PSI - Issue 78

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ScienceDirect

Procedia Structural Integrity 78 (2026) 2022–2029

© 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of XX ANIDIS Conference organizers Keywords: Steel Silos; Simplified Model; Elastic Behaviour; Granular-like Material; Service Conditions. Nomenclature , modification stiffness coefficient of filling material and steel , densities of filling material and steel a stat , a seism acceleration to define static and seismic load profile DOF degree of freedom mat , s elastic moduli of filling material and steel h, h mat total and generic height of the contents Abstract The paper presents a simplified model for simulating the elastic behavior of cylindrical ground-supported steel silos containing granular-like material. The idea is to reproduce the elastic parameters of this silo typology through a simple three-degree-of freedoms (3-DOFs) model. To this aim, analytical rules and equations for defining mass and stiffness of the model were defined, accounting for different service conditions, i.e., filling levels of 0%, 30%, 60%, 90%, and for different geometries, i.e., very slender, slender, boundary, intermediate squat, squat. The outcomes were first evaluated in terms of natural frequencies, and then in terms of horizontal (or normal) and vertical (or frictional) static pressures, according to the current European code provisions. The outcomes were calibrated on overdetailed finite element models, reproducing analogous silos with the related geometries and service conditions. Preliminary results provide the opportunity to further improve the proposed simplified model, especially in a view of predicting the nonlinear behavior of cylindrical steel silos and the most likely buckling failure modes under seismic actions. XX ANIDIS Conference A simplified model to simulate the elastic behavior of cylindrical steel silos filled with granular-like material Francesco Martini a , Sergio Ruggieri b , Mariano Angelo Zanini a *, Giuseppina Uva b , Carlo Pellegrino a a Department of Civil, Environmental and Architectural Engineering, University of Padova, Via Marzolo 9, Padova, 35131, Italy b Department DICATECH, Polytechnic University of Bari, Via Orabona 4, Bari, 70125, Italy

* Corresponding author: Mariano Angelo Zanini. E-mail address: marianoangelo.zanini@unipd.it

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of XX ANIDIS Conference organizers 10.1016/j.prostr.2025.12.257