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ISSN 2753-3239
CCC: 3
PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY
Edited by: B.H.V. Topping and J. Kruis
Paper 8.1

Discontinuous vs continuous approaches for the nonlinear dynamics of an historic masonry tower

M. Schiavoni1, N. Mendes2, D.V. Oliveira2, G. Milani3 and F. Clementi1

1Dept. of Civil and Building Engineering, and Architecture, Polytechnic University of Marche, Ancona, Italy
2ISISE, Department of Civil Engineering, University of Minho, GuimarĂ£es, Portugal
3Dept. of Architecture, Built Environment and Construction Engineering, Polytechnic of Milano, Milano, Italy

Full Bibliographic Reference for this paper
M. Schiavoni, N. Mendes, D.V. Oliveira, G. Milani, F. Clementi, "Discontinuous vs continuous approaches for the nonlinear dynamics of an historic masonry tower", in B.H.V. Topping, J. Kruis, (Editors), "Proceedings of the Fourteenth International Conference on Computational Structures Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 3, Paper 8.1, 2022, doi:10.4203/ccc.3.8.1
Keywords: masonry towers; concrete damage plasticity model; non-smooth contact dynamics method; non-linear dynamics.

Abstract
The present paper investigates, from an advanced numerical point of view, the progressive damage of the Amatrice (Rieti, Italy) civic clock tower, after a long sequence of strong earthquakes that struck Central Italy in 2016. Two advanced numerical models are here used to provide an insight into the modalities of progressive damage and the behaviour of the structure under strong dynamic excitations, namely a Discrete Element Method (DEM), the Non-Smooth Contact Dynamics (NSCD) method, and a FE Concrete Damage Plasticity (CDP) model. In both cases, a full 3D detailed discretization is adopted. From the numerical results, the role played by both the actual geometries and the insufficient resistance of the constituent materials are envisaged, showing a good match with actual crack patterns observed after the seismic sequence.

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