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Modeling of Fiber-Reinforced Concrete and Finite Element Method


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DOI: https://doi.org/10.15866/irece.v12i1.18636

Abstract


The article deals with approaches to the modeling of fiber-reinforced concrete with the finite element method and nonlinear analysis. The article aims to determine the input parameters and the mechanical properties for the selected modeling approaches. The chosen fiber-reinforced concrete has the dosage of 75 kg/m3 and two series, which differ, in the type of fiber. For determining the basic mechanical properties, destructive methods have been used. Their purpose has been to determine the compressive strength and the tensile strength. The three-point flexural tensile strength test has included the evaluation of load-displacement diagrams, which have been utilized during numerical modeling. Numerical modeling is based on a 3D computational model in the finite element method and on the fracture-plastic material model. The conclusion includes differences during modeling depending on the type of fiber used.
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Keywords


Fiber-Reinforced Concrete; Tensile Strength; Load-Displacement Diagram; Fracture Energy

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