Dynamic Analysis of Artifacts: Experimental Tests for the Validation of Numerical Models

Abstract

The protection of art goods is an important issue of the seismic engineering. Artifacts are often made by fragile and ancient material, and they can easily present irregular shapes and high slenderness. In these years many contributions have been devoted to their analysis, based on numerical models having different complexity and computational effort. The Finite Element Models represent the most common and versatile approach for the representation of artifacts. Nevertheless, their reliability depends on the numerical assumptions made for the analysis, which requires a wide number of information regarding the dynamic behavior of the artifacts, such as the friction between the analyzed object and its support, the effective damping, the inelastic involvement of material, etc. In this work an experimental campaign has been started aimed at determining the main factors which affect the dynamic representation of artifacts through FEM analysis and simplified models. A large number of experimental tests, both static and dynamic, have been performed, by adopting both real and reduced scale objects.

Seismic Vulnerability of Museums’ Collections: A Case-Study

“…Each of these types of displayers can face different damages due to seismic excitation, and their seismic safety has to be checked consequently. For windows and pedestals, it's important to investigate the interaction with the floor and with the contained items [11,15] which can present a huge variety of technological solutions. As regards the panels, their safety is strictly related to their connection to the walls, and -as a consequence -to the wall's condition and behavior.…”

“…It started some years ago within the project RESIMUS [9], focused on the seismic vulnerability of the collections exhibited at the International Museum of Bargello in Florence. It comprehended both specific analysis of case-studies [10], including some experimental testing [11,12], and general form-filled procedures to check the seismic vulnerability of the collections [13].…”

Shaking Heritage

“…Within the RESIMUS studies, some in-depth analysis has been pursued on significant isolated sculptures , Pintucchi et a. 2019, Mattoni and Tanganelli 2018) using 3D geometrical models acquired during laser scanner campaigns (Tanganelli et al 2019, Verdiani and Fantini 2012. The seismic responses of the subjects derive from analyses pursued on Finite Element Model (FEM), by computing different dynamic analyses, using a spectrum-compatible ground motion, implying specific computer codes and assumptions, and considering both material behavior (linear and non-linear) and arrangement among the elements (e.g., base and object).…”

“…The activities of RESIMUS includes: publications, on field surveys and analysis, workshops with DIDA students, seminars, a.a (Zaffi and Viti 2021,. and the International Conference ARCO -Art Collections: Cultural Heritage, Safety & Innovation, Florence, Italy, September 21-23, 2020(Collotti, Brodini, Verdiani 2021 andTanganelli andViti 2020). 2 The research has been financed by the project "Giovani Ricercatori Protagonisti," promoted and financed by the Fondazione CRF with the University of Florence, on the theme "Enhancing the resilience of the Florentine territory: prevention and monitoring of the emergencies" (Aumentare la resilienza del territorio fiorentino: prevenzione e monitoraggio delle emergenze territoriali, Area tecnologica).…”