Matches in SemOpenAlex for { <https://semopenalex.org/work/W2912392877> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W2912392877 abstract "This thesis deals with the study of mechanical wave propagation in dry or wet granular media, with the aim of relating the phenomena at the microscopic scale (particles dynamics, interaction potentials between grains, rheology of the interstitial fluid) to the features at the macroscopic scale (dispersion relation, wave speed and attenuation in the long wavelength approximation). The systems under study are either large one-dimensional granular media, as the analogs of the paths of the most compressed grains (the force chains) in real granular packings, or the real granular media themselves. In a first place, we study experimentally the wave transmission through alignments of dry centimetric spheres, which we model via the Hertz potential. We show that the elasto-frictional coupling between the grains and a substrate (the spheres’ support) induces an on-site elastic potential, which in turn induces a band gap at zero frequency in the transfer function. In a second place, we show that the presence of an infinitesimal amount of viscous fluid at the contact between every particle induces an elasto-hydrodynamic (EHD) interaction. The later affects the attenuation of waves in addition to a significant increase of the wave speed, which in this case both non-trivially depend on the elasticity of the particles, on the viscosity of the fluid and on the frequency. In a third place, we check the reliability of our analysis to describe ultrasonic wave propagation in real granular materials such as dry or wet sand; our particles are here millimetric spheres. In the dry configuration, our results are consistent with an effective medium theory (EMT) which relies on the Hertz-Mindlin interaction in the long wavelength approximation. In the wet configuration, the EMT model combined with an EHD mechanism fairly reproduces our preliminary observations." @default.
- W2912392877 created "2019-02-21" @default.
- W2912392877 creator A5089180347 @default.
- W2912392877 date "2016-09-15" @default.
- W2912392877 modified "2023-09-28" @default.
- W2912392877 title "Waves in granular media : from microscopic scale to macroscopic scale." @default.
- W2912392877 hasPublicationYear "2016" @default.
- W2912392877 type Work @default.
- W2912392877 sameAs 2912392877 @default.
- W2912392877 citedByCount "0" @default.
- W2912392877 crossrefType "dissertation" @default.
- W2912392877 hasAuthorship W2912392877A5089180347 @default.
- W2912392877 hasConcept C120665830 @default.
- W2912392877 hasConcept C121332964 @default.
- W2912392877 hasConcept C121854251 @default.
- W2912392877 hasConcept C127172972 @default.
- W2912392877 hasConcept C1276947 @default.
- W2912392877 hasConcept C159985019 @default.
- W2912392877 hasConcept C177562468 @default.
- W2912392877 hasConcept C184652730 @default.
- W2912392877 hasConcept C192562407 @default.
- W2912392877 hasConcept C200990466 @default.
- W2912392877 hasConcept C32568104 @default.
- W2912392877 hasConcept C57879066 @default.
- W2912392877 hasConcept C62520636 @default.
- W2912392877 hasConcept C6260449 @default.
- W2912392877 hasConcept C66560282 @default.
- W2912392877 hasConcept C72422203 @default.
- W2912392877 hasConcept C79708238 @default.
- W2912392877 hasConceptScore W2912392877C120665830 @default.
- W2912392877 hasConceptScore W2912392877C121332964 @default.
- W2912392877 hasConceptScore W2912392877C121854251 @default.
- W2912392877 hasConceptScore W2912392877C127172972 @default.
- W2912392877 hasConceptScore W2912392877C1276947 @default.
- W2912392877 hasConceptScore W2912392877C159985019 @default.
- W2912392877 hasConceptScore W2912392877C177562468 @default.
- W2912392877 hasConceptScore W2912392877C184652730 @default.
- W2912392877 hasConceptScore W2912392877C192562407 @default.
- W2912392877 hasConceptScore W2912392877C200990466 @default.
- W2912392877 hasConceptScore W2912392877C32568104 @default.
- W2912392877 hasConceptScore W2912392877C57879066 @default.
- W2912392877 hasConceptScore W2912392877C62520636 @default.
- W2912392877 hasConceptScore W2912392877C6260449 @default.
- W2912392877 hasConceptScore W2912392877C66560282 @default.
- W2912392877 hasConceptScore W2912392877C72422203 @default.
- W2912392877 hasConceptScore W2912392877C79708238 @default.
- W2912392877 hasLocation W29123928771 @default.
- W2912392877 hasOpenAccess W2912392877 @default.
- W2912392877 hasPrimaryLocation W29123928771 @default.
- W2912392877 hasRelatedWork W1646097362 @default.
- W2912392877 hasRelatedWork W1993697740 @default.
- W2912392877 hasRelatedWork W2016303871 @default.
- W2912392877 hasRelatedWork W2028561608 @default.
- W2912392877 hasRelatedWork W2053274249 @default.
- W2912392877 hasRelatedWork W2054065338 @default.
- W2912392877 hasRelatedWork W2055350577 @default.
- W2912392877 hasRelatedWork W2056942476 @default.
- W2912392877 hasRelatedWork W2066249972 @default.
- W2912392877 hasRelatedWork W2074111942 @default.
- W2912392877 hasRelatedWork W2085042514 @default.
- W2912392877 hasRelatedWork W2088854673 @default.
- W2912392877 hasRelatedWork W2095481343 @default.
- W2912392877 hasRelatedWork W2115665955 @default.
- W2912392877 hasRelatedWork W2152951850 @default.
- W2912392877 hasRelatedWork W2386325900 @default.
- W2912392877 hasRelatedWork W2786092251 @default.
- W2912392877 hasRelatedWork W2898407547 @default.
- W2912392877 hasRelatedWork W2954576194 @default.
- W2912392877 hasRelatedWork W3099598501 @default.
- W2912392877 isParatext "false" @default.
- W2912392877 isRetracted "false" @default.
- W2912392877 magId "2912392877" @default.
- W2912392877 workType "dissertation" @default.