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Transformation of body force localized near the surface of a half-space into equivalent surface stresses

hal.structure.identifierInstitut de Mécanique et d'Ingénierie de Bordeaux [I2M]
hal.structure.identifierDépartement Imagerie et Simulation pour le Contrôle (CEA, LIST) [DISC (CEA, LIST)]
dc.contributor.authorROUGE, Clémence
hal.structure.identifierDépartement Imagerie et Simulation pour le Contrôle (CEA, LIST) [DISC (CEA, LIST)]
dc.contributor.authorLHÉMERY, Alain
hal.structure.identifierDépartement Imagerie et Simulation pour le Contrôle (CEA, LIST) [DISC (CEA, LIST)]
dc.contributor.authorSÉGUR, Damien
dc.date.accessioned2021-05-14T09:48:01Z
dc.date.available2021-05-14T09:48:01Z
dc.date.issued2013-10
dc.identifier.issn0001-4966
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/77084
dc.description.abstractEnAn electromagnetic acoustic transducer (EMAT) or a laser used to generate elastic waves in a component is often described as a source of body force confined in a layer close to the surface. On the other hand, models for elastic wave radiation more efficiently handle sources described as distributions of surface stresses. Equivalent surface stresses can be obtained by integrating thebody force with respect to depth. They are assumed to generate the same field as the one that would be generated by the body force. Such an integration scheme can be applied to Lorentz force for conventional EMAT configuration. When applied to magnetostrictive force generated by an EMAT in a ferromagnetic material, the same scheme fails, predicting a null stress.Transforming body force into equivalent surface stresses therefore, requires taking into account higher order terms of the force moments, the zeroth order being the simple force integration over the depth. In this paper, such a transformation is derived up to the second order, assuming that body forces are localized at depths shorter than the ultrasonic wavelength. Two formulations are obtained, each having some advantages depending on the application sought. They apply regardless of the nature of the force considered
dc.language.isoen
dc.publisherAcoustical Society of America
dc.title.enTransformation of body force localized near the surface of a half-space into equivalent surface stresses
dc.typeArticle de revue
dc.identifier.doi10.1121/1.4816489
dc.subject.halSciences de l'ingénieur [physics]
dc.subject.halSciences de l'ingénieur [physics]/Acoustique [physics.class-ph]
bordeaux.journalJournal of the Acoustical Society of America
bordeaux.page2639 - 2646
bordeaux.volume134
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.peerReviewedoui
hal.identifiercea-01780599
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//cea-01780599v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20the%20Acoustical%20Society%20of%20America&rft.date=2013-10&rft.volume=134&rft.spage=2639%20-%202646&rft.epage=2639%20-%202646&rft.eissn=0001-4966&rft.issn=0001-4966&rft.au=ROUGE,%20Cl%C3%A9mence&LH%C3%89MERY,%20Alain&S%C3%89GUR,%20Damien&rft.genre=article


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