Apply the Constraints

We will now apply the surface constraints to the symmetry planes and a nodal constraint to the bottom of the vessel.

1. Click View Navigate Orientation Front View.
2. With  the Selection Shape Point or Rectangle and Selection Select Surfaces commands active, click and drag to draw a rectangle enclosing the top edge of the model, as shown below.

   

3. Click Setup Constraints General Constraint.
   1. Click Z Symmetry.
   2. Click OK.
4. Draw a selection rectangle enclosing the right edge of the model, as shown below.

   

5. Click Setup Constraints General Constraint.
   1. Click X Symmetry.
   2. Click OK.
6. Click the Home icon that appears above the ViewCube when the cursor is in that area. An isometric view of the model is displayed.
7. Select View Navigate Zoom Window. Draw a box around the bottom corner of the pressure vessel to zoom into this corner, as shown in the following image.
   
   • Press Esc to exit the Zoom Window command.
8. With the Selection Select Vertices command active, click the node at the bottom corner of the model, as shown highlighted below.

   

9. Click Setup Constraints General Constraint.
   1. Click Fixed.
   2. Click OK.  

Next