Geo-Congress 2020
Discrete Element Modelling of Large Scale Stacked-Ring Simple Shear Test of Steel Spheres
Publication: Geo-Congress 2020: Modeling, Geomaterials, and Site Characterization (GSP 317)
ABSTRACT
Traditionally, geotechnical engineers have used continuum numerical methods coupled with complex constitutive models to analyze soil response. This approach, however, does not explicitly consider the particle-scale interactions underlying the macro-scale behavior. Given the advances in computational power, particle-based discrete element methods have been progressively catching the attention of geotechnical engineers in simulating and analyzing soil behavior. For validation of discrete element modeling of various laboratory tests, many researchers have been using idealized granular materials such as steel spheres that are much simpler to model compared to real soils. In case of experimental validation of models for simple shear test using stacked-ring device type, it is particularly important to ensure that the simple shear condition is completely imposed on specimens consisting of low friction and freely rotating steel spheres. In this study, discrete element modeling is used to examine the level of simple shear imposition on specimen of uniform-sized steel spheres in large scale stacked-ring simple shear device under constant volume conditions.
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Information & Authors
Information
Published In
Geo-Congress 2020: Modeling, Geomaterials, and Site Characterization (GSP 317)
Pages: 491 - 500
Editors: James P. Hambleton, Ph.D., Northwestern University, Roman Makhnenko, Ph.D., University of Illinois at Urbana-Champaign, and Aaron S. Budge, Ph.D., Minnesota State University, Mankato
ISBN (Online): 978-0-7844-8280-3
Copyright
© 2020 American Society of Civil Engineers.
History
Published online: Feb 21, 2020
ASCE Technical Topics:
- Discrete element method
- Engineering fundamentals
- Engineering materials (by type)
- Geometry
- Geotechnical models
- Laboratory tests
- Materials engineering
- Mathematics
- Metals (material)
- Methodology (by type)
- Models (by type)
- Numerical methods
- Numerical models
- Scale models
- Shear tests
- Soil tests
- Spheres
- Steel
- Tests (by type)
Authors
Metrics & Citations
Metrics
Citations
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