Semi-active control of the rocking motion of monolithic art objects

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dc.contributor.authorCeravolo, Rosario
dc.contributor.authorLeonarda Pecorelli, Marica
dc.contributor.authorZanotti Fragonara, Luca
dc.date.accessioned2017-03-09T13:42:51Z
dc.date.available2017-03-09T13:42:51Z
dc.date.issued2016-04-12
dc.description.abstractThe seismic behaviour of many art objects and obelisks can be analysed in the context of the seismic response of rigid blocks. Starting from the pioneering works by Housner, a large number of analytical studies of the rigid block dynamics were proposed. In fact, despite its apparent simplicity, the motion of a rigid block involves a number of complex dynamic phenomena such as impacts, sliding, uplift and geometric nonlinearities. While most of the current strategies to avoid toppling consist in preventing rocking motion, in this paper a novel semi-active on–off control strategy for protecting monolithic art objects was investigated. The control procedure under study follows a feedback–feedforward scheme that is realised by switching the stiffness of the anchorages located at the two lower corner of the block between two values. Overturning spectra have been calculated in order to clarify the benefits of applying a semi-active control instead of a passive control strategy. In accordance with similar studies, the numerical investigation took into account the dynamic response of blocks with different slenderness and size subject to one-sine pulse excitation.en_UK
dc.identifier.citationRosario Ceravolo, Marica Leonarda Pecorelli, Luca Zanotti Fragonara, Semi-active control of the rocking motion of monolithic art objects, Journal of Sound and Vibration, Volume 374, 21 July 2016, pp1-16en_UK
dc.identifier.issn0022-460X
dc.identifier.urihttp://dx.doi.org/10.1016/j.jsv.2016.03.038
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/11588
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectArt objectsen_UK
dc.subjectRigid blocken_UK
dc.subjectRockingen_UK
dc.subjectSemi-active controlen_UK
dc.subjectNonlinear systemen_UK
dc.titleSemi-active control of the rocking motion of monolithic art objectsen_UK
dc.typeArticleen_UK

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