A flexible and robust yield function for geomaterials

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

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
• Electronic ISSN: 1879-2138
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 387
• Article Number: 114162
• DOI: https://doi.org/10.1016/j.cma.2021.114162
• Public URL: https://durham-repository.worktribe.com/output/1265879