Answer:
The definition of different properties in the tension and compression area of a line release is possible, as shown in Image 01.
For a line release between two surfaces, however, a special feature regarding the released surface must be taken into account. In the attached model, an identical line release is defined. In the left model, the bottom Surface 1 is released, but in the right model, the top Surface 4 is released. For both surfaces, the local y‑axis of the surface is aligned parallel to the global z‑axis.
The deformation diagram results in completely different deformations for both models.
In the left model with the lower released surface, the pressed area is very soft. For this axis orientation, the reaction force of Surface 2, pressing on Surface 1 from above, is very soft.
In the model on the right, the upper surface is released, so that the reaction force of Surface 4 pressing on Surface 3 from above is very rigid.
