PSI - Issue 28

Domenico Ammendolea et al. / Procedia Structural Integrity 28 (2020) 1981–1991 Author name / Structural Integrity Procedia 00 (2019) 000–000

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Fig. 9. Case 2: A pre-cracked rectangular plate with an off-center inclusion

5 Conclusions This study presents a new method for crack propagation simulation in homogeneous materials. The method embeds a moving mesh strategy based on the ALE formulation and the interaction integral approach in a FE framework. Crack propagation simulations are performed by modifying the computational nodes consistent with the evolution of the geometry domain. In this framework, standard fracture criterions can find the conditions of crack initiation and the directions of crack propagation. The proposed method is validated by comparisons with experimental and numerical data arising from different numeric methods. The crack paths are reproduced accurately for any examined case with relevant computational benefits. Acknowledgements This research was made possible by a financial support from the Italian Ministry of 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). References Barenblatt, G. I., 1962. The Mathematical Theory of Equilibrium Cracks in Brittle Fracture, in." Advances in Applied Mechanics" . Dryden, H. L., von Kármán, T., Kuerti, G., van den Dungen, F. H. and Howarth, L., Elsevier. 7: 55-129. Belytschko, T., Black, T., 1999. Elastic crack growth in finite elements with minimal remeshing. international Journal for Numerical Methods in Engineering 45, 601-620. Belytschko, T., Lu, Y. Y., Gu, L., 1995. Crack propagation by element-free Galerkin methods. Engineering Fracture Mechanics 51, 295-315. Bouchard, P. O., Bay, F., Chastel, Y., 2003. Numerical modelling of crack propagation: automatic remeshing and comparison of different criteria. Computer Methods in Applied Mechanics and Engineering 192, 3887-3908. Bruno, D., Greco, F., Lonetti, P., 2013. A fracture-ALE formulation to predict dynamic debonding in FRP strengthened concrete beams. Composites Part B: Engineering 46, 46-60. Bruno, D., Lonetti, P., Pascuzzo, A., 2016. An optimization model for the design of network arch bridges. Computers & Structures 170, 13-25. COMSOL, 2018. COMSOL Multiphysics® v. 5.4. Stockholm, Sweden. De Maio, U., Greco, F., Leonetti, L., Luciano, R., Nevone Blasi, P., Vantadori, S., 2019. A refined diffuse cohesive approach for the failure analysis in quasibrittle materials—part II: Application to plain and reinforced concrete structures. Fatigue and Fracture of Engineering Materials and Structures 42, 2764-2781. De Maio, U., Greco, F., Leonetti, L., Luciano, R., Nevone Blasi, P., Vantadori, S., 2020. A refined diffuse cohesive approach for the failure analysis in quasibrittle materials—part I: Theoretical formulation and numerical calibration. Fatigue and Fracture of Engineering Materials and Structures 43, 221-241. Dugdale, D. S., 1960. Yielding of steel sheets containing slits. Journal of the Mechanics and Physics of Solids 8, 100-104. Erdogan, F., Sih, G. C., 1963. On the Crack Extension in Plates Under Plane Loading and Transverse Shear. Journal of Basic Engineering 85, 519 525.