Multiscale modelling of dynamic impact on highly deformable compound rockfall fence nets

Marco Previtali (Lead / Corresponding author), Matteo Oryem Ciantia, Saverio Spadea, Riccardo Pietro Castellanza, Giovani Battista Crosta

Research output: Contribution to journalArticlepeer-review

Abstract

Herein a discrete element model of a full-scale compound mesh barrier, formed by interweaved double-twist hexagonal meshes and strand rope square meshes is presented. A plastic hardening model is employed to investigate the energy dissipation terms within the barrier. The computational effort required for model initialization is reduced through a novel generation procedure. The effect of different impact positions on the energy dissipation within the barrier and the way the impact load is transmitted to the main structural elements of the barrier are investigated through a sensitivity analysis. The results show that the impact position has both qualitative and quantitative effects on the barrier response, which significantly modify the peak load acting on the structural elements and the combination of shear, tensile and moment loading on the fence posts.
Original languageEnglish
JournalProceedings of the Institution of Civil Engineers: Geotechnical Engineering
Early online date31 Aug 2021
DOIs
Publication statusE-pub ahead of print - 31 Aug 2021

Keywords

  • geohazard mitigation
  • discreet-element modelling
  • dynamic analysis

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