Discrete Element simulation of the response of a double-twisted mesh subject to cyclic loads

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Flexible protection barriers are the most widespread passive mitigation system against natural hazards such as rockfall. These structures dissipate the kinetic energy of the rock block through inertial deformation. When subject to significant loads, the steel wires composing the structure undergo plastic hardening and non-reversible deformation. While this phenomenon is well known, and the literature contains studies of the mesh plasticization phenomenon, the non-reversibility of this process is not considered for the successive impact events. Herein a Discrete Element model is employed to investigate the cyclic response of a double-twisted hexagonal wire mesh during a quasi-static punch test. The results show that repeated low entity loads, 12% of the peak force, only cause negligible plasticization within the mesh; medium loads, 60% of the peak force, can induce sagging and changes in the post-peak response, without significantly affecting the peak load. Finally, high loads, 80% of the peak force, quickly induce failure within the mesh.
Original languageEnglish
Title of host publicationProceedings of the 20th International Conference on Soil Mechanics and Geotechnical Engineering, Sydney 2021
Place of PublicationSydney
PublisherAustralian Geomechanics Society
Pages667-672
Number of pages6
ISBN (Electronic)9780994626141
Publication statusPublished - May 2022
Event20th International Conference on Soil Mechanics and Geotechnical Engineering 2022 - International Convention Centre, Sydney, Australia
Duration: 1 May 20225 May 2022
https://icsmge2022.org/

Conference

Conference20th International Conference on Soil Mechanics and Geotechnical Engineering 2022
Abbreviated titleISSMGE
Country/TerritoryAustralia
CitySydney
Period1/05/225/05/22
Internet address

Keywords

  • Discrete Element Method
  • Cyclic loading
  • Flexible protection structure
  • double-twisted mesh
  • Plasticization

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