Abstract
The material point method (MPM) shows promise for the simulation of large deformations in history-dependent materials such as soils. However, in general, it suffers from oscillations and inaccuracies due to its use of numerical integration and stress recovery at non-ideal locations. The development of a hydro-mechanical model, which does not suffer from oscillations is presented, including a number of benchmarks which prove its accuracy, robustness and numerical convergence. In this study, particular attention has been paid to the formulation of two-phase coupled material point method and the mitigation of volumetric locking caused numerical instability when using low-order finite elements for (nearly) incompressible problems. The numerical results show that the generalized interpolation material point (GIMP) method with selective reduced integration (SRI), patch recovery and composite material point method (CMPM) (named as GC-SRI-patch) is able to capture key processes such as pore pressure build-up and consolidation.
Original language | English |
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Title of host publication | Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 1 |
Editors | Marco Barla, Alice Di Donna, Donatella Sterpi |
Place of Publication | Cham |
Publisher | Springer |
Pages | 819-826 |
Number of pages | 8 |
ISBN (Electronic) | 978-3-030-64514-4 |
ISBN (Print) | 9783030645137 |
DOIs | |
Publication status | Published - 2021 |
Event | 16th International Conference of IACMAG (postponed): International Association for Computer Methods and Advances in Geomechanics - Torino, Italy Duration: 5 May 2021 → 8 May 2021 http://www.iacmag2020.org |
Publication series
Name | Lecture Notes in Civil Engineering |
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Volume | 125 |
ISSN (Print) | 2366-2557 |
ISSN (Electronic) | 2366-2565 |
Conference
Conference | 16th International Conference of IACMAG (postponed) |
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Abbreviated title | IACMAG 2021 |
Country/Territory | Italy |
City | Torino |
Period | 5/05/21 → 8/05/21 |
Internet address |
Keywords
- Consolidation
- Coupled behavior
- Hydro-mechanical
- Large deformation
- Material point method
- Reduced integration