Antisymmetry
This node is available only in 3D.
The Antisymmetry node adds a boundary condition for an antisymmetry boundary. An antisymmetry condition is fixed in the plane and free in the out-of-plane direction. The antisymmetry plane is formed by the normal to the boundary and the edge tangent.
Face Defining the Local Orientations
If symmetry is prescribed for an edge which is shared between boundaries, the edge system can be ambiguous. Select the boundary which should define the edge system. The default is Use face with lowest number.
Constraint Settings
To display this section, click the Show More Options button () and select Advanced Physics Options in the Show More Options dialog box.
In the COMSOL Multiphysics Reference Manual:
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Constraint Reaction Terms
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Weak Constraints
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Constraint Settings
Symmetry Constraints
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
Membrane>More Constraints>Antisymmetry
Ribbon
Physics tab with Membrane selected:
Edges>More Constraints>Antisymmetry