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Task 4: DEM Modeling of Soil-Pile System Status Report

Task 4: DEM Modeling of Soil-Pile System Status Report. Claudia Medina Mourad Zeghal RPI, February 15, 2005. Objective. DEM modeling of soil-pile system Coupled Soil-Pile model Flexible (Elastic) Pile . Soil-Pile System. Soil-Pile Model. Soil: Discrete Element Method (DEM)

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Task 4: DEM Modeling of Soil-Pile System Status Report

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  1. Task 4: DEM Modeling of Soil-Pile SystemStatus Report Claudia Medina Mourad Zeghal RPI, February 15, 2005

  2. Objective • DEM modeling of soil-pile system • Coupled Soil-Pile model • Flexible (Elastic) Pile

  3. Soil-Pile System

  4. Soil-Pile Model • Soil: Discrete Element Method (DEM) • Pile: FEM (Bernoulli-Euler beam theory) • Algorithm: DEM for particles Forces acting on particles Displacement for particles FEM for pile Displacement for pile Force acting on the pile

  5. Bernoulli-Euler beam theory • Beam finite elements • 2 end nodes and 4 DOF • Neglects transverse shear deformations

  6. Element Equation

  7. K1 K2 K3 [KG]= Kn Global Equation Assembly procedure for the beam with n elements

  8. Model Properties

  9. DEM Simulation t = 0

  10. DEM Simulation t = 0.05 sec

  11. DEM Simulation t = 0.10 sec

  12. DEM Simulation t = 0.15 sec

  13. DEM Simulation t = 0.20 sec

  14. DEM Simulation t = 0.25 sec

  15. DEM Simulation t = 0.30 sec

  16. DEM Simulation t = 0.35 sec

  17. DEM Simulation t = 0.40 sec

  18. DEM Simulation t = 0.45 sec

  19. DEM Simulation t = 0.50 sec

  20. Pile displacement

  21. Pile displacement

  22. Thank you

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