TITLE:
Use of the Cam-Clay Model in Finite Element Calculations after Identification of Soils from Simple Mechanical Tests
AUTHORS:
Cheikhou Ndiaye, Yves Berthaud, Raphael Catusse
KEYWORDS:
Modelling, Comportment, Elasto-Plasticity, Load Surface, Constraints, Volumetric, Deviatoric, Simulation, Optum, Cast3M, Criteria, Tropical, Lateritic, Soils
JOURNAL NAME:
Geomaterials,
Vol.11 No.3,
July
30,
2021
ABSTRACT: In order to make the use of complex elasto-plastic behavior models more accessible, we attempted to identify the Cam-Clay model in two samples of tropical and lateritic soils (from Senegal/West Africa) from casagrande box shear and oedometric tests. This methodology was used as a substitute for triaxial trials. In this article, we first verify the test results by the finite element method with the Optum software. We use a simulation of the tests with the modified Cam Clay model as the behavior model. Then, we simulate the oedometric test on tropical soils with the Castem software and also use the modified Cam Clay model. These calculations make it possible to write the criterion of plasticity of the material starting from the expression of the surface of load while passing by the calculation of the volumetric and deviatoric stresses.