Xie, Mian;
Navas, Pedro;
Lopez-Querol, Susana;
(2024)
Numerical Simulation of Landslides through a Stabilised Material Point Method with SANISAND Model.
In: Viggiani, Giulia and Madabhushi, Gopal, (eds.)
17th BGA Young Geotechnical Engineers Symposium.
(pp. pp. 117-118).
University of Cambridge
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Abstract
This research presents a new semi-implicit two-phase double-point MPM formulation for modelling large-deformation geotechnical problems such as landslides. The proposed method addresses instabilities in traditional single-point MPM by using distinct sets of material points to model the soil and water phases separately (double-point approach). A modified F-bar technique is derived to stabilise advanced soil constitutive models such as SANISAND, allowing for a more realistic simulation of soil behaviour. The water phase is solved implicitly, enabling significantly longer time steps compared to fully explicit MPM approaches. Landslide examples using the SANISAND constitutive model are presented in this paper, demonstrating the performance of the modified F-bar method and highlighting the importance of the double-point approach.
| Type: | Proceedings paper |
|---|---|
| Title: | Numerical Simulation of Landslides through a Stabilised Material Point Method with SANISAND Model |
| Event: | 17th BGA Young Geotechnical Engineers Symposium |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.17863/CAM.111018 |
| Publisher version: | https://doi.org/10.17863/CAM.111018 |
| Language: | English |
| Additional information: | https://creativecommons.org/licenses/by/4.0/ |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS 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/10200017 |
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