eprintid: 2529
rev_number: 6
eprint_status: archive
userid: 6
dir: disk0/00/00/25/29
datestamp: 2015-01-20 14:27:07
lastmod: 2015-01-20 14:27:07
status_changed: 2015-01-20 14:27:07
type: conference_item
metadata_visibility: show
creators_name: Bacigalupo, Andrea
creators_name: Gambarotta, Luigi
creators_id: andrea.bacigalupo@imtlucca.it
creators_id: 
title: Acoustic velocity in layered rock masses with periodic fractures
ispublished: unpub
subjects: TJ
divisions: CSA
full_text_status: none
pres_type: paper
abstract: Fractures and layering in rock masses have a large impact on both the
mechanical and hydraulic properties of the rock mass. When considering seismic elastic
waves, fractures can also trap and guide waves and the behavior of such waves may prove
useful for probing the geometrical and mechanical properties of the fractures. In the longwavelength
limit, when the size of the seismic wavelength is much larger than the layer
and/or fracture spacing, the propagation velocity is obtained by the effective medium theory.
However, when the wavelength becomes smaller, a dispersive behavior is obtained that may
be significantly affected by the layer and fracture spacing.
In the proposed paper a dynamic homogenization technique proposed by the Authors to
analyze dispersive waves in periodic elastic materials (Bacigalupo & Gambarotta, 2012) is
revised and extended to the analysis of dispersive waves in periodically layered fractured
rock masses. The obtained results for some material meso-structures by means of the
proposed approach are compared to those ones by the rigorous Floquet-Bloch theory.
Finally, some examples representative of rock masses are presented and discussed.
date: 2013-08
event_title: COMGEO III, 3rd International Symposium on Computational Geomechanics
event_location: Krakow (Poland)
event_dates: 21– 23 August 2013
event_type: conference
refereed: TRUE
related_url_url: http://ic2e.org/index.php/comgeo/comgeo-iii
related_url_type: org
citation:   Bacigalupo, Andrea and Gambarotta, Luigi  Acoustic velocity in layered rock masses with periodic fractures.  In: COMGEO III, 3rd International Symposium on Computational Geomechanics, 21– 23 August 2013, Krakow (Poland)       (Unpublished)   (2013)