Evaluating Dilation and Mesh Dependency in Geotechnical FEM Simulations using Non-Associated Plasticity
S.R. Dhauri (TU Delft - Civil Engineering & Geosciences)
R.B.J. Brinkgreve – Graduation committee member (TU Delft - Geo-engineering)
C. Zwanenburg – Graduation committee member (TU Delft - Geo-engineering)
M. Lesueur – Graduation committee member (TU Delft - Applied Mechanics)
A.M. Dortland – Mentor (Witteveen+Bos)
J. de Greef – Mentor (Witteveen+Bos)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
The study focused on the use of associated and non-associated plasticity models in FEM simulations, with particular focus on the role of the dilatancy angle. The dilatancy angle was shown to significantly influence both the shear strength, the deformation behaviour of soils and the mesh dependence of model outcome, particularly in situations with confined or constrained deformation. To evaluate this, three cases were analyzed: Direct Simple Shear (DSS) test, slope stability, retaining structure.