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Training Course 2017 - Delft

The second Anura3D Training Course "Modelling large deformation and soil–water–structure interaction using the material point method" as part of the MPM–DREDGE project and MPM 2017 Conference has been held on 12–13 January 2017 led by Prof Kenichi Soga at Deltares Delft, The Netherlands.

Soil–water–structure interaction

Large deformation and soil–water–structure interaction exists in many environmental and civil engineering problems, such as landslides and slope instabilities, installation of piles in saturated soils, settlement due to consolidation processes, fluidisation and sedimentation processes in submerged slopes, internal erosion in dykes, and scouring around offshore structures. Modelling these processes is challenging due to hydro-mechanical coupling, large deformation, and contact problems.

The material point method (MPM) is a point-based numerical approach capable of modelling large deformations and recently, within the framework of the MPM Research Community, it has been extended to cope with complicated soil–water–structure interactions.

The Anura3D v2017.1 software uses a dynamic MPM formulation based on a single set of material points. This is capable of simulating 1- and 2-phase materials and free surface water. A fully coupled hydro-mechanical approach is implemented to model the interaction between soil and water phases in saturated porous media, which is understood as a continuum mixture of solid skeleton and pore fluid. Additionally, contact problems can also be solved since a contact algorithm is available. Finally, a library of material constitutive laws is included as well as a umat style interface for external user defined soil models subroutines.

Figure 1: Example of tutorial exercises. Modelling of a soil column collapse. The deviatoric strain is shown.

Figure 2: Example of tutorial exercises. Modelling of a shallow foundation. The deviatoric strain is shown.

Tutored exercises

Course participants will gain experience as users of the Anura3D v2017.1 MPM software. During training lectures, the attendees will learn first-hand capabilities of MPM by means of a set of practical exercises that will be undertaken following a tutorial specially designed for the course. The tutorial includes the following exercises:

  • Exercise 1: Oedometer problem, modelling of dynamic consolidation in combinations with large deformation;
  • Exercise 2: Sliding blocks, modelling of contact behaviour including multiple interacting bodies;
  • Exercise 3: Column collapse (Figure 1), modelling the failure of soil as two-phase material and for pure water;
  • Exercise 4: Shallow foundation (Figure 2), modelling of soil–structure interaction and plastic soil failure.

File summary

# File name File type File size Description
1 Tutorial_2017_1.pdf PDF 29.6M Tutorial Manual (v2017.1)
2 Scientific_2017_1.pdf PDF 3.30M Scientific Manual (v2017.1)
3 Verification_2017_1.pdf PDF 3.00M Verification Manual (v2017.1)
4 Anura3D_2017_1.gid.zip ZIP 49.6M Anura3D problemtype for GiD (v2017.1)