Título:	A simplified inverse analysis procedure for the stress-crack opening relationship of fiber-reinforced concrete
Autor(es):	Carvalho, Pedro Paulo Martins de Lameiras, Rodrigo de Melo
ORCID:	https://orcid.org/0000-0003-3804-9427
Afiliação do autor:	Federal University of Western Bahia, Center of Exact Sciences and Technologies, Barreiras University of Brasilia, Postgraduate Program in Structures and Civil Construction
Assunto:	Análise inversa Concreto reforçado Fibras de aço
Data de publicação:	28-Abr-2023
Editora:	MDPI
Referência:	A simplified inverse analysis procedure for the stress-crack opening relationship of fiber-reinforced concrete. Buildings, [S. l.], v. 13, 1166, 2023. DOI: https://doi.org/10.3390/buildings13051166. Disponível em: https://www.mdpi.com/2075-5309/13/5/1166. Acesso em: 03 jul. 2024.
Abstract:	The direct tensile test (DTT) is the most recommended test to determine the tensile behavior of fiber-reinforced concrete (FRC). However, this test is challenging to perform. Several studies have investigated inverse analysis to determine this behavior through simplified tests, such as the bending test. This study deals with developing a new approach to perform an inverse analysis for the three-point bending test (3PBT) involving FRC. A new proposed methodology concerns carrying out the inverse analysis procedure by parts. Initially, the parameters that influence the initial part of the stress–crack opening curve are adjusted. Progressively, the other parameters are adjusted considering the increment of the curve section. This procedure provides an implemented algorithm with more efficiency. A new strategy that deals with the establishment of criteria for parameters is proposed. Its results are compared with experimental data from other literature, whose steel fiberreinforced concrete (SFRC) tested characteristics present different attributes such as fibers, shape, and length. The proposed methodology obtained the stress–crack opening curves in direct tension with reasonable accuracy, indicating that this methodology can be helpful in the characterization of the post-cracking FRC behavior.
Unidade Acadêmica:	Faculdade de Tecnologia (FT) Departamento de Engenharia Civil e Ambiental (FT ENC)
Programa de pós-graduação:	Programa de Pós-Graduação em Estruturas e Construção Civil
Licença:	(CC BY) © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
DOI:	https://doi.org/10.3390/buildings13051166
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