PSI - Issue 29

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 vailable online at .sciencedirect.co i i t Structural Integrity Procedia 00 (2019) 000 – 000

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

ScienceDirect

Procedia Structural Integrity 29 (2020) 142–148

© 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 The numerical representation of the dynamic response of art works is the most reliable instrument to predict their seismic safety. Their adoption, however, require the knowledge of the effective mechanical properties of the artifacts and their restraint conditions. Namely, the amount of friction arising between standing art works and their supports largely affects the quality of their collapse and, therefore, the choice of the model to adopt in the analysis. In this work a facility for assessing the dynamic contact behaviour of marble sample standing on different supports has been investigated. The facility consists of a dynamic test to perform through the bidirectional shaking table at the Disaster Resilience Simulation Laboratory at the Politecnico di Torino. The friction coefficient has been found from the dynamic test by comparing the acceleration registered at the load cell, which is related to the reaction of the sample, and one measured at the shaking table surface. The obtained values of friction coefficient have been related to the velocity of the adopted input. A preliminary test on a single concrete sample has been performed to check the proposed procedure, by considering three different loading conditions: one of them is the acceleration history of a real ground motion, while the other two have a constant amplitude and a constant frequency, respectively. © 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 Keywords: dynamic friction coefficient; marble mechanical behaviour; dynamic response of marble statues; artefacts analysis; seismic safety of art works. The nu erical representation of the dyna ic response of art orks is the ost reliable instru ent to predict their seis ic safety. Their adoption, ho ever, require the kno ledge of the effective echanical properties of the artifacts and their restraint conditions. a ely, the a ount of friction arising bet een standing art orks and their supports largely affects the quality of their collapse and, therefore, the choice of the odel to adopt in the analysis. In this ork a facility for assessing the dyna ic contact behaviour of arble sa ple standing on different supports has been investigated. The facility consists of a dyna ic test to perfor through the bidirectional shaking table at the isaster esilience Si ulation Laboratory at the Politecnico di Torino. The friction coefficient has been found fro the dyna ic test by co paring the acceleration registered at the load cell, hich is related to the reaction of the sa ple, and one easured at the shaking table surface. The obtained values of friction coefficient have been related to the velocity of the adopted input. preli inary test on a single concrete sa ple has been perfor ed to check the proposed procedure, by considering three different loading conditions: one of the is the acceleration history of a real ground otion, hile the other t o have a constant a plitude and a constant frequency, respectively. © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the C - - license (http://creativeco ons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of arco Tanganelli and Stefania iti Keywords: dynamic friction coefficient; marble mechanical behaviour; dynamic response of marble statues; artefacts analysis; seismic safety of art works. Art Collections 2020, Safety Issue (ARCO 2020, SAFETY) Developing a laboratory facility to assess friction coefficients of standing samples Gian Paolo Cimellaro a , Marco Tanganelli b , Marco Domaneschi a *, Stefania Viti b a Dipartimento di Ingegneria Strutturale, Edile e Geotecnica (DISEG), Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino b Dipartimento di Architettura (DIDA), Università di Firenze rt llecti s , afet Iss e ( , ) l i l r t r f ilit t fri ti ffi i t f t i l i l i ll r a , r lli b , r s i a , t f i iti b a iparti ento di Ingegneria Strutturale, Edile e eotecnica ( ISE ), Politecnico di Torino, Corso uca degli Abruzzi, 24, 10129 Torino b iparti ento di Architettura ( I A), niversità di Firenze Abstract bstract

* Corresponding author. Tel.: +39 011-0904835 E-mail address : marco.domaneschi@polito.it * Corresponding author. Tel.: +39 011-0904835 E- ail address : arco.do aneschi polito.it

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 2452-3216 2020 The uthors. Published by Elsevier B.V. This is an open access article under the - - license (http://creativeco ons.org/licenses/by-nc-nd/4.0/) Peer-revie under responsibility of arco Tanganelli and Stefania 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.2020.11.150