Numerical Investigation of Flexural Behavior of Reinforced Concrete (RC) T-Beams Strengthened with Pre-Stressed Iron-Based (FeMnSiCrNi) Shape Memory Alloy Bars

Shape memory alloy (SMA) is a material that can change shape in response to external stimuli such as temperature, stress, or magnetic fields. SMA types include nitinol (nickel-titanium), copper-aluminum-nickel, copper-zinc-aluminum, iron-manganese-silicon, and various nickel-titanium-X alloys, each exhibiting unique properties for different applications. Reinforced concrete (RC) T-beams strengthened pre-stressed with Fe-SMA bars are numerically investigated their flexural under the influence of parameters. The embedded layer attached beam’s soffit. Based on numerical results, it was found increasing compression strength from 30 60 MPa slightly improves (by 2%), but significantly increases its ductility by approximately 45%. As opposed this, T-beam considerably improved using larger diameter bars. Specifically, 12 mm bar over 6 resulted 65% 47% greater ductility, respectively. Furthermore, this study examines importance considering flange design beams. It seen 500 width enhanced 25% compared rectangular-section beam. authors recommend further experimental work validate supplement calculations methodology used current analysis.