PSI - Issue 64

Ali Saeedi et al. / Procedia Structural Integrity 64 (2024) 2044–2050 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

2050

7

4. Conclusion This study investigated multiphysics modeling to analyze the activation behavior of Fe-SMA reinforced concrete specimens, focusing on the impact of activation and geometrical parameters, including activation voltage, reinforcement shape, and size. The findings reveal that, for a given cross-sectional area, bar-shaped reinforcements achieve significantly higher temperatures upon activation compared to strip-shaped ones under identical activation conditions. Furthermore, the selection of activation voltage should be tailored based on the reinforcement type, size, and the physical properties of both the reinforcement and concrete. The developed multiphysics model has proven effective in determining the necessary activation parameters by incorporating the geometrical and physical characteristics of the Fe-SMA and the concrete it reinforces. This model serves as a valuable tool for optimizing the design and application of Fe-SMA reinforced concrete structures. References Abouali, S., Shahverdi, M., Ghassemieh, M., & Motavalli, M. 2019. Nonlinear simulation of reinforced concrete beams retrofitted by near-surface mounted iron-based shape memory alloys. Engineering Structures, 187, 133-148. Czaderski, C., Shahverdi, M., Brönnimann, R., Leinenbach, C., & Motavalli, M. 2014. Feasibility of iron-based shape memory alloy strips for prestressed strengthening of concrete structures. Construction and Building Materials, 56, 94-105. Saeedi, A., & Shokrieh, M. M. 2017. Effect of shape memory alloy wires on the enhancement of fracture behavior of epoxy polymer. Polymer Testing, 64, 221-228. Schranz, B., Michels, J., Czaderski, C., Motavalli, M., Vogel, T., & Shahverdi, M. 2021. Strengthening and prestressing of bridge decks with ribbed iron-based shape memory alloy bars. Engineering Structures, 241, 112467. Shahverdi, M., Czaderski, C., Annen, P., & Motavalli, M. 2016. Strengthening of RC beams by iron-based shape memory alloy bars embedded in a shotcrete layer. Engineering Structures, 117, 263-273. Shahverdi, M., Michels, J., Czaderski, C., & Motavalli, M. 2018. Iron-based shape memory alloy strips for strengthening RC members: Material behavior and characterization. Construction and Building Materials, 173, 586-599.