Modeling of liquefaction using two-phase FEM with UBC3D-PLM model

Modeling of liquefaction using two-phase FEM with UBC3D-PLM model

Wobbes, Elizaveta (TU Delft Numerical Analysis)
Beuth, Lars (Deltares)
Vuik, Cornelis (TU Delft Numerical Analysis)
Stolle, D.F. (McMaster University)

2017

Soil liquefaction describes a loss of strength of saturated sand upon sudden or cyclic loading. A slight disturbance of such a soil’s fabric might lead to severe damage, e.g. the collapse of sea dikes. Accurate modeling of the state transition between saturated soil and a liquefied soil-water mixture, as well as post-liquefaction phenomena, is crucial for the prediction of such damage. However, developing an appropriate numerical model remains a challenging problem, especially when the simulation involves dynamic large deformation processes. In order to make a first step towards an accurate simulation of soil liquefaction, a two-phase formulation of the finite element method (FEM) in conjunction with the elastoplastic UBC3D-PLM model is investigated. The performance of this approach is analyzed based on a shaking table benchmark.

MPM
elastoplastic model
liquefaction
cycic loading.

http://resolver.tudelft.nl/uuid:a4717317-ee2c-4fb3-93bb-b0ae326f8b2b

https://doi.org/10.1016/j.proeng.2017.01.043

1877-7058

Procedia Engineering, 175, 349-356

1st International Conference on the Material Point Method, 2017-01-10 → 2017-01-13, Deltares, Delft, Netherlands

Institutional Repository

journal article

© 2017 Elizaveta Wobbes, Lars Beuth, Cornelis Vuik, D.F. Stolle