دورية أكاديمية
Low-Frequency Behavior of Beads Constrained on a Lattice
| العنوان: | Low-Frequency Behavior of Beads Constrained on a Lattice |
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| المؤلفون: | Gilles, Bruno, Coste, C. |
| المساهمون: | Laboratoire de Physique de l'ENS Lyon (Phys-ENS), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Groupe de Physique des Solides (GPS), Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | ISSN: 0031-9007. |
| بيانات النشر: | HAL CCSD American Physical Society |
| سنة النشر: | 2003 |
| المجموعة: | HAL Lyon 1 (University Claude Bernard Lyon 1) |
| مصطلحات موضوعية: | granular materials, acoustic wave propagation, stress effects, acoustic wave velocity, PACS: 45.70.-n, 43.20.+g, 46.65.+g |
| الوصف: | We study sound propagation in a triangular lattice of spherical beads under isotropic stress. Polydispersity of real beads breaks some contacts, creating a disordered lattice of contacting beads. At large stress, the sound velocity behaves according to Hertz contact law and departs from it at lower stress. This evolution is reversible, with the same crossover when increasing or decreasing the stress, for a given piling. Correlations are much more sensitive to disorder. When calculated with signals propagated in the same lattice, they evolve reversibly with the stress, being much higher at large stress when the contact lattice is more regular. This leads to an interpretation of the non-Hertzian behavior in terms of progressive activation of contacts, in discrepancy with previous models involving buckling of force chains. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | hal-00017357; https://hal.science/hal-00017357Test |
| DOI: | 10.1103/PhysRevLett.90.174302 |
| الإتاحة: | https://doi.org/10.1103/PhysRevLett.90.174302Test https://hal.science/hal-00017357Test |
| رقم الانضمام: | edsbas.BD893FF4 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1103/PhysRevLett.90.174302 |
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