Numerical simulation of a single shear scenario in fibreglass rock bolts
Paper
| Paper/Presentation Title | Numerical simulation of a single shear scenario in fibreglass rock bolts |
|---|---|
| Presentation Type | Paper |
| Authors | Jodeiri Shokri, Behshad, Entezam, Shima, Gregor, Peter, Nourizadeh, Hadi, Entezam, Alireza, Mirzaghorbanali, Ali, McDougall, Kevin, Karunasena, Karu and Aziz, Naj |
| Editors | Aziz, Naj, Mirzaghorbanali, Ali, Hoelle, John, Shan, Zhenjun, Marston, Kevin, Nemcik, Jan, Campbell, Richard and Mottahedi, Adel |
| Journal or Proceedings Title | Proceedings of the 2025 Resource Operator Conference (ROC2025) |
| Journal Citation | pp. 285-300 |
| Number of Pages | 16 |
| Year | 2025 |
| Place of Publication | Australia |
| ISBN | 9781741284096 |
| 9781741284102 | |
| Web Address (URL) of Conference Proceedings | https://ro.uow.edu.au/articles/book/Proceedings_of_the_2025_Resource_Operators_Conference/28935122/1?file=54235436 |
| Conference/Event | 2025 Resource Operator Conference (ROC2025) |
| Event Details | 2025 Resource Operator Conference (ROC2025) Delivery In person Event Date 06 to end of 07 Feb 2025 Event Location University of Southern Queensland Event Venue Brisbane, Australia |
| Abstract | This study describes developing and validating a numerical model for a single shear test on 20-tonne fibreglass rock bolts using FLAC3D. For this, some pure single-shearing tests were conducted using a metal guillotine single-shearing apparatus. Following this, a conceptual model, including two rectangular blocks with a width and depth of 100 mm and a height of 200 mm, was created to assess the performance of a single-shear fibreglass rock bolt. The conceptual model was then uploaded to FLAC3D. The numerical model incorporates critical parameters such as block dimensions, grid numbers and node spacing to ensure simulation accuracy. The FLAC3D model closely matched the experimental test results in predicting the bolt's properties, including the elastic transition trough, peak shear force, peak displacement and post-failure response. However, the model failed to predict shear forces at lower displacements. This discrepancy may be due to assuming a near-perfect scenario with minimal system imperfections, leading to higher shear forces at lower displacements due to the absence of imperfections to dampen the shear force transfer. As expected, with the increase in shear forces, the model aligned well with data from the experimental tests. |
| Keywords | Fibre glass rock bolt; FLAC; numerical simulations; single shear test |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 401902. Geomechanics and resources geotechnical engineering |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Byline Affiliations | School of Engineering |
| Centre for Future Materials | |
| Sales and Student Recruitment | |
| School of Surveying and Built Environment | |
| University of Wollongong |
https://research.usq.edu.au/item/zx6v4/numerical-simulation-of-a-single-shear-scenario-in-fibreglass-rock-bolts
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