You can import meshes from multiple systems into Mechanical. It is possible to combine composite shell, composite solid, and non-layered shell and solid meshes to perform a mixed analysis. Mechanical does not allow the overlap of node/element numbers from multiple systems. The import fails if the mesh node/element numbers from different systems overlap. Meshes from upstream to downstream Mechanical models are renumbered automatically to avoid overlapping. For every analysis system (mesh), you have the choice between automatic renumbering (default) and manual configuration. (See Renumbering and Transfer Type.) If automatic renumbering is disabled, you must ensure that the element/node numbering is unique for each mesh.

Figure 1.42: A Multi-System Analysis in Workbench