coupled. Instead of using this basis, the present paper deals with the use of a local basis in the region of the joints to reduce the size of the problem without losing the non-linear physics. Under an appropriate set of assumptions, the method keeps the dynamic properties of joints especially coupling effects. The formulation enables to take into account FE models of any realistic geometry. It also gives a straightforward process for experimental identification. Mots clefs : 3 maximum : mot-clef1 ; mot-clef2 ; mot-clef3 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://documents.irevues.inist.fr/bitstream/handle/2042/52317/a_ETS5R5FZ.pdf?sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
