Factors controlling superelastic damping
Result description
The extent to which the stress induced martensitic transformation displays the hysteretic nature predetermines the use of the superelasticity for passive damping purposes. As the occurrence of the superelastic behaviour depends on the external conditionsthe SMAs are subjected to, the efficiency of the superelastic damping is presumably influenced by the operating conditions of SMA dampers. Therefore, we identified experimentally the dependence of the superelastic damping of a commercially available thin NiTi wire on several operating parameters such as vibration amplitude, prestrain, temperature of surroundings, and frequency. Furthermore, a phenomenological SMA model coupled with the heat equation was used to explain the frequency dependence of the superelastic damping. The conducted analysis showed clearly that the superelastic damping can be used efficiently only while setting the operating conditions within a limited range.
Keywords
shape memory alloyssuperelastic dampingthermomechanical testing
The result's identifiers
Result code in IS VaVaI
Alternative codes found
RIV/61388998:_____/10:00348281
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Factors controlling superelastic damping
Original language description
The extent to which the stress induced martensitic transformation displays the hysteretic nature predetermines the use of the superelasticity for passive damping purposes. As the occurrence of the superelastic behaviour depends on the external conditionsthe SMAs are subjected to, the efficiency of the superelastic damping is presumably influenced by the operating conditions of SMA dampers. Therefore, we identified experimentally the dependence of the superelastic damping of a commercially available thin NiTi wire on several operating parameters such as vibration amplitude, prestrain, temperature of surroundings, and frequency. Furthermore, a phenomenological SMA model coupled with the heat equation was used to explain the frequency dependence of the superelastic damping. The conducted analysis showed clearly that the superelastic damping can be used efficiently only while setting the operating conditions within a limited range.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
School and Symposium on Smart Structural Systems Technologies
ISBN
978-989-96697-0-3
ISSN
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e-ISSN
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Number of pages
17
Pages from-to
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Publisher name
FEUP
Place of publication
Porto
Event location
Porto
Event date
Apr 6, 2010
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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Basic information
Result type
D - Article in proceedings
CEP
BM - Solid-state physics and magnetism
Year of implementation
2010