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Article: Laser-induced vibrations of micro-beams under different boundary conditions

TitleLaser-induced vibrations of micro-beams under different boundary conditions
Authors
KeywordsLaplace transformation
Microscale beam resonator
Size effect
Thermoelastic coupling
Issue Date2008
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijsolstr
Citation
International Journal Of Solids And Structures, 2008, v. 45 n. 7-8, p. 1993-2013 How to Cite?
AbstractIn this study, the vibration phenomenon during pulsed laser heating of a micro-beam is investigated. The beam is made of silicon and is heated by a non-Gaussian laser beam with a pulse duration of 2 ps, which incites vibration due to the thermoelastic damping effect. The coupling between the temperature field and stress field induces energy dissipation and converts mechanical energy into heat energy, which is irreversible. An analytical-numerical technique based on the Laplace transform is used to calculate the vibration of the deflection and thermal moment. A general algorithm of the inverse Laplace transform is developed. The validation of this algorithm is obtained through comparison with numerical results obtained by the FEMLAB software package. The effect of laser pulse energy absorption depth is studied. The size effect and the effect of different boundary conditions are also analyzed. Finally, the damping ratio and resonant frequency shift ratio of beams due to the air damping effect and the thermoelastic damping effect are compared. © 2007 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/76136
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.authorSaka, Men_HK
dc.contributor.authorSoh, AKen_HK
dc.date.accessioned2010-09-06T07:17:59Z-
dc.date.available2010-09-06T07:17:59Z-
dc.date.issued2008en_HK
dc.identifier.citationInternational Journal Of Solids And Structures, 2008, v. 45 n. 7-8, p. 1993-2013en_HK
dc.identifier.issn0020-7683en_HK
dc.identifier.urihttp://hdl.handle.net/10722/76136-
dc.description.abstractIn this study, the vibration phenomenon during pulsed laser heating of a micro-beam is investigated. The beam is made of silicon and is heated by a non-Gaussian laser beam with a pulse duration of 2 ps, which incites vibration due to the thermoelastic damping effect. The coupling between the temperature field and stress field induces energy dissipation and converts mechanical energy into heat energy, which is irreversible. An analytical-numerical technique based on the Laplace transform is used to calculate the vibration of the deflection and thermal moment. A general algorithm of the inverse Laplace transform is developed. The validation of this algorithm is obtained through comparison with numerical results obtained by the FEMLAB software package. The effect of laser pulse energy absorption depth is studied. The size effect and the effect of different boundary conditions are also analyzed. Finally, the damping ratio and resonant frequency shift ratio of beams due to the air damping effect and the thermoelastic damping effect are compared. © 2007 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.subjectLaplace transformationen_HK
dc.subjectMicroscale beam resonatoren_HK
dc.subjectSize effecten_HK
dc.subjectThermoelastic couplingen_HK
dc.titleLaser-induced vibrations of micro-beams under different boundary conditionsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0020-7683&volume=45&issue=7-8&spage=1993&epage=2013&date=2008&atitle=Laser-induced+vibrations+of+micro-beams+under+different+boundary+conditionsen_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.2007.11.006en_HK
dc.identifier.scopuseid_2-s2.0-38749151880en_HK
dc.identifier.hkuros144624en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-38749151880&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume45en_HK
dc.identifier.issue7-8en_HK
dc.identifier.spage1993en_HK
dc.identifier.epage2013en_HK
dc.identifier.isiWOS:000254471500008-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridSun, Y=12793120800en_HK
dc.identifier.scopusauthoridFang, D=7202133612en_HK
dc.identifier.scopusauthoridSaka, M=7103403203en_HK
dc.identifier.scopusauthoridSoh, AK=7006795203en_HK

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