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dc.contributor.authorMoldovan, Ionut Dragospor
dc.contributor.authorCorreia, A. Gomespor
dc.contributor.authorPereira, Cláudiopor
dc.description.abstractBender elements are shear wave transducers, used for the experimental identification of the small-strain shear moduli of geomaterials. They offer good coupling with the sample and controllable loading signal and frequency, but the interpretation of their readings poses considerable difficulties. This study lays the foundations for a coupled, numerical-experimental approach to this issue, using hybrid-Trefftz finite elements to model the bender element experiment. Two main reasons justify the choice of these elements. First, they are much less wavelength-sensitive than conventional finite elements, meaning that coarse meshes can be used to model waves of very different types and frequencies. Second, hybrid-Trefftz elements use physically meaningful approximation bases. This enables the numerical filtration of the spurious waves from the response of the sample. The elements recover adequately the output signal obtained experimentally, for multiple laboratorial setups. The numerical filtration of the compression waves endorses the clear identification of the shear wave arrival.por
dc.description.sponsorshipThis research was supported by Fundação para a Ciência e a Tecnologia through project PTDC/ECM/122751/2010 and grant SFRH/BPD/87317/2012, and by the European Union through project FCOMP-01-0124-FEDER-020365por
dc.publisherInternational Society for Soil Mechanics and Geotechnical Engineering (issmge)por
dc.subjectBender element testpor
dc.subjectHybrid-Trefftz finite elementpor
dc.subjectSmall strain shear moduluspor
dc.titleA coupled numerical-experimental approach for bender-based G0 measurements in geomaterialspor
dc.title.alternativeUn couplage numérique-experimentale pour la mesure de G0 avec Bender Elements dans Geomateriauxpor
sdum.event.date17 Set. - 22 Set. 2017por
sdum.event.title19th International Conference on Soil Mechanics and Geotechnical Engineering (19th ICSMGE)por
degois.publication.locationSeoul, Koreapor
dc.subject.fosEngenharia e Tecnologia::Engenharia Civilpor
sdum.conferencePublicationICSMGE 2017 - 19th International Conference on Soil Mechanics and Geotechnical Engineeringpor
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