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dc.contributor.authorTsai, Jia-Linen_US
dc.contributor.authorHuang, Hsin-Haouen_US
dc.contributor.authorSun, C. T.en_US
dc.date.accessioned2014-12-08T15:38:26Z-
dc.date.available2014-12-08T15:38:26Z-
dc.date.issued2010-12-01en_US
dc.identifier.issn0020-7403en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.ijmecsci.2010.09.010en_US
dc.identifier.urihttp://hdl.handle.net/11536/26311-
dc.description.abstractA first-order multi-displacement microstructure continuum model is introduced to represent a discrete diatomic lattice system. This model is developed based on a two-term Taylor series expansion of the local displacement of the lattice. It is found that the multi-displacement continuum model obtained by keeping two terms in the Taylor series yields, in general, a better representation of the lattice system than the effective modulus model. However, this microstructure continuum model cannot characterize the negative group velocity of an optical mode of harmonic wave motion in the diatomic lattice. To capture the negative group velocity, a higher-order multi-displacement continuum model is necessary. (C) 2010 Elsevier Ltd. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectLatticeen_US
dc.subjectMulti-displacement continuum theoryen_US
dc.subjectWave propagationen_US
dc.subjectNegative group velocityen_US
dc.titleMulti-displacement continuum model for discrete systemsen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.ijmecsci.2010.09.010en_US
dc.identifier.journalINTERNATIONAL JOURNAL OF MECHANICAL SCIENCESen_US
dc.citation.volume52en_US
dc.citation.issue12en_US
dc.citation.spage1767en_US
dc.citation.epage1771en_US
dc.contributor.department機械工程學系zh_TW
dc.contributor.departmentDepartment of Mechanical Engineeringen_US
dc.identifier.wosnumberWOS:000284967400021-
dc.citation.woscount0-
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