Simulation of steel fibre reinforced concrete using RBCS discrete model

Mehrpay, Saeid; Ueda, Tamon

doi:10.1016/j.conbuildmat.2020.120889

Cited by 7 publications

(1 citation statement)

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“…Zhang et al (2023) used a similar equivalent method and subsequently conducted a three-dimensional tensile mesoscale simulation of fiber-reinforced concrete, taking into account the actual shape of aggregates. More recently, Mehrpay and Ueda, (2021) utilized a rigid body spring network model to investigate the uniaxial mechanical behavior of SFRC. They systematically clarified the effects of fiber content and geometric shape on crack patterns, stress distribution and stress-strain curves in SFRC.…”

Section: Introductionmentioning

confidence: 99%

Mesoscale modeling of flexural fracture behavior in steel fiber reinforced concrete

Yu,

Xu,

Chen

et al. 2024

Advances in Structural Engineering

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This paper presents a computational study on the flexural fracture behaviors of steel fiber reinforced concrete (SFRC). The focus is on investigating the impacts of various factors on SFRC, utilizing a discrete-continuum coupled finite element method. This method explicitly models each material phase, including coarse aggregates, mortar paste, steel fibers and interfacial transition zones (ITZs), allowing precise tracking of mesoscale cracking during bending. The simulation method is developed, calibrated and validated before conducting a parametric investigation. Critical factors considered include the spatial positioning of coarse aggregates and steel fibers, fiber content, length and diameter, and the bonding property of fiber-mortar ITZs. Results indicate that steel fibers modify crack development in notched beams, causing greater distortion in the primary crack. Increasing fiber content from 0 to 2% enhances flexural tensile strength but introduces more variability. Longer fibers initially increase strength, then decrease, while thicker fibers consistently reduce strength. Improving the bond between fibers and mortar does not substantially increase the load-bearing capacity of the beam. In conclusion, this study shows how the established approach enhances understanding of the mechanical responses of SFRC under flexural-fracture loading.

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Section: Introductionmentioning

confidence: 99%