An image point identification rule for 3D bounding surface plasticity models

H. Moghaddasi, Nasser Khalili, B. Shahbodagh*, G. A. Esgandani, A. Khoshghalb

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

Abstract

Identification of the correct locations of the current stress and stress reversal points in the 3D stress space is crucial for the successful application of a 3D bounding surface model under complex multiaxial loading conditions. Any miscalculation of the locations of these points can markedly alter the location of the image point on the bounding surface, and consequently affect the model predictions. The main objective of this paper is to present a generalised mapping rule for the identification of image point in 3D bounding surface plasticity models. The mapping rule is based on determination of the exact locations of the stress points in the principal stress space using the eigenvectors of the stress tensors. The mapping rule is implemented in a 3D bounding surface plasticity model to capture the behaviour of soils under multiaxial loading conditions. The simulation results are presented and compared with existing experimental data to validate the proposed model.

Original languageEnglish
Title of host publicationChallenges and innovations in geomechanics
Subtitle of host publicationproceedings of the 16th International Conference of IACMAG
EditorsMarco Barla, Alice Di Donna, Donatella Sterpi
Place of PublicationCham
PublisherSpringer, Springer Nature
Pages507-513
Number of pages7
Volume1
ISBN (Electronic)9783030645144
ISBN (Print)9783030645137, 9783030645168
DOIs
Publication statusPublished - 2021
Externally publishedYes
Event16th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2021 - Turin, Italy
Duration: 5 May 20218 May 2021

Publication series

NameLecture Notes in Civil Engineering
PublisherSpringer
Volume125
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

Conference16th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2021
CountryItaly
CityTurin
Period5/05/218/05/21

Keywords

  • 3D bounding surface plasticity
  • Eigenvalue analysis
  • Generalised mapping rule

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