Issue 51

F. Frabbrocino et alii, Frattura ed Integrità Strutturale, 51 (2020) 410-422; DOI: 10.3221/IGF-ESIS.51.30 410 Focussed on IGF25 – Fracture and Structural Integrity International Conference 2019 Numerical modeling based on moving mesh method to simulate fast crack propagation Francesco Fabbrocino Pagaso University, Italy francesco.fabbrocino@unipegaso.it, https://orcid.org/0000-0001-8712-1048 Marco Francesco Funari, Fabrizio Greco, Paolo Lonetti University of Calabria, Italy marcofrancesco.funari@unical.it, https://orcid.org/0000-0001-9928-3036 f.greco@unical.it , https://orcid.org/0000-0001-9423-4964 lonetti@unical.it , https://orcid.org/0000-0003-0678-6860 Raimondo Luciano Partenope University, Italy raimondo.luciano@uniparthenope.it , https://orcid.org/0000-0002-8875-7774 A BSTRACT . An analysis to show the capability of moving mesh strategy to predict dynamic crack growth phenomena in 2D continuum media is proposed. The numerical method is implemented in the framework of the finite element method, which is coupled with moving mesh strategy to simulate the geometry variation produced by the crack tip motion. In particular, a computational procedure based on the combination of Fracture Mechanics concepts and Arbitrary Lagrangian-Eulerian approach (ALE) is developed. This represents a generalization of previous authors’ works in a dynamic framework to propose a unified approach for predicting crack propagation in both static and dynamic frameworks. The crack speed is explicitly evaluated at each time step by using a proper crack tip speed criterion, which can be expressed as a function of energy release rate or stress intensity factor. Experimental and numerical results are proposed to validate the proposed approach. Mesh dependence problem, computational efficiency and numerical complexity are verified by comparative results. K EYWORDS . Moving mesh method; Fracture Mechanics; Crack propagation; Fast crack growth. Citation: Fabbrocino, F., Funari, M. F., Greco, F., Lonetti, P., Luciano, R.., Numerical modeling based on moving mesh method to simulate fast crack propagation, Frattura ed Integrità Strutturale, 51 (2020) 410-422. Received: 09.10.2019 Accepted: 02.12.2019 Published: 01.01.2020 Copyright: © 2020 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.