A Nonlocal Elasto-Plastic Model for Structured Soils at Large Strains for the Particle Finite Element Method

Lluís Monforte, Matteo Ciantia, Josep Maria Carbonell, Marcos Arroyo, Antonio Gens

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This work presents a robust and mesh-independent implementation of an elasto-plastic constitutive model at large strains, appropriate for structured soils, into a Particle Finite Element code specially developed for geotechnical simulations. The constitutive response of structured soils is characterized by softening and, thus, leading to strain localization. Strain localization poses two numerical challenges: mesh dependence of the solution and computability of the solution. The former is mitigated by employing a non-local integral type regularization whereas an Implicit-Explicit integration scheme is used to enhance the computability. The good performance of these techniques is highlighted in the simulation of the cone penetration test in undrained conditions.
Original languageEnglish
Title of host publicationChallenges and Innovations in Geomechanics
Subtitle of host publicationProceedings of the 16th International Conference of IACMAG - Volume 2
EditorsMarco Barla, Alice Di Donna, Donatella Sterpi
Place of PublicationSwitzerland
PublisherSpringer
Pages544-551
Number of pages8
Volume2
ISBN (Electronic)9783030645182
ISBN (Print)9783030645175
DOIs
Publication statusPublished - 2021

Publication series

NameLecture Notes in Civil Engineering
Volume126
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Keywords

  • PFEM
  • Structured soils
  • Nonlocal elasto-plasticity
  • Constitutive modeling

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