Frictionless Face

You use this boundary condition to prevent one or more flat or curved faces from moving or deforming in the normal direction. The normal direction is relative to the selected geometry face. No portion of the surface body can move, rotate, or deform normal to the face.

For tangential directions, the surface body is free to move, rotate, and deform tangential to the face.

For a flat surface body, the frictionless support is equivalent to a symmetry condition.

Analysis Types

A Frictionless Support is available for the following analysis types:

Common Characteristics

The following section outlines the common boundary condition characteristics that include application requirements of the boundary condition, support limitations, as well as loading definitions and values.

Dimensional Types

Geometry Types: Geometry types supported for the Frictionless Support boundary condition include:

Topology: The following topology selection options are supported for Frictionless Support.

Boundary Condition Application

To apply a Frictionless Support:

  1. On the Environment context toolbar: click Supports>Frictionless Support. Or, right-click the Environment tree object or the Geometry window and select Insert>Frictionless Support.

  2. Specify Scoping Method and Geometry or Named Selection.

Details View Properties

The selections available in the Details view are described below.

CategoryFields/Options/Description
Scope

Scoping Method: Options include:

  • Geometry Selection: Default setting, indicating that the boundary condition is applied to a geometry or geometries, which are chosen using a graphical selection tools.

    • Geometry: Visible when the Scoping Method is set to Geometry Selection. Displays the type of geometry (Body, Face, etc.) and the number of geometric entities (for example: 1 Body, 2 Edges) to which the boundary has been applied using the selection tools.

  • Named Selection: Indicates that the geometry selection is defined by a Named Selection.

    • Named Selection: Visible when the Scoping Method is set to Named Selection. This field provides a drop-down list of available user-defined Named Selections.

Definition

Type: Read-only field that describes the object - Frictionless Support.

Suppressed: Include (No - default) or exclude (Yes) the boundary condition.


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