A nonlocal material point method for the simulation of large deformation problems in brittle soils

Journal article (2024)

Authors

J.L. Gonzalez Acosta Geo-engineering - CEG
Miguel A. Mánica Universidad Nacional Autónoma de México
P.J. Vardon Geo-engineering - CEG
M.A. Hicks Geo-engineering - CEG
Antonio Gens Universitat Politecnica de Catalunya
Research Group
Geo-engineering (CEG) (TU Delft)
Material point method Stress oscillations Brittle soil Mesh dependency Nonlocal regularisation
More Info
expand_more

Published Date

2024

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Civil Engineering & Geosciences

Department

Geoscience and Engineering

Research Group

Geo-engineering

Abstract

This paper investigates the implementation of a nonlocal regularisation of the material point method to mitigate mesh-dependency issues for the simulation of large deformation problems in brittle soils. The adopted constitutive description corresponds to a simple elastoplastic model with nonlinear strain softening. A number of benchmark simulations, assuming static and dynamic conditions, were performed to show the importance of regularisation, as well as to assess the performance and robustness of the implemented nonlocal approach. The relevance of addressing stress oscillation issues, due to material points crossing element boundaries, is also demonstrated. The obtained results provide relevant insights into brittle materials undergoing large deformations within the MPM framework.