Thermo-mechanical strain rate-dependent behavior of shape memory alloys as vibration dampers and comparison to conventional dampers

Persistent Link:
http://hdl.handle.net/10150/615541
Title:
Thermo-mechanical strain rate-dependent behavior of shape memory alloys as vibration dampers and comparison to conventional dampers
Author:
Gur, S.; Mishra, S. K.; Frantziskonis, G. N.
Affiliation:
Univ Arizona, Dept Civil Engn & Engn Mech
Issue Date:
2015-05-31
Publisher:
SAGE PUBLICATIONS LTD
Citation:
Thermo-mechanical strain rate-dependent behavior of shape memory alloys as vibration dampers and comparison to conventional dampers 2015, 27 (9):1250 Journal of Intelligent Material Systems and Structures
Journal:
Journal of Intelligent Material Systems and Structures
Rights:
© The Author(s) 2015
Collection Information:
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
Abstract:
A study on shape memory alloy materials as vibration dampers is reported. An important component is the strain rate-dependent and temperature-dependent constitutive behavior of shape memory alloy, which can significantly change its energy dissipation capacity under cyclic loading. The constitutive model used accounts for the thermo-mechanical strain rate-dependent behavior and phase transformation. With increasing structural flexibility, the hysteretic loop size of shape memory alloy dampers increases due to increasing strain rates, thus further decreasing the response of the structure to cyclic excitation. The structure examined is a beam, and its behavior with shape memory alloy dampers is compared to the same beam with conventional dampers. Parametric studies reveal the superior performance of the shape memory alloy over the conventional dampers even at the resonance frequency of the beam-damper system. An important behavior of the shape memory alloy dampers is discovered, in that they absorb energy from the fundamental and higher vibration modes. In contrast, the conventional dampers transfer energy to higher modes. For the same beam control, the stiffness requirement for the shape memory alloy dampers is significantly less than that of the conventional dampers. Response quantities of interest show improved performance of the shape memory alloy over the conventional dampers under varying excitation intensity, frequency, temperature, and strain rate.
ISSN:
1045-389X; 1530-8138
DOI:
10.1177/1045389X15588628
Keywords:
Shape memory alloy damper; thermo-mechanical model; strain rate effects; temperature effects; nonlinear dynamic analysis; vibration control
Version:
Final accepted manuscript
Additional Links:
http://jim.sagepub.com/cgi/doi/10.1177/1045389X15588628

Full metadata record

DC FieldValue Language
dc.contributor.authorGur, S.en
dc.contributor.authorMishra, S. K.en
dc.contributor.authorFrantziskonis, G. N.en
dc.date.accessioned2016-07-05T19:54:07Z-
dc.date.available2016-07-05T19:54:07Z-
dc.date.issued2015-05-31-
dc.identifier.citationThermo-mechanical strain rate-dependent behavior of shape memory alloys as vibration dampers and comparison to conventional dampers 2015, 27 (9):1250 Journal of Intelligent Material Systems and Structuresen
dc.identifier.issn1045-389X-
dc.identifier.issn1530-8138-
dc.identifier.doi10.1177/1045389X15588628-
dc.identifier.urihttp://hdl.handle.net/10150/615541-
dc.description.abstractA study on shape memory alloy materials as vibration dampers is reported. An important component is the strain rate-dependent and temperature-dependent constitutive behavior of shape memory alloy, which can significantly change its energy dissipation capacity under cyclic loading. The constitutive model used accounts for the thermo-mechanical strain rate-dependent behavior and phase transformation. With increasing structural flexibility, the hysteretic loop size of shape memory alloy dampers increases due to increasing strain rates, thus further decreasing the response of the structure to cyclic excitation. The structure examined is a beam, and its behavior with shape memory alloy dampers is compared to the same beam with conventional dampers. Parametric studies reveal the superior performance of the shape memory alloy over the conventional dampers even at the resonance frequency of the beam-damper system. An important behavior of the shape memory alloy dampers is discovered, in that they absorb energy from the fundamental and higher vibration modes. In contrast, the conventional dampers transfer energy to higher modes. For the same beam control, the stiffness requirement for the shape memory alloy dampers is significantly less than that of the conventional dampers. Response quantities of interest show improved performance of the shape memory alloy over the conventional dampers under varying excitation intensity, frequency, temperature, and strain rate.en
dc.language.isoenen
dc.publisherSAGE PUBLICATIONS LTDen
dc.relation.urlhttp://jim.sagepub.com/cgi/doi/10.1177/1045389X15588628en
dc.rights© The Author(s) 2015en
dc.subjectShape memory alloy damperen
dc.subjectthermo-mechanical modelen
dc.subjectstrain rate effectsen
dc.subjecttemperature effectsen
dc.subjectnonlinear dynamic analysisen
dc.subjectvibration controlen
dc.titleThermo-mechanical strain rate-dependent behavior of shape memory alloys as vibration dampers and comparison to conventional dampersen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Dept Civil Engn & Engn Mechen
dc.identifier.journalJournal of Intelligent Material Systems and Structuresen
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal accepted manuscripten
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