| Issue |
E3S Web Conf.
Volume 9, 2016
3rd European Conference on Unsaturated Soils – “E-UNSAT 2016”
|
|
|---|---|---|
| Article Number | 17005 | |
| Number of page(s) | 6 | |
| Section | Constitutive Modelling | |
| DOI | https://doi.org/10.1051/e3sconf/20160917005 | |
| Published online | 12 September 2016 | |
Plasto-damage modelling for semi-brittle geomaterials
1 Civil Engineering Department, University of Tehran, Tehran, Iran
2 ParisTech, Laboratoire Navier (École des Ponts) École des Ponts ParisTech (ENPC)
a Corresponding author: behrouz.gatmiri@andra.fr
This paper presents an elastoplastic damage model for constitutive modelling of semi-brittle geomaterials showing two irreversible mechanisms. On one hand, the model deals with the plastic behaviour of a porous medium by a new variant of Barcelona Basic Model. On the other hand, the model combines the micromechanical definition of damage and phenomenological concepts in the framework of Continuum Damage Mechanics (CDM) for damage modelling. A second order tensorial damage variable is adopted for the model. Damaged effective stress variables are employed for formulation of elastoplastic behaviour laws and the plastic yield surface is a damage dependent one. The model has been validated by comparing the numerical results with experimental results of argillites.
© The Authors, published by EDP Sciences, 2016
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