Kontoe, Maria;
Lopez-Querol, Maria Susana;
Rossetto, Tiziana;
(2023)
Simulating dry granular flow impacts on 3D rigid obstacles.
In:
Proceedings of the 10th European Conference on Numerical Methods in Geotechnical Engineering:NUMGE 2023.
European Regional Technical Committee 7 for Numerical Methods: London, UK.
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Abstract
The scope of this study is to identify the loads acting on a 3D structure impacted by a dry granular flow using numerical modelling. The developed models deploy the Material Point Method (MPM) owing to its capability in capturing largestrain deformation problems. Initially, a 2D model of an experiment from the literature is developed. The experiment refers to a small-scale flume test which monitors the impact of a dry granular flow on a rigid obstacle with different inclinations of the flume. The developed numerical model accurately replicates a previously validated simulation, regarding the impact process and obtained measurements and therefore, captures efficiently the experimental response. The 2D numerical model is then extended to a 3D computational domain, indicating sensitivity of the impact force records upon the assigned number of material points representing the granular flow. The calibrated 3D model is modified to consider reduced obstacle width, to capture the variability of induced soil pressure on the structures and simulate the soil flow when surrounding them. The implemented modifications indicate a degrading post-peak branch linked to the decreasing sediment at the front face of the structure.
| Type: | Proceedings paper |
|---|---|
| Title: | Simulating dry granular flow impacts on 3D rigid obstacles |
| Event: | 10th European Conference on Numerical Methods in Geotechnical Engineering |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://www.imperial.ac.uk/numerical-methods-in-ge... |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | MPM; Dry granular flow; Impact force; Reduced width obstacle; Flume experiment |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10171782 |
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