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Article: Thermoelastic damping in micro-beam resonators

TitleThermoelastic damping in micro-beam resonators
Authors
KeywordsGeneralized thermoelastic theory
Integration transformation
Micro-scale beam resonator
Thermoelastic damping
Issue Date2006
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijsolstr
Citation
International Journal Of Solids And Structures, 2006, v. 43 n. 10, p. 3213-3229 How to Cite?
AbstractThermoelastic damping is recognized as a significant loss mechanism at room temperature in micro-scale beam resonators. In this paper, the governing equations of coupled thermoelastic problems are established based on the generalized thermoelastic theory with one relaxation time. The thermoelastic damping of micro-beam resonators is analyzed by using both the finite sine Fourier transformation method combined with Laplace transformation and the normal mode analysis. The vibration responses of deflection and thermal moment are obtained for the micro-beams with simply supported and isothermal boundary conditions. The vibration frequency is analyzed for three boundary condition cases, i.e., the clamped and isothermal, the simply supported and isothermal, and the simply supported and adiabatic. The analytic results show that the amplitude of deflection and thermal moment are attenuated and the vibration frequency is increased with thermoelastic coupling effect being considered. In addition, it can be found from both the analytic results and the numerical calculations that these properties are size-dependent. When the thickness of the micro-beam is larger than its characteristic size, the effect of thermoelastic damping weakens as the beam thickness increases. The size-effect induced by thermoelastic coupling would disappear when the thickness of the micro-beam is over a critical value that depends on the material properties and the boundary conditions. © 2005 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/75956
ISSN
2015 Impact Factor: 2.081
2015 SCImago Journal Rankings: 1.597
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSun, Yen_HK
dc.contributor.authorFang, Den_HK
dc.contributor.authorSoh, AKen_HK
dc.date.accessioned2010-09-06T07:16:12Z-
dc.date.available2010-09-06T07:16:12Z-
dc.date.issued2006en_HK
dc.identifier.citationInternational Journal Of Solids And Structures, 2006, v. 43 n. 10, p. 3213-3229en_HK
dc.identifier.issn0020-7683en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75956-
dc.description.abstractThermoelastic damping is recognized as a significant loss mechanism at room temperature in micro-scale beam resonators. In this paper, the governing equations of coupled thermoelastic problems are established based on the generalized thermoelastic theory with one relaxation time. The thermoelastic damping of micro-beam resonators is analyzed by using both the finite sine Fourier transformation method combined with Laplace transformation and the normal mode analysis. The vibration responses of deflection and thermal moment are obtained for the micro-beams with simply supported and isothermal boundary conditions. The vibration frequency is analyzed for three boundary condition cases, i.e., the clamped and isothermal, the simply supported and isothermal, and the simply supported and adiabatic. The analytic results show that the amplitude of deflection and thermal moment are attenuated and the vibration frequency is increased with thermoelastic coupling effect being considered. In addition, it can be found from both the analytic results and the numerical calculations that these properties are size-dependent. When the thickness of the micro-beam is larger than its characteristic size, the effect of thermoelastic damping weakens as the beam thickness increases. The size-effect induced by thermoelastic coupling would disappear when the thickness of the micro-beam is over a critical value that depends on the material properties and the boundary conditions. © 2005 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijsolstren_HK
dc.relation.ispartofInternational Journal of Solids and Structuresen_HK
dc.subjectGeneralized thermoelastic theoryen_HK
dc.subjectIntegration transformationen_HK
dc.subjectMicro-scale beam resonatoren_HK
dc.subjectThermoelastic dampingen_HK
dc.titleThermoelastic damping in micro-beam resonatorsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0020-7683&volume=43&issue=10&spage=3213&epage=3229&date=2006&atitle=Thermoelastic+damping+in+micro-beam+resonatorsen_HK
dc.identifier.emailSoh, AK:aksoh@hkucc.hku.hken_HK
dc.identifier.authoritySoh, AK=rp00170en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.ijsolstr.2005.08.011en_HK
dc.identifier.scopuseid_2-s2.0-33645234882en_HK
dc.identifier.hkuros116475en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33645234882&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume43en_HK
dc.identifier.issue10en_HK
dc.identifier.spage3213en_HK
dc.identifier.epage3229en_HK
dc.identifier.isiWOS:000236788700018-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridSun, Y=12793120800en_HK
dc.identifier.scopusauthoridFang, D=7202133612en_HK
dc.identifier.scopusauthoridSoh, AK=7006795203en_HK

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