Granular Material Point Method : unsaturated soil modelling

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2023-06
Major/Subject
Mcode
Degree programme
Language
en
Pages
13
Series
Geomechanics for Energy and the Environment, Volume 34
Abstract
The paper proposed an enhancement to the Granular Material Point Method extending the original framework for unsaturated granular materials. It discusses briefly the key processes occurring during unsaturated flows and gives a set of assumptions for simplified analysis of such flows with the Granular Material Point Method. Then it proposes an algorithm for the Granular Material Point Method for unsaturated materials and shows how to adjust the original Granular Material Point Method code. Finally, the paper presents two sets of simulations involving unsaturated flows comparing outcomes from the previously proposed Granular Generalized Interpolation Material Point Method (Granular GIMP), original GIMP, as well as two newly proposed Granular GIMP simulations with an enhancement for unsaturated soils. The results show that the proposed formulation leads to improved and qualitatively different results and confirm that considering partial saturation is essential, also when the flow of material is of interest. The paper uniquely illustrates the developments not only with figures but also with videos, giving the whole extent of simulation instead of just a timestamped image.
Description
Funding Information: The work has been partially funded by the Academy of Finland under the project ‘Progressive failure and post-failure modelling of slopes with Generalized Interpolation Material Point Method (GIMP)’, decision number 286628. The authors would also like to acknowledge Aalto University Dean's funding, Finland. Funding Information: The work has been partially funded by the Academy of Finland under the project ‘Progressive failure and post-failure modelling of slopes with Generalized Interpolation Material Point Method (GIMP)’, decision number 286628. The authors would also like to acknowledge Aalto University Dean’s funding, Finland . Publisher Copyright: © 2023 The Author(s)
Keywords
GIMP, Granular flows, Granular Material Point Method, Material point method, Unsaturated soils
Other note
Citation
Sołowski , W T & Seyedan , S 2023 , ' Granular Material Point Method : unsaturated soil modelling ' , Geomechanics for Energy and the Environment , vol. 34 , 100471 . https://doi.org/10.1016/j.gete.2023.100471