The thermo-mechanical properties of Nickel-Titanium based Belleville washers have been analyzed by numerical simulations. In fact, these components exhibit unique mechanical and functional features due to the reversible stress-induced and/or thermally-induced phase transition mechanism of NiTi alloys. The numerical simulations have been carried out by using a commercial finite element software code and a special constitutive model for SMAs. The effects of the geometrical configuration of the washers as well as of the operating temperature, under fully austenitic conditions, have been analyzed. The results highlighted a marked hysteretic response, in terms of force-deflection curve, due to the hysteresis in the stress-strain behavior of NiTi alloys. In addition, a marked influence of the geometry, as well as of the temperature, has been observed on the thermo-mechanical response of the washer, i.e. in terms of both mechanical and functional properties.
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ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
September 19–21, 2012
Stone Mountain, Georgia, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-4509-7
PROCEEDINGS PAPER
Force-Deflection Characteristics of SMA-Based Belleville Springs
Franco Furgiuele,
Franco Furgiuele
University of Calabria, Rende, CS, Italy
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Carmine Maletta,
Carmine Maletta
University of Calabria, Rende, CS, Italy
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Emanuele Sgambitterra
Emanuele Sgambitterra
University of Calabria, Rende, CS, Italy
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Franco Furgiuele
University of Calabria, Rende, CS, Italy
Carmine Maletta
University of Calabria, Rende, CS, Italy
Emanuele Sgambitterra
University of Calabria, Rende, CS, Italy
Paper No:
SMASIS2012-8203, pp. 545-551; 7 pages
Published Online:
July 24, 2013
Citation
Furgiuele, F, Maletta, C, & Sgambitterra, E. "Force-Deflection Characteristics of SMA-Based Belleville Springs." Proceedings of the ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Structural Health Monitoring. Stone Mountain, Georgia, USA. September 19–21, 2012. pp. 545-551. ASME. https://doi.org/10.1115/SMASIS2012-8203
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