Connect Two Dissimilar Meshes
Connect two dissimilar meshes using displacement constraint elements.
- From the menu bar, click Aerospace > Loads/BCs > RSpline.
 - 
                Select the Independent nodes.
                

Figure 1. Connecting two Dissimilar Meshes using the Nastran Displacement Constraint Element-RSpline - 
                Select the Dependent nodes and their degrees of
                    freedom.
                A new component is created, and the RSpline elements are added to the component.
 - 
                Click the Edit tab to correct the sequence or review it. 
                

Figure 2. Dissimilar Meshes are Connected with RSpline Element