TY - GEN
T1 - Numerical simulation of acoustic emission in rocks using FEM/DEM
AU - Grasselli, G.
AU - Zhao, Q.
AU - Lisjak, A.
AU - Liu, Q.
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - Acoustic Emissions (AE) are stress waves released by localized inelastic deformation events during the progressive failure of brittle rocks. Although several numerical methods have been developed to simulate the deformation and damage processes of rocks, only a limited number have been capable of providing quantitative information regarding the associated acoustic activity. FEM/DEM is a numerical tool that simulates material failure by explicitly modelling fracture nucleation and propagation using cohesive elements. Seismic information is extracted with a newly developed algorithm based on the monitoring of internal variables in the proximity of propagating cracks. Several simulation cases were analyzed, including a point source model, a wing crack propagation model, and a circular excavation model. Simulated AE were cross-analyzed by travel-time inversion, spectral analysis, and frequency-magnitude statistics. These preliminary results demonstrate the capabilities of FEM/DEM as a tool to numerically simulate seismicity associated to the rock failure process.
AB - Acoustic Emissions (AE) are stress waves released by localized inelastic deformation events during the progressive failure of brittle rocks. Although several numerical methods have been developed to simulate the deformation and damage processes of rocks, only a limited number have been capable of providing quantitative information regarding the associated acoustic activity. FEM/DEM is a numerical tool that simulates material failure by explicitly modelling fracture nucleation and propagation using cohesive elements. Seismic information is extracted with a newly developed algorithm based on the monitoring of internal variables in the proximity of propagating cracks. Several simulation cases were analyzed, including a point source model, a wing crack propagation model, and a circular excavation model. Simulated AE were cross-analyzed by travel-time inversion, spectral analysis, and frequency-magnitude statistics. These preliminary results demonstrate the capabilities of FEM/DEM as a tool to numerically simulate seismicity associated to the rock failure process.
UR - http://www.scopus.com/inward/record.url?scp=84878586252&partnerID=8YFLogxK
M3 - Conference article published in proceeding or book
AN - SCOPUS:84878586252
SN - 9781138000568
T3 - Rock Dynamics and Applications - State of the Art: Proceedings of the 1st International Conference on Rock Dynamics and Applications, RocDyn-1 2013
SP - 149
EP - 159
BT - Rock Dynamics and Applications - State of the Art
T2 - 1st International Conference on Rock Dynamics and Applications, RocDyn-1 2013
Y2 - 6 June 2013 through 8 June 2013
ER -