Structural system identification in the presence of resonant non-structural appendages

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dc.contributor.authorMatta, Emiliano
dc.contributor.authorCeravolo, Rosario
dc.contributor.authorDe Stefano, Alessandro
dc.contributor.authorQuattrone, Antonino
dc.contributor.authorZanotti Fragonara, Luca
dc.date.accessioned2017-08-01T14:02:17Z
dc.date.available2017-08-01T14:02:17Z
dc.date.issued2012-12-31
dc.description.abstractAccurate finite element (FE) models are required in many applications of civil engineering. Non-structural elements (NSEs) often interfere with the main structure, altering its stiffness and modal signature. Neglecting such interaction in modelling, although a common design practice, may lead to unreliable predictions of future events and biased interpretations of in-field dynamic tests. In the current literature, the role of NSEs in vibration-based structural system identification (SSI) is well documented for NSEs working in parallel (P-NSEs) with the main structure (e.g.masonry infills in buildings, pavements or railings in bridges and footbridges) but is totally unexplored for NSEs working in series (S-NSEs) with the main structure (e.g. non-structural appendages such as chimneys, parapets, tanks, but also partitions and claddings in their out-of-plane modes). Presenting various numerical and experimental case studies, the present paper shows how in-series NSEs, through augmenting the modal model and by chance resonating with some structural mode, might significantly alter the dynamic behaviour of the main structure, and severely invalidate SSI if not properly accounted for while performing modelling and dynamic identification.en_UK
dc.identifier.citationEmiliano Matta, Rosario Ceravolo, Alessandro De Stefano, Antonino Quattrone, Luca Zanotti Fragonara. Structural system identification in the presence of resonant non-structural appendages. 11th International Conference on Computational Structures Technology (CST2012), 4-7 September 2012, Dubrovnik, Croatia.en_UK
dc.identifier.isbn9781622763795
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/12257
dc.language.isoenen_UK
dc.publisherCivil-Comp Pressen_UK
dc.subjectstructural system identificationen_UK
dc.subjectmodel calibrationen_UK
dc.subjectmodal analysisen_UK
dc.subjectnon-structural appendagesen_UK
dc.subjecttuned vibration absorbersen_UK
dc.subjectmodelling errorsen_UK
dc.titleStructural system identification in the presence of resonant non-structural appendagesen_UK
dc.typeConference paperen_UK

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