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Abstract
Material Point Method (MPM) is a numerical method, which is well suited for large displacement simulations. Large displacements problems are relatively common in geotechnics, including post-failure behaviour of landslides as well as a wide range of problems involving penetration into the soil body. One of those problems is the fall-cone test, commonly used to establish the undrained shear strength and the sensitivity of saturated fine grained soils.
This paper shows a Generalized Interpolation Material Point Method (GIMP) simulation replicating published free-fall cone experiment performed on a kaolin clay. In the fall-cone tests, the penetration characteristics of the cone, such as velocity and total penetration depth depend on the soil properties. Those properties are affected greatly by the strain-rate which must be accounted for in a numerical simulation. Hence, the simulations shown uses a Mohr-Coulomb / Tresca material extended with strain-rate effects.
The presented numerical simulations are compared with the published fall-cone experiment in which displacement and force were measured. The comparison indicates that Generalized Interpolation Material Point Method and Mohr-Coulomb / Tresca model extended with strain-rate effects are able to replicate the fall-cone penetration test very well.
This paper shows a Generalized Interpolation Material Point Method (GIMP) simulation replicating published free-fall cone experiment performed on a kaolin clay. In the fall-cone tests, the penetration characteristics of the cone, such as velocity and total penetration depth depend on the soil properties. Those properties are affected greatly by the strain-rate which must be accounted for in a numerical simulation. Hence, the simulations shown uses a Mohr-Coulomb / Tresca material extended with strain-rate effects.
The presented numerical simulations are compared with the published fall-cone experiment in which displacement and force were measured. The comparison indicates that Generalized Interpolation Material Point Method and Mohr-Coulomb / Tresca model extended with strain-rate effects are able to replicate the fall-cone penetration test very well.
Original language | English |
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Pages (from-to) | 293-301 |
Number of pages | 9 |
Journal | Procedia Engineering |
Volume | 175 |
DOIs | |
Publication status | Published - Jan 2017 |
MoE publication type | A4 Article in a conference publication |
Event | International Conference on the Material Point Method for Modelling Large Deformation and Soil–Water–Structure Interaction - Delftares, Delft, Netherlands Duration: 10 Jan 2017 → 13 Jan 2017 Conference number: 1 http://mpm2017.eu/home |
Keywords
- generalized interpolation material point method
- fallcone test
- strain rate effects
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Projects
- 1 Finished
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Progressive failure and post-failure modelling of slopes with Generalized Interpolation Material Point Method
Sołowski, W., Lei, X. & Seyedan, S.
01/09/2015 → 31/08/2019
Project: Academy of Finland: Other research funding
Activities
- 1 Conference presentation
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First international Conference on the Material Point Method MPM2017
Quoc Anh Tran (Speaker)
10 Jan 2017 → 13 Jan 2017Activity: Talk or presentation types › Conference presentation