PSI - Issue 41

Umberto De Maio et al. / Procedia Structural Integrity 41 (2022) 598–609 Author name / Structural Integrity Procedia 00 (2019) 000–000

608

11

The numerical results, in terms of loading curve and crack patterns, have shown the ability of this model to identify with reasonable accuracy the complex nonlinear cracking processes occurring within the RC structural elements, such as crack onset and propagation, as well as crack branching and coalescence. Suitable comparisons with the available experimental results have clearly shown the superior effectiveness of the proposed approach over most of the existing smeared fracture approaches for the cracking analysis of RC structures. As a future perspective of this work, the proposed model could be employed to simulate the damage phenomena of RC frame buildings and bridges subjected to dynamic loading conditions ((Bruno et al., 2016)), incorporating the proposed fracture approach into a general adaptive multiscale approach, to improve the related computational performances, similarly to what has been suggested by (Greco et al., 2020a, 2020b, 2020c). Acknowledgments Fabrizio Greco and Paolo Nevone Blasi gratefully acknowledge financial support from the Italian Ministry of Education, University and Research (MIUR) under the P.R.I.N. 2017 National Grant “Multiscale Innovative Materials and Structures” (Project Code 2017J4EAYB; University of Calabria Research Unit). Andrea Pranno gratefully acknowledges financial support from the Italian Ministry of Education, University and Research (MIUR) under the PON 2014-2020 Azione IV.4 - Rep. N. 1062 of 10/08/2021. References Acierno, S., Barretta, R., Luciano, R., Marotti de Sciarra, F., Russo, P., 2017. Experimental evaluations and modeling of the tensile behavior of polypropylene/single-walled carbon nanotubes fibers. Composite Structures 174, 12–18. https://doi.org/10.1016/j.compstruct.2017.04.049 Alecci, V., De Stefano, M., Luciano, R., Rovero, L., Stipo, G., 2016. Experimental Investigation on Bond Behavior of Cement-Matrix–Based Composites for Strengthening of Masonry Structures. J. Compos. Constr. 20, 04015041. https://doi.org/10.1061/(ASCE)CC.1943 5614.0000598 Ammendolea, D., Greco, F., Lonetti, P., Luciano, R., Pascuzzo, A., 2021. Crack propagation modeling in functionally graded materials using Moving Mesh technique and interaction integral approach. Composite Structures 269, 114005. https://doi.org/10.1016/j.compstruct.2021.114005 Barretta, R., Fabbrocino, F., Luciano, R., de Sciarra, F.M., Ruta, G., 2020. Buckling loads of nano-beams in stress-driven nonlocal elasticity. Mechanics of Advanced Materials and Structures 27, 869–875. https://doi.org/10.1080/15376494.2018.1501523 Barretta, R., Fazelzadeh, S.A., Feo, L., Ghavanloo, E., Luciano, R., 2018. Nonlocal inflected nano-beams: A stress-driven approach of bi-Helmholtz type. Composite Structures 200, 239–245. https://doi.org/10.1016/j.compstruct.2018.04.072 Barretta, R., Luciano, R., Marotti de Sciarra, F., 2015. A Fully Gradient Model for Euler-Bernoulli Nanobeams. Mathematical Problems in Engineering 2015, 1–8. https://doi.org/10.1155/2015/495095 Barris, C., Torres, L., Vilanova, I., Miàs, C., Llorens, M., 2017. Experimental study on crack width and crack spacing for Glass-FRP reinforced concrete beams. Engineering Structures 131, 231–242. https://doi.org/10.1016/j.engstruct.2016.11.007 Borst, R. de, Remmers, J.J.C., Needleman, A., Abellan, M.-A., 2004. Discrete vs smeared crack models for concrete fracture: bridging the gap. Int. J. Numer. Anal. Meth. Geomech. 28, 583–607. https://doi.org/10.1002/nag.374 Breysse, D., 2010. Deterioration processes in reinforced concrete: an overview, in: Non-Destructive Evaluation of Reinforced Concrete Structures. Elsevier, pp. 28–56. https://doi.org/10.1533/9781845699536.1.28 Bruno, D., Lonetti, P., Pascuzzo, A., 2016. An optimization model for the design of network arch bridges. Computers & Structures 170, 13–25. https://doi.org/10.1016/j.compstruc.2016.03.011 C.E.-I du B. (CEB-FIP), 2013. CEB-FIP Model Code for concrete structures 2010. Červenka, J., Červenka, V., Laserna, S., 2018. On crack band model in finite element analysis of concrete fracture in engineering practice. Engineering Fracture Mechanics 197, 27–47. https://doi.org/10.1016/j.engfracmech.2018.04.010 De Maio, U., Cendón, D., Greco, F., Leonetti, L., Nevone Blasi, P., Planas, J., 2021. Investigation of concrete cracking phenomena by using cohesive fracture-based techniques: A comparison between an embedded crack model and a refined diffuse interface model. Theoretical and Applied Fracture Mechanics 115, 103062. https://doi.org/10.1016/j.tafmec.2021.103062 De Maio, U., Fabbrocino, F., Greco, F., Leonetti, L., Lonetti, P., 2019a. A study of concrete cover separation failure in FRP-plated RC beams via an inter-element fracture approach. Composite Structures 212, 625–636. https://doi.org/10.1016/j.compstruct.2019.01.025 De Maio, U., Fantuzzi, N., Greco, F., Leonetti, L., Pranno, A., 2020a. Failure Analysis of Ultra High-Performance Fiber-Reinforced Concrete Structures Enhanced with Nanomaterials by Using a Diffuse Cohesive Interface Approach. Nanomaterials 10, 1792. https://doi.org/10.3390/nano10091792 De Maio, U., Greco, F., Leonetti, L., Lonetti, P., Luciano, R., Nevone Blasi, P., 2020b. An Inter-element Fracture Approach for the Analysis of Concrete Cover Separation Failure in FRP-Reinforced RC Beams, in: Carcaterra, A., Paolone, A., Graziani, G. (Eds.), Proceedings of XXIV AIMETA Conference 2019, Lecture Notes in Mechanical Engineering. Springer International Publishing, Cham, pp. 537–549. https://doi.org/10.1007/978-3-030-41057-5_44 De Maio, U., Greco, F., Leonetti, L., Luciano, R., Nevone Blasi, P., Vantadori, S., 2020c. A refined diffuse cohesive approach for the failure analysis in quasibrittle materials—part I: Theoretical formulation and numerical calibration. Fatigue Fract Eng Mater Struct 43, 221–241. https://doi.org/10.1111/ffe.13107