Structural Behavior of Composite Beam Subjected to Impact Loading
DOI:
https://doi.org/10.31272/jeasd.2100Keywords:
Carbon Fiber Reinforced Polymer Bars, Composite Beam, Glass Fiber Reinforced Polymer Bars, Impact LoadAbstract
Composite beams are widely used members in different applications and are subjected to various loads. Impact load is one of the dynamic loads generated by falling objects striking structural members, producing a short-duration load. This load affects the member’s structural performance, reducing it. In this study, a composite beam with a pultruded I-section was numerically investigated using finite element software. The model was validated by a previous experimental model conducted by a previous researcher. The model consists of a pultruded I-section and 20 MPa concrete slabs; the parameters studied here are three concrete compressive strengths: 50, 75, and 100 MPa. Alternative reinforcement types to steel bars, such as Glass Fiber Reinforced Polymer (GFRP) and Carbon Fiber Reinforced Polymer (CFRP) bars, were also studied. It was found that increasing concrete compressive strength decreases the impact effect on the composite beam. When Glass Fiber Reinforced Polymer bars were used, the stiffness of the impacted beam was reduced by 40% and ductility by 25%, making them the most vulnerable bars under impact.
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Copyright (c) 2026 Ayad Hasan Jawad, Hesham A.Numan (Author)
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