Geogrid problem when modelling in Plaxis

[H. A.]

Hello everyone,

I am using geogrid element in plaxis to model a soil embankment with protective liner in consolidations settlement analysis.
As you could see in the screenshot below, the geogrid behavior is not what one might expect. Does anyone know what would be the potential reason?

 

[GeoEnvGuy]

There is a lack of information provided, but I suspect that your material properties are causing the issue.

 

[H. A.]

Thanks GeoEnvGuy for your reply. What more information could help? What do you mean by material properties?