A simplified finite element model for assessing steel fibre reinforced concrete structural performance

Abbas, Ali A.; Mohsin, Sharifah Maszura Syed; Cotsovos, Demetrios M.

doi:10.1016/j.compstruc.2016.05.017

Cited by 25 publications

(11 citation statements)

References 29 publications

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“…It can be observed clearly from Figure 4 that the steel fibers ultimately exhibit a pull-out failure. This has also been observed in literatures (Abbas et al., 2016; Cho and Kim, 2003). In fact, the pull-out failure depends largely on the bond strength between the fibers and the surrounding concrete.…”

Section: Experimental Observations and Discussionsupporting

confidence: 87%

“…Eight-node solid element was ultilized to mesh the concrete and the beam element of equivalent flexural stiffness, cross sectional area and mass was adopted for the rebars. This is similar to that in the available publications (Abbas et al., 2016; Liao et al., 2016). Additionally, eight-node solid element was also employed to mesh the fixing and impact devices, i.e.…”

Section: Fe Simulationsupporting

confidence: 91%

“…In fact, the pull-out failure depends largely on the bond strength between the fibers and the surrounding concrete. When the tensile stress along the surface of the fiber is smaller than the bond strength, the addition of steel fibers exhibits ductile characteristic, as the fibers are able to undertake the tensile forces, which act in a direction normal to the plane of the crack (Abbas et al., 2016).

Figure 4.Profile of the crack surface for the beam having steel fibers (B-2-00). …”

Section: Experimental Observations and Discussionmentioning

confidence: 99%

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Experimental and numerical study of reinforced concrete beams with steel fibers subjected to impact loading

Jin

Zhang

Dou

et al. 2017

International Journal of Damage Mechanics

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As a kind of impact resistant material, steel fiber reinforced concrete (SFRC) has a good ductility and energy dissipation capacity by improving the tensile strength and impact toughness. To explore the dynamic mechanical behavior of SFRC beams subjected to impact loading, 12 simply-supported SFRC beams with different stirrup ratios (0%, 0.253% and 0.502%) and different volume fractions of steel fibers (0%, 1%, 2% and 3%) were tested with free-falling drop-weights impacting at the mid-span of specimens. The failure patterns were observed and videoed, and simultaneously, the time histories of the impact force, the reaction force, and the mid-span deflection were recorded. Moreover, the influences of stirrup ratio and volume fraction of steel fibers on the impact resistant behavior of the SFRC beams were preliminarily analyzed and discussed. The results indicate that the impact resistant performance of SFRC beams, such as crack pattern, ductility, energy consumption capacity, and deformation recovery capacity can be improved by the addition of steel fibers and stirrups. The required static capacity of these beams were calculated based on the analysis of reaction force vs. displacement loop and impact force vs. displacement loop as well as absorbed energy ratio. For further understanding the experimental results, finite element simulation of SFRC beams subjected to impact loading were carried out. The rationality and accuracy of the finite element model was illustrated by the good agreement between the test observations and the numerical results.

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Section: Experimental Observations and Discussionsupporting

confidence: 87%

Section: Fe Simulationsupporting

confidence: 91%

Figure 4.Profile of the crack surface for the beam having steel fibers (B-2-00). …”

Section: Experimental Observations and Discussionmentioning

confidence: 99%

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Experimental and numerical study of reinforced concrete beams with steel fibers subjected to impact loading

Jin

Zhang

Dou

et al. 2017

International Journal of Damage Mechanics

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“…(2015) predicted effectively the response of FRC members under extreme dynamic loadings using single-degree-of-freedom (SDOF). Considering the contribution of steel fibers on the post-cracking behavior, Abbas et al. (2016) presented a simplified finite element model for assessing SFRC structural performance and their model was proved to be capable of providing realistic predictions concerning the response of SFRC structural configurations exhibiting both ductile and brittle modes of failure without further recalibration.…”

Section: Introductionmentioning

confidence: 99%

Structural behavior of the steel fiber reinforced concrete beam under multiple impact loadings: An experimental investigation

Jin

Zhang

et al. 2019

International Journal of Damage Mechanics

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Steel fiber reinforced concrete (SFRC) has been proved to be an appropriate material to resist extreme dynamic loadings. To explore the structural behavior of the SFRC component under multiple impact loadings, eight beams with continuous rebars were tested with a drop hammer system. Crack patterns were observed while strains of rebar and concrete, deformation of beams, the impact and reaction forces as well as acceleration were recorded during the experiment. The structural performances were analyzed, and influences of steel fiber amount, stirrup ratio, concrete strength and the times of impact loading were discussed. The test observations indicated that compared with ordinary RC beams after the first impact, crack patterns of SFRC beams were changed from punching-shear to bending and the peak mid-span deflection is considerably reduced. Under multiple impact loadings, the crack patterns of SFRC beams are mainly determined by the first blow, and few new cracks will be generated by the subsequent loadings. The increment of maximum mid-span deflection, however, increases as the number of blow increases. The shapes of deflection curves and distribution of internal force (dynamic shear force) for SFRC beams under multiple impact loadings are significantly different from those under static loadings. Moreover, the magnitude of the shear force slightly increases while the peak impact force decreases with the increasing of impact times. With the increasing steel fiber amount, impact force and energy absorption capacity of SFRC beams were increased while the residual deflection was reduced.

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“…The mechanical modeling of composite materials can be done in a number of ways, such as with Finite Element Analysis (FEA) (e.g. Abbas et al [34]) or statistically via the Weibull distribution, often used to model tensile strength via weakest link theory, see e.g. Zhang et al [35].…”

Section: Introductionmentioning

confidence: 99%

Multiscale Shannon’s Entropy Modeling of Orientation and Distance in Steel Fiber Micro-Tomography Data

Chiverton

Ige

Barnett

et al. 2017

IEEE Trans. on Image Process.

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This paper is concerned with the modeling and analysis of the orientation and distance between steel fibers in X-ray micro-tomography data. The advantage of combining both orientation and separation in a model is that it helps provide a detailed understanding of how the steel fibers are arranged, which is easy to compare. The developed models are designed to summarize the randomness of the orientation distribution of the steel fibers both locally and across an entire volume based on multiscale entropy. Theoretical modeling, simulation, and application to real imaging data are shown here. The theoretical modeling of multiscale entropy for orientation includes a proof showing the final form of the multiscale taken over a linear range of scales. A series of image processing operations are also included to overcome interslice connectivity issues to help derive the statistical descriptions of the orientation distributions of the steel fibers. The results demonstrate that multiscale entropy provides unique insights into both simulated and real imaging data of steel fiber reinforced concrete.

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A simplified finite element model for assessing steel fibre reinforced concrete structural performance

Cited by 25 publications

References 29 publications

Experimental and numerical study of reinforced concrete beams with steel fibers subjected to impact loading

Experimental and numerical study of reinforced concrete beams with steel fibers subjected to impact loading

Structural behavior of the steel fiber reinforced concrete beam under multiple impact loadings: An experimental investigation

Multiscale Shannon’s Entropy Modeling of Orientation and Distance in Steel Fiber Micro-Tomography Data

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