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Modeling of soil-wall interface (Earth retaining wall)
Posted Oct 15, 2019, 1:46 a.m. EDT Structural & Acoustics, Geomechanics, Structural Mechanics Version 5.4 0 Replies
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Hi, I have been modelling a diaphragm wall with COMSOL. During the modelling I have faced problems to model the interface soil-wall.
It seems that to define an internal boundary condition, one needs to define “pairs”. At the beginning, we tried identity ones, but due to the nature of the problem I decided to take contact pairs instead, to allow new contacts and detachments. For this purpose, I have unsuccessfully tried:
1) Prescribed displacement coupled with a general extrusion to map only the normal displacement from one domain (the soil) to the other (the wall) (simulating frictionless with identity pairs)
2) Contact boundary condition (modelling with contact pairs)
Entually, I want to control the parameters of this interface (say from frictionless to a Mohr–Coulomb failure criteria) similar to what all specialist geomechanics software does.
Thank you for your help
Hello Mateo Garcia
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