PSI - Issue 47

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000

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Procedia Structural Integrity 47 (2023) 261–267

© 2023 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 IGF27 chairpersons Abstract In the present paper, the influence of the contact boundary condition and specimen geometry on the concrete compressive strength is numerically investigated by using a version of the Lattice Discrete Element Method (LDEM), implemented on Abaqus/Explicit. More precisely, two types of contact boundary conditions are considered and, for each of them, three different slenderness levels (height/width ratio - h/b) are analyzed (that is, h/b = 0.5, 1.0, and 2.0) by considering a square cross-section. Moreover, for h/b = 2.0, a circular cross-section is also examined. Two models are developed: one by using the LDEM and the other by using a hybrid model, combining Finite Elements and LDEs. The results show that both the boundary conditions and the sample geometry influence the axial compressive strength. © 2023 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 IGF27 chairpersons Keywords: Abaqus; concrete; compressive strength; Lattice Discrete Element Method (LDEM) Abstract In the present paper, the influence of the contact boundary condition and specimen geometry on the concrete compressive strength is numerically investigated by using a version of the Lattice Discrete Element Method (LDEM), implemented on Abaqus/Explicit. More precisely, two types of contact boundary conditions are considered and, for each of them, three different slenderness levels (height/width ratio - h/b) are analyzed (that is, h/b = 0.5, 1.0, and 2.0) by considering a square cross-section. Moreover, for h/b = 2.0, a circular cross-section is also examined. Two models are developed: one by using the LDEM and the other by using a hybrid model, combining Finite Elements and LDEs. The results show that both the boundary conditions and the sample geometry influence the axial compressive strength. © 2023 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 IGF27 chairpersons Keywords: Abaqus; concrete; compressive strength; Lattice Discrete Element Method (LDEM) 27th International Conference on Fracture and Structural Integrity (IGF27) NUMERICAL ANALYSIS OF THE INFLUENCE OF THE CONTACT BOUNDARY CONDITION AND SPECIMEN GEOMETRY ON CONCRETE COMPRESSIVE STRENGTH Caroline Bremm a , Luísa Inda b , Leandro Ferreira Friedrich a, *, Sabrina Vantadori c , Ignacio Iturrioz d , Luis Kosteski a a Engineering Post Graduation Program, Federal University of Pampa, Av. Tiaraju 810, Alegrete, 97546-550, Brazil b Civil Engineering Graduate Program, Federal University of Pampa, Av. Tiaraju 810, Alegrete, 97546-550, Brazil c Program of Mechanical Pos-Graduation, Federal University of Rio Grande do Sul, Sarmento Leite 425,Porto Alegre, 90040-060, Brazil d Department of Engineering & Architecture, University of Parma, Parco Area delle Scienze 181/A, 43124 Parma, Italy 27th International Conference on Fracture and Structural Integrity (IGF27) NUMERICAL ANALYSIS OF THE INFLUENCE OF THE CONTACT BOUNDARY CONDITION AND SPECIMEN GEOMETRY ON CONCRETE COMPRESSIVE STRENGTH Caroline Bremm a , Luísa Inda b , Leandro Ferreira Friedrich a, *, Sabrina Vantadori c , Ignacio Iturrioz d , Luis Kosteski a a Engineering Post Graduation Program, Federal University of Pampa, Av. Tiaraju 810, Alegrete, 97546-550, Brazil b Civil Engineering Graduate Program, Federal University of Pampa, Av. Tiaraju 810, Alegrete, 97546-550, Brazil c Program of Mechanical Pos-Graduation, Federal University of Rio Grande do Sul, Sarmento Leite 425,Porto Alegre, 90040-060, Brazil d Department of Engineering & Architecture, University of Parma, Parco Area delle Scienze 181/A, 43124 Parma, Italy

* Corresponding author. Tel.: +55 55996378847 E-mail address: leandrofriedrich@unipampa.edu.br * Corresponding author. Tel.: +55 55996378847 E-mail address: leandrofriedrich@unipampa.edu.br

2452-3216 © 2023 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 IGF27 chairpersons 2452-3216 © 2023 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 IGF27 chairpersons

2452-3216 © 2023 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 IGF27 chairpersons 10.1016/j.prostr.2023.07.019