The drawbead is created, and can be modified if necessary.  For quick drawbead creation, click the two end points of the approximate line along which the centerline of the bead is oriented.  For a curved surface, to locate the bead, HyperForm automatically projects the line between the two end nodes onto the neighboring mesh.  Nodes can be added or removed from the drawbead using the update function.

The lock subpanel should be used in conjunction with the above steps to create a lockbead condition. A lockbead and a drawbead cannot be created under the same drawbead name.

For a lockbead, HyperForm applies constraint on the nodes.  If you have a lockbead created using the end nodes only, the nodes in between are still free to move across the lockbead line.  In order to prevent this, HyperForm uses a tolerance (5 mm) to capture the nodes near the lockbead line.  Due to this tolerance, the lockbead sometimes appears zigzagged.

If necessary, you can remove drawbead collectors that you have created.  However, the default collector, Drawbead_1, can be modified but not deleted.

The Lock subpanel should be used in conjunction with the above steps to update a lockbead condition.  A lockbead and a drawbead cannot be updated under the same drawbead name.

The drawbead is removed.

The lock subpanel should be used in conjunction with the above steps to remove a lockbead condition.

The restraining force is the value of the force (per unit length) applied by the bead in the plane of the blank surface.  The closure force is the force (per unit length) required in the perpendicular direction to keep the drawbead closed.

If the geometry is such that a necking condition exists, the message, Material Locking Condition is displayed on the menu bar.