A flexible and robust yield function for geomaterials

Golchin, A.; Vardon, P.J.; Hicks, M.A.; Coombs, W.M.

doi:10.1016/j.cma.2021.114162

A flexible and robust yield function for geomaterials

Golchin, A.; Vardon, P.J.; Hicks, M.A.; Coombs, W.M.

Authors

A. Golchin

P.J. Vardon

M.A. Hicks

Professor William Coombs w.m.coombs@durham.ac.uk
Professor

Abstract

This paper presents a new Modified Cam Clay (MCC) type yield function, that is designed for robust and efficient use with implicit stress integration algorithms. The proposed yield function attains non-elliptical (e.g. tear and bullet) shapes, as well as the typical elliptical shape of the MCC model. Like that of MCC, and unlike most other yield functions with non-elliptical shapes available in literature, it is non-singular and unique throughout stress space. The experimental yielding stresses of a wide range of geomaterials have been accurately simulated using the yield surface. The yield function can be used in constitutive models based on classical elasto-plasticity theory.

Citation

Golchin, A., Vardon, P., Hicks, M., & Coombs, W. (2021). A flexible and robust yield function for geomaterials. Computer Methods in Applied Mechanics and Engineering, 387, Article 114162. https://doi.org/10.1016/j.cma.2021.114162

Journal Article Type	Article
Acceptance Date	Aug 29, 2021
Online Publication Date	Oct 21, 2021
Publication Date	Dec 15, 2021
Deposit Date	Aug 31, 2021
Publicly Available Date	Oct 21, 2021
Journal	Computer Methods in Applied Mechanics and Engineering
Print ISSN	0045-7825
Publisher	Elsevier
Peer Reviewed	Peer Reviewed
Volume	387
Article Number	114162
DOI	https://doi.org/10.1016/j.cma.2021.114162

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http://creativecommons.org/licenses/by/4.0/

Copyright Statement
© 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).