Please use this identifier to cite or link to this item: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1006522
Title: Vibration propagation in discrete element particle models of rock
Authors: Resende, R.
Fortunato, E.
Andrade, C.
Miranda, T.
Issue Date: May-2014
Publisher: CRC Press
Abstract: Vibrations in rockmasses can be a significant hazard, leading to human discomfort and structural damage. Recent cases of subway or tunnel excavation near existing dams in Portugal have raised again the importance of this topic. Traditional statistical tools have been used to study wave propagation in rock, but fall short when rock fracturing or faulting radically changes the way vibration propagates. Numerical models such as finite-element or finite-difference models also have some insufficiencies, namely in the way discontinuities are represented.We propose the utilization of bonded particlemodels based on the ParticleDiscrete ElementMethod. Synthetic rock samples are generated and their static elastic properties are calibrated by manipulating micro- properties (assembly organization and normal and shear contact stiffness). The static and dynamic properties of the rock cores are tested and the complete elastic response of the model is evaluated and discussed.
URI: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1006522
Appears in Collections:DT/NIT - Comunicações a congressos e artigos de revista

Files in This Item:
File Description SizeFormat 
20140527-EUROCK2014.pdf61.25 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.