Numerical Simulations of Granular Materials Using Smoothed Particle Hydrodynamics Method
Publication: Advances in Unsaturated Soil, Geo-Hazard, and Geo-Environmental Engineering
Abstract
The application of Smoothed Particle Hydrodynamics (SPH) method to the simulation of granular materials under large deformation is presented. The Drucker-Prager constitutive model with non-associated flow rule is implemented into the SPH formulations to model the granular flow in a continuum framework. Simulations of the collapse of 3-D axisymmetric sand columns with various aspect ratios are conducted to validate the developed model. Numerical results of the granular flow pattern and final runout distance are in good agreement with the experimental observations as reported in literature. This study indicates that despite being a continuum-scale model, the developed SPH model can be used to effectively simulate large deformation and dense flow of granular materials, and geomaterials in general if proper constitutive models are implemented. Therefore, the developed model may find applications in various problems involving dense granular flow such as landslides and debris flow.
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Copyright
© 2011 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Continuum mechanics
- Deformation (mechanics)
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Fluid dynamics
- Fluid mechanics
- Granular materials
- Hydrodynamics
- Hydrologic engineering
- Materials engineering
- Methodology (by type)
- Models (by type)
- Numerical methods
- Numerical models
- Particles
- Simulation models
- Solid mechanics
- Structural mechanics
- Three-dimensional models
- Water and water resources
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