XFEM Simulation of blast-induced crack propagation in rocks

M. A.L. Bendezu, C. Romanel, D. M. Roehl

Research output: Chapter in Book/Report/Conference proceedingPaper (Conference contribution)

1 Scopus citations

Abstract

Simulation of rock blasting is a challenging task in computational mechanics given the multiphysics and multiscale nature of the phenomenon. Among the several numerical methods available to deal with this problem, the Extended Finite Element Method (XFEM) presents some advantages since it can perform arbitrary crack propagation without remeshing and elements containing a crack are not required to conform to crack edges. In this research XFEM is applied to investigate rock blasting based on the phantom node method where discontinuities in the displacement fields are introduced through new degrees of freedom in overlapping elements. Some specific aspects related to the fracturing of a rock mass subjected to a general bench blast are discussed, such as the influence of mesh refinement, the effects of the stress-loading rate and the number and distribution of preexisting cracks around the blast hole. The numerical results are compared with those obtained by other authors using different numerical approaches, which confirms the suitability of XFEM to simulate dynamic fracture propagation problems.

Original languageEnglish
Title of host publication50th US Rock Mechanics / Geomechanics Symposium 2016
PublisherAmerican Rock Mechanics Association (ARMA)
Pages144-151
Number of pages8
ISBN (Electronic)9781510828025
StatePublished - 1 Jan 2016
Externally publishedYes
Event50th US Rock Mechanics / Geomechanics Symposium 2016 - Houston, United States
Duration: 26 Jun 201629 Jun 2016

Publication series

Name50th US Rock Mechanics / Geomechanics Symposium 2016
Volume1

Conference

Conference50th US Rock Mechanics / Geomechanics Symposium 2016
CountryUnited States
CityHouston
Period26/06/1629/06/16

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    Bendezu, M. A. L., Romanel, C., & Roehl, D. M. (2016). XFEM Simulation of blast-induced crack propagation in rocks. In 50th US Rock Mechanics / Geomechanics Symposium 2016 (pp. 144-151). (50th US Rock Mechanics / Geomechanics Symposium 2016; Vol. 1). American Rock Mechanics Association (ARMA).