Computational Modelling of Concrete Structures 2018
DOI: 10.1201/9781315182964-102
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Multiscale modeling of steel fiber reinforced concrete based on the use of coupling finite elements and mesh fragmentation technique

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Cited by 3 publications
(6 citation statements)
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“…The contributions are provided by investigating the effect of temperature on the microstructural, physical, and tensile properties of the fibers, as well as their bond-slip behavior. Lastly, the results may be employed for the parameterization of numerical models that require the characterization of the fibersas it is the case of explicit models that were recently proposed [138,139]. Prospective research topics can arise from the results obtained, such as: 1) the quantitative investigation of the mineralogical changes in the fiber-matrix ITZ as a function of temperature; 2) the effect of surface modification of fibers on the thermal-related bond-slip properties; 3) the implementation and validation of a thermo-mechanical numerical model with discrete and explicit representation of the fibers in the matrix.…”
Section: Results and Analysis 41 Thermal Effects On The Bond-slip Mechanismmentioning
confidence: 99%
“…The contributions are provided by investigating the effect of temperature on the microstructural, physical, and tensile properties of the fibers, as well as their bond-slip behavior. Lastly, the results may be employed for the parameterization of numerical models that require the characterization of the fibersas it is the case of explicit models that were recently proposed [138,139]. Prospective research topics can arise from the results obtained, such as: 1) the quantitative investigation of the mineralogical changes in the fiber-matrix ITZ as a function of temperature; 2) the effect of surface modification of fibers on the thermal-related bond-slip properties; 3) the implementation and validation of a thermo-mechanical numerical model with discrete and explicit representation of the fibers in the matrix.…”
Section: Results and Analysis 41 Thermal Effects On The Bond-slip Mechanismmentioning
confidence: 99%
“…The steel fibers are discretely represented embedded into the finite element mesh with no additional degrees of freedom and the fiber-matrix interaction is considered implicitly in the model. Bitencourt Jr. (2015) and Bitencourt Jr. et al (2018a) presented a model to simulate the post-cracking behavior of SFRC based on the use of mesh fragmentation technique proposed by 7 1.3 State of the art Manzoli et al (2016). In this approach the interface finite element (IFE) with high aspect ratio described by a continuum damage model (Manzoli et al, 2012) was used to simulate the failure process of the matrix, while the CFEs was applied to described the fiber-matrix interface allowing a discrete and explicit representation of steel fibers.…”
Section: Numerical Approaches For Modeling the Post-cracking Behaviormentioning
confidence: 99%
“…Em suma, duas estratégias de representação do compósito são adotadas. Na primeira, as variáveis que influenciam o comportamento do compósito são consideradas na formulação dos modelos constitutivos baseados na mecânica do contínuo (Padmarajaiah and Ramaswamy, 2002), enquanto que a segunda estratégia, consiste na representação discreta das fibras (Cunha et al, 2012; 1.2 Estado da arte Etse et al, 2012;Pros et al, 2012;Bitencourt Jr., 2015;Bitencourt Jr. et al, 2018, 2019Carvalho et al, 2020;Yang et al, 2021), as quais também são representadas explicitamente em alguns desses modelos (Cunha et al, 2012;Bitencourt Jr., 2015;Bitencourt Jr. et al, 2018, 2019Yang et al, 2021).…”
Section: Lista De Figurasunclassified
“…As armaduras e fibras metálicas são representadas de forma discreta e explícita, e com a utilização de elementos finitos de acoplamento (EFA) para descrever a interação do reforço-matriz, mesma abordagem proposta por Bitencourt Jr. et al (2019) e Bitencourt Jr. et al (2018b. As principais propriedades e características dos modelos serão descritas a seguir.…”
Section: Representação Explícita E Discreta Dos Reforçosunclassified
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