PSI - Issue 51

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

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 51 (2023) 9–16

© 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 scientific committee of the ICSID 2022 Organizers Abstract The demand for fibre-reinforced polymer (FRP) composites has been increasing in the last decades due to their excellent mechanical properties when compared to traditional materials. However, this class of materials has a more complex stress-strain response, which requires improved design methodologies. To take advantage of these unique characteristics and efficiently design structures, the usage of finite element analysis to predict progressive failure can be a powerful tool. Hence, in the present study, a method for predicting the initialization and progression of matrix and fibre damage in fibre-reinforced polymer composites was implemented using Puck’s failure criterion and the Element Weakening Method (EWM). This numerical approach was validated using Digital Image Correlation (DIC) measurements and monotonic tensile tests to evaluate the ultimate load. The results show that the implemented method is able to predict the strain field at the specimen surface as well as the ultimate load level. © 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 scientific committee of the ICSID 2022 Organizers Keywords: Failure criterion; fiber-reinforced polymer composites; Puck’s failure criterion; element weaking method 1. Introduction With the urge to reduce global carbon gas emissions, fibre-reinforced polymer (FRP) composites have been the primary choice in a wide range of applications where light and strong materials are required from naval to automotive Abstract The demand for fibre-reinforced polymer (FRP) composites has been increasing in the last decades due to their excellent mechanical properties when compared to traditional materials. However, this class of materials has a more complex stress-strain response, which requires improved design methodologies. To take advantage of these unique characteristics and efficiently design structures, the usage of finite element analysis to predict progressive failure can be a powerful tool. Hence, in the present study, a method for predicting the initialization and progression of matrix and fibre damage in fibre-reinforced polymer composites was implemented using Puck’s failure criterion and the Element Weakening Method (EWM). This numerical approach was validated using Digital Image Correlation (DIC) measurements and monotonic tensile tests to evaluate the ultimate load. The results show that the implemented method is able to predict the strain field at the specimen surface as well as the ultimate load level. © 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 scientific committee of the ICSID 2022 Organizers Keywords: Failure criterion; fiber-reinforced polymer composites; Puck’s failure criterion; element weaking method 1. Introduction With the urge to reduce global carbon gas emissions, fibre-reinforced polymer (FRP) composites have been the primary choice in a wide range of applications where light and strong materials are required from naval to automotive 6th International Conference on Structural Integrity and Durability (ICSID 2022) Numerical modelling of progressive failure in fiber-reinforced polymer composites under quasi-static loading Hugo Vidinha a , Ricardo Branco a *, Maria Augusta Neto a , Ana M. Amaro a , Paulo Reis a a CEMMPRE, Department of Mechanical Engineering, University of Coimbra, Rua Luis Reis Santos, 3030-788 Coimbra, Portugal 6th International Conference on Structural Integrity and Durability (ICSID 2022) Numerical modelling of progressive failure in fiber-reinforced polymer composites under quasi-static loading Hugo Vidinha a , Ricardo Branco a *, Maria Augusta Neto a , Ana M. Amaro a , Paulo Reis a a CEMMPRE, Department of Mechanical Engineering, University of Coimbra, Rua Luis Reis Santos, 3030-788 Coimbra, Portugal

* Corresponding author. Tel.: +351-239790700; fax: +351- 239403407. E-mail address: ricardo.branco@dem.uc.pt * Corresponding author. Tel.: +351-239790700; fax: +351- 239403407. E-mail address: ricardo.branco@dem.uc.pt

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 scientific committee of the ICSID 2022 Organizers 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 scientific committee of the ICSID 2022 Organizers

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 scientific committee of the ICSID 2022 Organizers 10.1016/j.prostr.2023.10.060