PSI - Issue 61

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Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000 ScienceDirect

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Procedia Structural Integrity 61 (2024) 305–314

© 2024 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 IWPDF 2023 Chairman © 2024 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 IWPDF 2023 Abstract A high-fidelity finite element model is constructed to simulate the low-velocity line-impact experiments conducted previously by Bozkurt and Coker on [0 5 /90 3 ] s CFRP beam specimens. In the finite element simulations, we implemented a three-dimensional continuum damage model with LaRC05 criterion for matrix cracking, and employed the built-in cohesive zone model at the 0°/90° interfaces for delamination in ABAQUS/Explicit. Recognizing the significant influence of boundary supports on the global impact response and deformation fields, we propose a heuristic approach for modeling boundary conditions, which involves replicating the experiment's boundaries by incorporating DIC data-tuned spring elements at the corresponding boundary nodes. The simulation results then demonstrated improved agreement with experimental findings in terms of global impact response, strain fields, and delamination force and displacement. © 2024 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 IWPDF 2023 3rd International Workshop on Plasticity, Damage and Fracture of Engineering Materials (IWPDF 2023) Numerical simulations of low-velocity impact experiments on cross-ply CFRP beams using a heuristic boundary conditions approach with spring elements Onur Ali Batmaz a,b , Mirac Onur Bozkurt a,b , Ercan Gurses a , Demirkan Coker a,b* 3rd International Workshop on Plasticity, Damage and Fracture of Engineering Materials (IWPDF 2023) Numerical simulations of low-velocity impact experiments on cross-ply CFRP beams using a heuristic boundary conditions approach with spring elements Onur Ali Batmaz a,b , Mirac Onur Bozkurt a,b , Ercan Gurses a , Demirkan Coker a,b* a Department of Aerospace Engineering, Middle East Technical University, Ankara 06800, Türkiye b RUZGEM - Center for Wind Energy Research, Middle East Technical University, Ankara 06800, Türkiye a Department of Aerospace Engineering, Middle East Technical University, Ankara 06800, Türkiye b RUZGEM - Center for Wind Energy Research, Middle East Technical University, Ankara 06800, Türkiye Abstract A high-fidelity finite element model is constructed to simulate the low-velocity line-impact experiments conducted previously by Bozkurt and Coker on [0 5 /90 3 ] s CFRP beam specimens. In the finite element simulations, we implemented a three-dimensional continuum damage model with LaRC05 criterion for matrix cracking, and employed the built-in cohesive zone model at the 0°/90° interfaces for delamination in ABAQUS/Explicit. Recognizing the significant influence of boundary supports on the global impact response and deformation fields, we propose a heuristic approach for modeling boundary conditions, which involves replicating the experiment's boundaries by incorporating DIC data-tuned spring elements at the corresponding boundary nodes. The simulation results then demonstrated improved agreement with experimental findings in terms of global impact response, strain fields, and delamination force and displacement. Keywords: Low-velocity impact; Finite element analysis; Polymer-matrix composites; Boundary conditions

Keywords: Low-velocity impact; Finite element analysis; Polymer-matrix composites; Boundary conditions

* Corresponding author. Tel.: +90-312-210-4257; fax: +90-312-210-4250 E-mail address: coker@metu.edu.tr

2452-3216 © 2024 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 IWPDF 2023 2452-3216 © 2024 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 IWPDF 2023 * Corresponding author. Tel.: +90-312-210-4257; fax: +90-312-210-4250 E-mail address: coker@metu.edu.tr

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