Friday, April 18, 2014

 

 



Soy un nuevo usuario

Olvidé mi contraseña

Entrada usuarios

Lógica Matemáticas Astronomía y Astrofísica Física Química Ciencias de la Vida
Ciencias de la Tierra y Espacio Ciencias Agrarias Ciencias Médicas Ciencias Tecnológicas Antropología Demografía
Ciencias Económicas Geografía Historia Ciencias Jurídicas y Derecho Lingüística Pedagogía
Ciencia Política Psicología Artes y Letras Sociología Ética Filosofía


Amplitude-dependent attenuation of compressive waves in curved granular crystals constrained by elastic guides

1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario
    registrado en Universia

Detalles del recurso

Pertenece a: Caltech Authors  

Descripción: We study the wave propagation in a curved chain of spherical particles constrained by elastic guides under the axial impact of a falling mass. We characterize the force transmission properties of the chain by varying the striker’s mass and the chain’s curvature. Experimental tests demonstrate amplitude-dependent attenuation of compressive waves propagating through the curved chain. In particular, we observe that the curved systems present an improved transmission of small dynamic disturbances relative to that of strong excitations, resulting from the close interplay between the granular particles and the softer elastic medium. We also find that the transmission of the compressive waves through the chains is dependent on the initial curvature imposed to the system. Numerical simulations, based on an approach that combines discrete element and finite element methods, corroborate the experimental results. The findings suggest that hybrid structures composed of granular particles and linear elastic media can be employed as new passive acoustic filtering materials that selectively transmit or mitigate excitations in a desired range of pressure amplitudes.

Autor(es): Yang, Jinkyu -  Dunatunga, Sachith -  Daraio, Chiara - 

Id.: 55231049

Versión: 1.0

Estado: Final

Tipo de recurso: Article  -  PeerReviewed  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

Requerimientos técnicos:  Browser: Any - 

Relación: [References] http://resolver.caltech.edu/CaltechAUTHORS:20120430-110648937
[References] http://authors.library.caltech.edu/30401/

Fecha de contribución: 01-may-2012

Contacto:

Localización:
* Yang, Jinkyu and Dunatunga, Sachith and Daraio, Chiara (2012) Amplitude-dependent attenuation of compressive waves in curved granular crystals constrained by elastic guides. Acta Mechanica, 223 (3). pp. 549-562. ISSN 0001-5970 http://resolver.caltech.edu/CaltechAUTHORS:20120430-110648937


Otros recursos del mismo autor(es)

  1. Strain-rate-dependent model for the dynamic compression of elastoplastic spheres We present a force-displacement contact model for the compressive loading of elastoplastic spheres. ...
  2. Thin Films with Ultra-low Thermal Expansion Ultra-low coefficient of thermal expansion (CTE) is an elusive property, and narrow temperature rang...
  3. Experimental realization of a nonlinear acoustic lens with a tunable focus We realize a nonlinear acoustic lens composed of a two-dimensional array of sphere chains interfaced...
  4. Effect of morphology on the strain recovery of vertically aligned carbon nanotube arrays: An in situ study We report on the distinctly different mechanical responses of two vertically aligned carbon nanotube...
  5. Frequency bands of strongly nonlinear homogeneous granular systems Recent numerical studies on an infinite number of identical spherical beads in Hertzian contact show...

Otros recursos de la misma colección

  1. Homogeneous vs heterogeneous subduction zone models: Coseismic and postseismic deformation A finite-element model (FEM) incorporating geologic properties characteristic of a subduction zone i...
  2. Slip kinematics and dynamics during and after the 1995 October 9 M_w=8.0 Colima–Jalisco earthquake, Mexico, from GPS geodetic constraints We use horizontal and vertical crustal displacements derived from GPS measurements at 26 sites in we...
  3. Lead concentrations in the northeast Pacific: evidence for global anthropogenic perturbations Lead concentrations were determined by isotope dilution mass spectrometry in 34 surface- and deep-wa...
  4. Winter Frost at Viking Lander 2 Site A key question in the study of Mars is water exchange between atmosphere and surface on daily, seaso...
  5. Postseismic Rebound in Fault Step-Overs Caused by Pore Fluid Flow Near-field strain induced by large crustal earthquakes results in changes in pore fluid pressure tha...

Valoración de los usuarios

No hay ninguna valoración para este recurso.Sea el primero en valorar este recurso.
 

Busque un recurso