Description: In some cases the geometry of one surface of a thin shell-like body is known accurately and is used to construct the model in a preprocessor. If double-sided elements are defined on this surface, an offset must be defined to specify the position of the midsurface with respect to the reference surface (see Figure 11–4). This offset must be accounted for in general contact to model the contact behavior correctly. By default, all offsets specified on element section definitions are recognized by the general contact algorithm. In addition, the default offset used in the general contact algorithm can be changed (for example, to ignore shell element offsets).

Interaction module:
   InteractionCreate: General contact (Explicit): Surface Properties:
   Shell/Membrane offset assignments: Edit