In PLAXIS Designer: Import > File > Choose appropriate DXF contour file
Create: 1. Grid 2. Mesh
Then transfer to PLAXIS 2D LE:
Do this by either: 1. Copy and Paste from PLAXIS Designer to PLAXIS 2D LE Surfaces 2. Create model volume in PLAXIS Designer, then generate PLAXIS 2D LE model
Note: Grids can be generated in PLAXIS 2D LE in similar fashion to how they are generated in PLAXIS Designer, using kriging. This is done in the Surfaces dialog.
Note: meshes cannot be generated in PLAXIS 2D LE, only copied from PLAXIS Designer or other meshing platforms