Stabilizing the Shell Model As you did for the solid model, you fix a vertex of the shell model to prevent motion in the axial direction. To stabilize the model: In the Simulation study tree, right-click Fixtures and select Fixed Geometry. In the PropertyManager under Standard (Fixed Geometry), select the vertex shown for Faces, Edges, Vertices for Fixture . Click . Parent topicSymmetry Restraints for Solid and Shell Models Previous topic Applying Symmetry Fixtures to Shell Edges Next topic Running the Shell Study