Novel SPH SIMSAND-based approach for modeling of granular collapse

Zhen Yu Yin, Zhuang Jin, Panagiotis Kotronis, Ze Xiang Wu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

34 Citations (Scopus)


Granular collapse is a common issue in natural hazards. This paper proposes a novel numerical approach on modeling granular column collapse. A newly developed critical state-based constitutive model, SIMSAND, was adopted to combine with the smoothed particle hydrodynamics (SPH) method for realistically reproducing large deformation during collapse. A rectangular channel and two-dimensional column tests were first simulated for the validation. The effects of aspect ratio and initial soil density were further investigated by additional simulations. It was demonstrated that the novel SPH-SIMSAND approach is helpful in improving the understanding of granular collapse and should be an effective computational tool for the analysis of real-scale granular flow.

Original languageEnglish
Article number04018156
JournalInternational Journal of Geomechanics
Issue number11
Publication statusPublished - 1 Nov 2018


  • Collapse
  • Critical state
  • Granular flow
  • Granular material
  • Large-deformation analysis
  • Smoothed particle hydrodynamics (SPH)

ASJC Scopus subject areas

  • Soil Science


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