PSI - Issue 28

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

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 28 (2020) 1981–1991

© 2020 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 European Structural Integrity Society (ESIS) ExCo Abstract This study presents a novel modeling strategy for predicting crack propagation phenomena in linear elastic continuum media under external loading conditions. The model combines the Moving Mesh method with Interaction integral approach in a FE framework. The former is used to reproduce the changes in the geometry caused by crack evolution, whereas the latter is adopted to evaluate the stress intensity factors (SIFs) to predict crack growth. The computational nodes are moved starting from a fixed referential coordinate system on the basis of a crack growth criterion, which predicts the direction of crack propagation at tip front. The mesh frame is changed, ensuring limited distortions of the elements by using a mesh regularization technique based on proper rezoning equations. This strategy also reduces re-meshing processes, which frequently occur in standard crack propagation FE procedures. The validity of the proposed model is verified through comparisons with existing experimental data and other advanced numerical approaches. © 2020 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 European Structural Integrity Society (ESIS) ExCo Keywords: Crack propagation; Finite element; Moving Mesh technique; ALE; Interaction integral 1st Virtual European Conference on Fracture Crack growth propagation modeling based on moving mesh method and interaction integral approach Domenico Ammendolea a , Fabrizio Greco a *, Paolo Lonetti a , Paolo Nevone Blasi a , Arturo Pascuzzo a a Department of Civil Engineering, University of Calabria, Via P. Bucci, Cubo 39B, 87036, Rende, Cosenza, Italy

1

Introduction In recent years, crack propagation modeling has generated considerable interest because of its effectiveness to

* Corresponding author. Tel.: +39-0984-496916; E-mail address: fabrizio.greco@unical.it

2452-3216 © 2020 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 European Structural Integrity Society (ESIS) ExCo

2452-3216 © 2020 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 European Structural Integrity Society (ESIS) ExCo 10.1016/j.prostr.2020.11.022