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A constitutive model for sands: Evaluation of predictive capability

Alejo Sfriso
Friday, July 20, 2007
First presented: 
13th Panamerican Conference on Soil Mechanics and Geotechnical Engineering, Venezuela.
Published paper

A constitutive model to describe the mechanical behavior of sands under monotonic loading throughout the stress and strain range of engineering interest is presented. The model uses pressure-dependent elasticity, a three-invariant version of the Murata-Miura yield loci for plastic compression, an enhanced Matsuoka-Nakai criterion for inelastic shear response, and a 3D implementation of Rowe’s stress-dilatancy theory. In order to make the model useful and attractive to geotechnical engineers, its eight parameters were selected among those well known to the geotechnical community. Some numerical simulations are presented to compare the model’s performance against experimental results.

Feature Author

Alejo Oscar Sfriso

Alejo O. Sfriso is a Principal Engineer with 25 years of experience in geotechnical engineering for infrastructure and mining works. He is an expert in the application of numerical methods for geotechnical design and analysis. In addition to his activity at SRK, he is the Director of AOSA - Geotechnical Laboratory, Professor of Soil Mechanics and Geology of the University of Buenos Aires, Vice President for South America of the International Society of Soil Mechanics and Geotechnical Engineering for the period 2017 - 2021, former Professor of Geotechnics at the National University of La Plata and former President of the Argentinean Society of Geotechnical Engineering.

Principal Consultant
PhD, Civil Engineer
SRK Buenos Aires
SRK North America