https://communities.bentley.com/products/geotech-analysis/f/forum/236314/interface-soil-soilHi PLAXIS community, I would like to ask you about the soil-soil interface, please. If I want to choose the formula for elastic sliding, which is determined by the elastic shear stiffness of the interface and the function of the interface thicknessen-USTelligent Community 12https://communities.bentley.com/thread/735161?ContentTypeID=1Wed, 05 Oct 2022 07:36:23 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:302442b5-0493-49fa-8498-197b5b2763c7Dennis Waterman<p>Dear Adnan,</p> <p>Interfaces in PLAXIS actually don&#39;t have a real thickness, but only a virtual thickness that is used to determine how stiff the interface should behave. This virtual thickness depends on the global mesh size (hence not the local meshing at the interface) and the virtual interface factor. See the Reference Manual and search for &quot;Virtual interface thickness&quot; as well as the paragraph on the &quot;Interface tabsheet&quot; - this is paragraph 6.1.7 in the latest PLAXIS 2D manual.</p> <p>With kind regards,</p> <p>Dennis Waterman</p><div style="clear:both;"></div>