Fixed Constraint

The node adds a condition that makes the geometric entity fixed (fully constrained); that is, the displacements are zero in all directions on the selected geometrical entities. If there are rotational degrees of freedom, they will also be zero.

Shell Properties


	This section is only present in the in the Layered Shell interface, where it is described in the documentation for the Fixed Constraint node.

Interface Selection


	This section is only present in the in the Layered Shell interface, where it is described in the documentation for the Fixed Constraint, Interface node.

Constraint Settings

To display this section, click the button (

) and select in the dialog box.

In the COMSOL Multiphysics Reference Manual:

•

Constraint Reaction Terms

•

Weak Constraints

•

Constraint Settings

•

Excluded Surfaces, Excluded Edges, and Excluded Points


	You can activate and deactivate this boundary condition by assigning it to a constraint group. See Load Cases in the Structural Mechanics Modeling chapter.

Location in User Interface

Context Menus

Ribbon

Physics tab with selected:

Physics tab with node selected in the model tree: