A flexible and robust yield function for geomaterials

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

doi:10.1016/j.cma.2021.114162

A flexible and robust yield function for geomaterials

Title

A flexible and robust yield function for geomaterials

Author

Golchin, A. (TU Delft Geo-engineering)
Vardon, P.J. (TU Delft Geo-engineering)
Coombs, William M. (Durham University)
Hicks, M.A. (TU Delft Geo-engineering)

Date

2021

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.

Subject

Flexible
Implicit stress integration
Non-singular
Robust
Uniqueness
Yield surface

To reference this document use:

http://resolver.tudelft.nl/uuid:e80b340c-4e48-4746-abdf-6e792966fa81

DOI

https://doi.org/10.1016/j.cma.2021.114162

ISSN

0045-7825

Source

Computer Methods in Applied Mechanics and Engineering, 387

Part of collection

Institutional Repository