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 language | English |
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Title of host publication | Proceedings of the 20th International Conference on Soil Mechanics and Geotechnical Engineering, Sydney 2021 |
Place of Publication | Sydney |
Publisher | Australian Geomechanics Society |
Pages | 667-672 |
Number of pages | 6 |
ISBN (Electronic) | 9780994626141 |
Publication status | Published - May 2022 |
Event | 20th International Conference on Soil Mechanics and Geotechnical Engineering 2022 - International Convention Centre, Sydney, Australia Duration: 1 May 2022 → 5 May 2022 https://icsmge2022.org/ |
Conference
Conference | 20th International Conference on Soil Mechanics and Geotechnical Engineering 2022 |
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Abbreviated title | ISSMGE |
Country/Territory | Australia |
City | Sydney |
Period | 1/05/22 → 5/05/22 |
Internet address |
Keywords
- Discrete Element Method
- Cyclic loading
- Flexible protection structure
- double-twisted mesh
- Plasticization
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Dive into the research topics of 'Discrete Element simulation of the response of a double-twisted mesh subject to cyclic loads'. Together they form a unique fingerprint.Student theses
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Experimental and numerical characterization of Double-Twisted hexagonal meshes for rockfall protection
Previtali, M. (Author), Ciantia, M. (Supervisor), Spadea, S. (Supervisor), Crosta, G. B. (Supervisor) & Castellanza, R. P. (Supervisor), 2023Student thesis: Doctoral Thesis › Doctor of Philosophy
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