Simulation of multistage excavation based on a 3D spectral-element method

Hom Nath Gharti, Volker Oye, Dimitri Komatitsch, Jeroen Tromp

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

We implement a 3D spectral-element method for multistage excavation problems. To simulate excavation in elastoplastic soils, we employ a Mohr-Coulomb yield criterion using an initial strain method. We parallelize the software based on non-overlapping domain decomposition using MPI. We verify the uniqueness principle for multistage excavation in linear elastic materials. We validate our serial and parallel programs, and illustrate several examples of multistage excavation in elastoplastic materials. Finally, we apply our software to a model of the Pyhäsalmi ore mine in Finland. Strong-scaling performance tests involving multistage excavation show that the parallel program performs reasonably well for large-scale problems.

Original languageEnglish (US)
Pages (from-to)54-69
Number of pages16
JournalComputers and Structures
Volume100-101
DOIs
StatePublished - Jun 1 2012

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Modeling and Simulation
  • Materials Science(all)
  • Mechanical Engineering
  • Computer Science Applications

Keywords

  • Elastoplasticity
  • Mining
  • Multistage excavation
  • Parallel processing
  • Spectral-element method

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