Shape-memory alloys
Shape memory alloys (SMAs) are smart materials possessing two unique properties known as pseudoelasticity and shape-memory effect. Thanks to such properties, SMAs are suitable for a variety of innovative applications in fields as biomedical, aerospace, robotics, mechanical, and civil engineering.
The aim of this activity is the development and numerical implementation of advanced constitutive models for SMAs. Several aspects of SMA behavior are addressed such as martensite variant reorientation mechanisms, smooth thermo-mechanical response, low-stress phase transformations, as well as transformation-dependent elastic properties. Experimental data on SMAs are used for models' validation and investigation of new modeling routes. Robust and efficient numerical algorithms are also proposed and implemented in an effective and user-friendly framework. SMA industrial components in different fields, e.g., mechanical, biomedical, earthquake engineering, are studied through finite element simulations.
Key publications:
F. Niccoli, G. Scalet, V. Giovinco, C. Garion, C. Maletta, P. Chiggiato, F. Auricchio, Novel C-Shaped Shape Memory Alloy Connectors for Vacuum Flanges: Modeling and Tests. Shap. Mem. Superelasticity (2023). (doi)
G. Scalet, A. Karakalas, L. Xu, D. Lagoudas, Finite Strain Constitutive Modelling of Shape Memory Alloys Considering Partial Phase Transformation with Transformation-Induced Plasticity. Shape Memory & Superelasticity, 7, 206-221, 2021. (post-peer-review) (doi)
F. Auricchio, C. Maletta, G. Scalet, E. Sgambitterra. Fatigue and fracture, in Shape Memory Alloy Engineering. Antonio Concilio, Ferdinando Auricchio, Elio Sacco, Vincenza Antonucci, Leonardo Lecce (eds), Butterworth-Heinemann - Elsevier, 195-243, 2021. (doi)
G. Scalet, F. Auricchio. Advanced constitutive modeling, in Shape Memory Alloy Engineering. Antonio Concilio, Ferdinando Auricchio, Elio Sacco, Vincenza Antonucci, Leonardo Lecce (eds), Butterworth-Heinemann - Elsevier, 345-379, 2021. (doi)
G. Scalet, F. Niccoli, C. Garion, P. Chiggiato, C. Maletta, F. Auricchio. A three-dimensional phenomenological model for shape memory alloys including two-way shape memory effect and plasticity, Mechanics of Materials, 136, 103085, 2019. (pre-print version) (doi)
M. Peigney, G. Scalet, F. Auricchio. A time integration algorithm for a 3D constitutive model for SMAs including permanent inelasticity and degradation effects, International Journal for Numerical Methods in Engineering, 115(9), 1053-1082, 2018. (pre-print version) (doi)
G. Scalet, M. Conti, F. Auricchio. Computational Analysis of Advanced Shape-Memory Alloy Devices Through a Robust Modeling Framework, Shape Memory and Superelasticity, 3(2), 109-123, 2017. (pre-print version) (doi)
G. Scalet, M. Peigney. A robust and efficient radial return algorithm based on incremental energy minimization for the 3D Souza-Auricchio model for shape memory alloys, European Journal of Mechanics - A/Solids, 61, 364-382, 2017. (pre-print version) (doi)
G. Scalet, F. Auricchio. Chapter 2.6 Shape Memory Alloys: Constitutive Modeling and Engineering Simulations, in Alloys and Intermetallic Compounds: From Modeling to Engineering. Cristina Artini (ed.), CRC Press - Taylor & Francis Group - A Science Publishers Book , 2017. (doi)
G. Scalet, F. Auricchio, D.J. Hartl. Efficiency and Effectiveness of Implicit and Explicit Approaches for the Analysis of Shape Memory Alloy Bodies, Journal of Intelligent Material Systems and Structures, 27(3), 384-402, 2016. (pre-print version) (doi)
M. Ferraro, F. Auricchio, E. Boatti, G. Scalet, M. Conti, S. Morganti, A. Reali. An Efficient Finite Element Framework to Assess Flexibility Performances of SMA Self-Expandable Carotid Artery Stents, Journal of Functional Biomaterials, 6(3), 585-597, 2015. (publish version) (doi)
F. Auricchio, E. Bonetti, G. Scalet, F. Ubertini. Theoretical and numerical modeling of shape memory alloys accounting for multiple phase transformations and martensite reorientation, International Journal of Plasticity, 59, 30-54, 2014 (featured in the SCIENCE DIRECT TOP 25 LIST of most downloaded articles - ranked 13th on the TOP 25 for IJP - April to June 2014). (pre-print version) (doi)
F. Auricchio, G. Scalet, M. Urbano. A Numerical/Experimental Study of Nitinol Actuator Springs. Journal of Materials Engineering and Performance, 23(7), 2420-2428, 2014. (pre-print version) (doi)