PSI - Issue 33

ScienceDirect Structural Integrity Procedia 00 (2019) 000–000 Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com Sci nceDire t Available online at www.sciencedirect.com ScienceDirect

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

Procedia Structural Integrity 33 (2021) 824–831

© 2021 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 the scientific committee of the IGF ExCo Abstract The realization of hybrid materials allows to achieve high mechanical performances; for this reason, FMLs (Fibre Metal Laminates), which are the combination of composite material and sheet metal, have been used for several applications in different fields, such as aeronautic, aerospace, and automotive. In fact, the best characteristics of both constituent materials are present in FMLs. In the present article, a numerical model is introduced to predict the flexural behaviour of FMLs by using FEM software. The model takes into consideration several phenomena developing in the specimens during the three-point bending loading, such as the material failure due to the normal stress, the progressive damaging, and the delamination due to the shear stress. In such a manner, to simulate different load conditions, given by disparate supports span, is possible. To validate the proposed numerical model, a comparative evaluation between the results obtained from the model and the experimental ones was carried out. The elevated similarity obtained, in terms of both load-displacement curves and failure modes, allowed concluding that the proposed model is suitable for simulating the mechanical behaviour of the FML materials. © 2021 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 Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo Keywords: Fibre metal laminates; CARALL; Flexural behaviour; Numerical simulation. 1. Introduction FMLs (Fibre Metal Laminates) are a type of hybrid material (Ostapiuk et al. (2017) and Ahmadi et al. (2011)); in fact, they consist in a stack of metal sheets alternated to fibre reinforced polymer layers, in order to obtain a material presenting a combination of the better structural characteristics of the metals and the composite materials, as Abstract The realization of hybrid materials allows to achieve high mechanical performances; for this reason, FMLs (Fibre Metal Laminates), which are the combination of c mposite material and sheet metal, hav been used for several appl cations in differen fields, such as aeronautic, erospace, and auto otive. In fact, th bes char ct ristics of both constituent mater als are present in FMLs. In the present articl , a numerical model is introduced o predict the flexural behaviour f FMLs by using FEM software. The model takes into consideration several phenomena d vel ping n specimens during the three-point bending l ading, suc as th m t rial failure du to the normal stress, the progress ve damaging, and the delamination due to th shear stress. In such a manner, to sim late different l ad conditions, given by disparate supports span, is possible. To validate the proposed n merical model, a co p rative valuation between the results obtained from the model and the experimental ones was carried out. The elevate similarity obtain d, in erms of both load-displacement curves and fai ure mod s, allow d concluding that the propos d model is suitable f r simulat g the mechanical behaviour of the FML m terials. © 2021 The Authors. Publi hed 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 Statement: Peer-review under responsibility of th scientifi committee of the IGF ExCo K ywords: Fibre metal laminates; CARALL; Flexural behaviour; Numerical simulation. 1. Introduction FMLs (Fibre Metal Laminates) are a type of hybrid material (Ostapiuk et al. (2017) and Ahmadi et al. (2011)); in fact, they consist in stack of metal sheets alternated to fibre reinforced polymer layers, in order to obt in a material presenting a combination th bett r tructural charact rist cs of the metals and the comp site materi ls, s IGF26 - 26th International Conference on Fracture and Structural Integrity CFRP/aluminium fibre metal laminates: numerical model for mechanical properties simulation Costanzo Bellini*, Vittorio Di Cocco, Francesco Iacoviello and Larisa Patricia Mocanu Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, via G. Di Biasio 43, 03043 Cassino, Italy IGF26 - 26th International Conference on Fracture and Structural Integrity CFRP/aluminium fibre metal laminates: numerical model for mechanical properties simulation Costanzo Bellini*, Vittorio Di Cocco, Francesco Iacoviello and Larisa Patricia Mocanu Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, via G. Di Biasio 43, 03043 Cassino, Italy

* Corresponding author. Tel.: +39 0776 299 3617. E-mail address: costanzo.bellini@unicas.it * Corresponding author. Tel.: +39 0776 299 3617. E-mail address: costanzo.bellini@unicas.it

2452-3216 © 2021 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 Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo 2452-3216 © 2021 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 Statement: Peer-revi w under responsibility of the scientifi committee of the IGF ExCo

2452-3216 © 2021 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 the scientific committee of the IGF ExCo 10.1016/j.prostr.2021.10.092