On the Numerical Implementation of a Thermomechanical Hyperplasticity Model for Fine-Grained Soils

A. Golchin*, Philip J. Vardon, Michael A. Hicks, William M. Coombs, I. A. Pantev

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

The numerical implementation of a recently developed thermomechanical constitutive model for fine-grained soils based on hyperelasticity-hyperplasticity theory (Golchin et al. 2020), is presented. A new unconventional implicit stress return mapping algorithm, compatible with elasticity derived from Gibbs (complementary) energy potential, in strain invariant space, is designed and the consistent tangent operator for use in boundary value problems (such as in the finite element method) is derived. It is shown that the rate of convergence of the stress integration algorithm is quadratic. The numerical results are in good agreement with available data from thermomechanical element tests found in literature.

Original languageEnglish
Title of host publicationChallenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 1
EditorsMarco Barla, Alice Di Donna, Donatella Sterpi
Place of PublicationCham
PublisherSpringer
Pages422-429
Number of pages8
ISBN (Electronic)9783030645144
ISBN (Print)9783030645137
DOIs
Publication statusPublished - 2021
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
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
Country/TerritoryItaly
CityTurin
Period5/05/218/05/21

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • Gibbs free energy
  • Hyperplasticity
  • Implicit integration
  • Thermomechanical model

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