#### 2.1.3.2. Edge Sets

Named Selections of connected edges in Mechanical are transferred to ACP as Edge Sets. New Edge Sets can also be defined manually in ACP-Pre:

Figure : Edge Set Definition

- Edge Set Type: How the Edge Set is defined:

  - By Reference: Defined the Edge Set using an existing Element Set (activates the following options):

    - Element Set: The Element Set of which the Edge Set is part.

    - Limit Angle: The Edge Set is extended from the origin in both directions until the angle between two elements is bigger than the Limit Angle. If the Limit Angle is set to a negative value, the Edge Set is the whole boundary of the selected Element Set.

    - Origin: Origin to determine the closest boundary.

- By Reference: An existing Element Set is used to define a new Edge Set through one boundary limited by an angle diffusion.

- By Nodes: Manually select the nodes to define the Edge Set.

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