Shape memory alloy actuators have been studied for more than thirty years. Many experimental tests have been performed, and several patents have been registered. However, designing such devices is still a challenging task. On the one hand, models are not yet able to provide the accuracy required to replace a substantial portion of the experimental tests; on the other hand, it seems that a gap exists in the literature between the main ideas behind SMA torsional actuators and their actual implementation. This work is a systematic effort to fill this gap, helping researchers and designers in developing SMA torsional actuators with a particular focus on aeronautical applications. This paper reports all the steps toward the preliminary design of such devices, using a state-of-theart, commercially available FEM software. Moreover, the SMA rods’ behaviour under mechanical and thermal loading is thoroughly examined, looking at monitoring stress, temperature, torque and martensite evolution simultaneously, and thus providing a holistic vision of the macroscopic phenomena involved during phase transformations. Simple aerodynamic load predictions are also performed, using Xfoil for three classes of aircraft (medium size UAV, Four-Seat Aircraft and Regional Transport Aircraft)
Understanding Shape Memory Alloy Torsional Actuators: From the Conceptual to the Preliminary Design / Sansone, Mario; Ameduri, Salvatore; Concilio, Antonio; Cestino, Enrico. - In: ACTUATORS. - ISSN 2076-0825. - ELETTRONICO. - 11:3(2022), p. 81. [10.3390/act11030081]
Titolo: | Understanding Shape Memory Alloy Torsional Actuators: From the Conceptual to the Preliminary Design | |
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Data di pubblicazione: | 2022 | |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.3390/act11030081 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11583/2957696