PSI - Issue 29

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 il l li t . i ir t. i i Structural Integrity Procedia 00 (2019) 000 – 000

www.elsevier.com/locate/procedia .elsevier.co /locate/procedia

ScienceDirect

Procedia Structural Integrity 29 (2020) 95–102

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© 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of Marco Tanganelli and Stefania Viti Abstract In this work we investigate the rocking response of the Riace bronze A, a slender statue modelled as an equivalent rigid body freestanding on an isolated base supported on: (a) Steel Reinforced Elastomeric Bearings, (b) Fiber Reinforced Elastomeric Bearings, (c) Flat Surface Sliding Bearings, and (d) Curved Surface Sliding Bearings. The dynamic responses of such devices contribute significantly to the rocking response of the base-isolated rigid block, so it is necessary to accurately predict the complex hysteretic behaviors of the above-mentioned devices. For this reason, an innovative uniaxial phenomenological model has been used. The proposed hysteretic model is described by an algebraic equation that does not require iterations to evaluate the state variables, namely the device restoring forces. Moreover, the proposed hysteretic model is based on a set of parameters with a clear mechanical significance. © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) I t is r e i esti ate t e r c i res se f t e iace r ze , a sle er stat e elle as a e i ale t ri i freesta i a is late ase s rte : (a) teel ei f rce last eric eari s, ( ) i er ei f rce last eric eari s, (c) lat rface li i eari s, a ( ) r e rface li i eari s. e a ic res ses f s c e ices c tri te si ifica tl t t e r c i res se f t e ase-is late ri i l c , s it is ecessar t acc ratel re ict t e c le steretic e a i rs f t e a e- e ti e e ices. r t is reas , a i ati e ia ial e e l ical el as ee se . e r se steretic el is escri e a al e raic e ati t at es t re ire iterati s t e al ate t e state aria les, a el t e e ice rest ri f rces. re er, t e r se steretic el is ase a set f ara eters it a clear ec a ical si ifica ce. © 2 e t rs. lis e lse ier . . T is is an open access article er the CC BY-NC-ND lice se ( tt ://creati ec s. r /lice ses/ - c- / . /) eer-re ie er res si ilit f arc a a elli a tefa ia iti ey ords: art object, hysteresis, nonlinear dyna ics, rigid block, seis ic isolation; I tr cti t ic f reat i terest ri t e last t eca es as ee t e iti ati f seis ic ris f r freesta i sle er jects eca se a stat es c tai e it i se s are si l s rte t e fl r r a e estal a are t re are t a le t e scillati s i ce eart a es ( sti , ali , ccar ). e t ai t es f res se f t e art ject ( elle as a ri i l c ) are sli i a r c i ti s. e first researc er t Art Collections 2020, Safety Issue (ARCO 2020, SAFETY) Comparative Assessment on the Rocking Response of Seismically Base-Isolated Rigid Blocks Davide Pellecchia* a , Salvatore Sessa a , Nicolò Vaiana a , Luciano Rosati a a Department of Structures for Engineering and Architecture, University of Naples Federico II, via Claudio 21, 80125 - Naples, Italy ide P ll i a , l t r a , i l i a , i ti a a epart ent of Structures for ngineering and rchitecture, niversity of aples ederico II, via laudio 21, 80125 - aples, Italy Peer-review under responsibility of Marco Tanganelli and Stefania Viti Keywords: art object, hysteresis, nonlinear dynamics, rigid block, seismic isolation; Introduction A topic of great interest during the last two decades has been the mitigation of seismic risk for freestanding slender objects because many statues contained within museums are simply supported on the floor or a pedestal and are not prepared to handle the oscillations induced by earthquakes (Augusti 1992, Caliò 2004, Zuccaro 2017). The two main types of response of the art object (modelled as a rigid block) are sliding and rocking motions. The first researcher to str ct

* Corresponding author. Tel.: +39 081-7683723; E-mail address: davide.pellecchia@unina.it * orresponding author. el.: 39 081-7683723; - ail address: davide.pellecchia unina.it

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2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of Marco Tanganelli and Stefania Viti is is a e access article er t e - - lice se ( tt ://creati ec s. r /lice ses/ - c- / . /) eer-re ie er res si ilit f arc a a elli a tefa ia iti

2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of Marco Tanganelli and Stefania Viti 10.1016/j.prostr.2020.11.144