Chapter
Aug 11, 2016
A Methodology to Determine the Viscoplastic Perzyna Model Parameters for Granular Materials under High Strain Rates
Authors: M. Jafari, P. Kanopoulos, K. Xia, and M. GrabinskyAuthor Affiliations
Publication: Geo-Chicago 2016
Abstract
Although Perzyna’s theory of viscoplasticity has been accepted and used widely, there is no proper and unified method to determine this model’s parameters for granular materials such as sand under high strain rate conditions. To study these parameters, both static and dynamic tests have been conducted on Ottawa sand. The method used to determine the physical behavior of sand at high strain rates was the split Hopkinson pressure bar (SHPB) method. Experimental stress-strain results from granular soils ranging from strain rates of 200 s-1 to 2100 s-1 are presented in this paper. The constitutive equations are calibrated against the experimental data using the Marquardt-Levenberg nonlinear optimization algorithm.
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Information & Authors
Information
Published In
Geo-Chicago 2016
Pages: 600 - 609
Copyright
© 2016 American Society of Civil Engineers.
History
Published online: Aug 11, 2016
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ASCE Technical Topics:
- Clays
- Engineering fundamentals
- Engineering materials (by type)
- Geomechanics
- Geotechnical engineering
- Granular materials
- Granular soils
- Material mechanics
- Materials engineering
- Mathematics
- Parameters (statistics)
- Soil dynamics
- Soil mechanics
- Soil pressure
- Soil properties
- Soil stress
- Soils (by type)
- Statistics
- Strain
- Strain rates
Authors
Affiliations
M. Jafari
Dept. of Civil Engineering, Univ. of Toronto, 35 St. George, Toronto, ON, Canada M5S 1A4.
P. Kanopoulos
Dept. of Civil Engineering, Univ. of Toronto, 35 St. George, Toronto, ON, Canada M5S 1A4.
K. Xia
Dept. of Civil Engineering, Univ. of Toronto, 35 St. George, Toronto, ON, Canada M5S 1A4.
M. Grabinsky
Dept. of Civil Engineering, Univ. of Toronto, 35 St. George, Toronto, ON, Canada M5S 1A4.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.