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.
Original language | English |
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Article number | 114162 |
Number of pages | 37 |
Journal | Computer Methods in Applied Mechanics and Engineering |
Volume | 387 |
DOIs | |
Publication status | Published - 2021 |
Keywords
- Flexible
- Implicit stress integration
- Non-singular
- Robust
- Uniqueness
- Yield surface