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Computational Mesoscale Modeling for the Mechanical Behavior of Fiber Reinforced Concrete
In the last decades, fiber-reinforced concrete (FRC) has emerged in the civil engineering industry. Due to its excellent mechanical properties and functionality as crack propagation control, several numerical investigations have been carried out to study these composites. However, only few technical standards are established for these materials. However, the increase in computational cost in order to explicitly represent the fibrous reinforcement in FE models and the strategies to simulate the interfacial relations between each phase are among the greatest challenges of mesoscale modeling. This paper proposes a numerical methodology to simulate the mechanical behavior of fiber-reinforced concrete in a mesoscale approach with the Finite Element Method (FEM). The mesoscale level is the fiber scale; in this sense, the cementitious matrix, the discrete and random fiber reinforcement, and the interfacial transition zone (ITZ) are explicitly represented in the computational models. Finally, the formulation is validated against experimental data available in the literature. Moreover, the simulations considering this new mesoscale element formulation present reliable results close to the experimental responses.
Computational Mesoscale Modeling for the Mechanical Behavior of Fiber Reinforced Concrete
In the last decades, fiber-reinforced concrete (FRC) has emerged in the civil engineering industry. Due to its excellent mechanical properties and functionality as crack propagation control, several numerical investigations have been carried out to study these composites. However, only few technical standards are established for these materials. However, the increase in computational cost in order to explicitly represent the fibrous reinforcement in FE models and the strategies to simulate the interfacial relations between each phase are among the greatest challenges of mesoscale modeling. This paper proposes a numerical methodology to simulate the mechanical behavior of fiber-reinforced concrete in a mesoscale approach with the Finite Element Method (FEM). The mesoscale level is the fiber scale; in this sense, the cementitious matrix, the discrete and random fiber reinforcement, and the interfacial transition zone (ITZ) are explicitly represented in the computational models. Finally, the formulation is validated against experimental data available in the literature. Moreover, the simulations considering this new mesoscale element formulation present reliable results close to the experimental responses.
Computational Mesoscale Modeling for the Mechanical Behavior of Fiber Reinforced Concrete
RILEM Bookseries
Serna, Pedro (editor) / Llano-Torre, Aitor (editor) / Martí-Vargas, José R. (editor) / Navarro-Gregori, Juan (editor) / Congro, Marcello (author) / Roehl, Deane (author) / Sanchez, Eleazar C. M. (author)
RILEM-fib International Symposium on Fibre Reinforced Concrete ; 2021 ; Valencia, Spain
Fibre Reinforced Concrete: Improvements and Innovations II ; Chapter: 31 ; 357-364
RILEM Bookseries ; 36
2021-09-05
8 pages
Article/Chapter (Book)
Electronic Resource
English
Mesoscale modeling of flexural fracture behavior in steel fiber reinforced concrete
| SAGE Publications | 2024