The properties of NiTi based Belleville springs have been analyzed by numerical simulations and experimental tests. In particular, the unique features of these components, mainly due to stress and/or thermally-induced phase transformation mechanisms, have been preliminary analyzed by finite element simulations, by means of a special constitutive model for NiTi alloys. Subsequently, Belleville washers have been manufactured from a commercial pseudoelastic NiTi alloy, by disk cutting and a successive shape setting by a thermo-mechanical treatment. Furthermore, the thermo-mechanical response of the washers, in terms of isothermal force-deflection curve and thermal cycles between phase transition temperatures, has been experimentally analyzed. The experimental observations confirm the numerical results, i.e. the springs show a significant effect of the temperature on the characteristic curve as well as a marked hysteretic behavior. Due to these properties NiTi Belleville washers can be used as smart elastic elements, i.e. with tunable stiffness and damping, as well as solid state actuators. Furthermore, the marked hysteretic behavior of the washers, in terms of force-deflection response, is particularly useful for the realization of vibration and/or seismic absorbers.
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ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
September 18–21, 2011
Scottsdale, Arizona, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-5472-3
PROCEEDINGS PAPER
Modeling, Manufacturing and Experimental Characterization of NiTi Based Belleville Springs
Carmine Maletta,
Carmine Maletta
University of Calabria, Arcavacata di Rende, Italy
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Luigino Filice,
Luigino Filice
University of Calabria, Arcavacata di Rende, Italy
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Franco Furgiuele
Franco Furgiuele
University of Calabria, Arcavacata di Rende, Italy
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Carmine Maletta
University of Calabria, Arcavacata di Rende, Italy
Luigino Filice
University of Calabria, Arcavacata di Rende, Italy
Franco Furgiuele
University of Calabria, Arcavacata di Rende, Italy
Paper No:
SMASIS2011-4935, pp. 27-33; 7 pages
Published Online:
February 7, 2012
Citation
Maletta, C, Filice, L, & Furgiuele, F. "Modeling, Manufacturing and Experimental Characterization of NiTi Based Belleville Springs." Proceedings of the ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2. Scottsdale, Arizona, USA. September 18–21, 2011. pp. 27-33. ASME. https://doi.org/10.1115/SMASIS2011-4935
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