Ellipse
To create a ellipse, you can:
•
Right-click the Geometry node and add an Ellipse node to the sequence then define it in the Settings window, or
•
On the 2D Geometry toolbar Draw group, from the Circle () menu, select Ellipse () or Ellipse (Corner)().Then draw the ellipse in the Graphics window. Also see Drawing Geometric Primitives in the Graphics Window.
To draw an ellipse for a 2D model, click Ellipse or Ellipse (Corner). Then, click the ellipse’s center (or one corner of the ellipse’s bounding box) in the Graphics window. Drag the mouse to the desired position of a corner of the ellipse’s bounding box. When you release the mouse button, a solid ellipse appears, and an Ellipse node appears in the geometry sequence.
When you have added a node or finished drawing the ellipse in the Graphics window, you can use the following section to define it or fine tune it:
Object Type
From the Type list, select Solid or Curve to specify if the ellipse is a solid object or a curve object.
When using the geometry toolbar, the Solid button () is available to toggle between drawing a solid object or an outline (or curve) instead of selecting an Object Type. See Geometry Drawing Toolbar Buttons for other drawing toolbar buttons.
Size and Shape
Define the ellipse’s semiaxes in the a-semiaxis and b-semiaxis fields. Enter a sector angle (in degree) for an ellipse sector in the Sector angle field. The default value is 360 degrees for a full ellipse.
Position
Enter the position of the ellipse using the x and y fields (r and z in 2D axial symmetry, xw and yw in work planes). From the Base list, choose Center if the ellipse is centered about the position, or choose Corner if a surrounding box has one corner at the position.
Rotation Angle
Specify the counterclockwise rotational angle about the base point in the Rotation field. The default angle is 0 degrees.
Layers
Layers can be used to create sandwich primitives by adding several concentric ellipses. You specify the thicknesses of layers in the Layers table, and optionally a name for each layer. The outermost layer comes first. Each layer must have a minimal thickness (depending on the size of the geometry).
Selections of Resulting Entities
Select the Resulting objects selection check box to create predefined selections (for all levels — objects, domains, boundaries, and points — that are applicable) in subsequent nodes in the geometry sequence. To also make all or one of the types of resulting entities (domains, boundaries, edges, and points) that the ellipse consists of available as selections in all applicable selection lists (in physics and materials settings, for example), choose an option from the Show in physics (Show in instances if in a geometry part; Show in 3D in a plane geometry under a work plane in a 3D component) list: All levels, Domain selection, Boundary selection, or Point selection. The default is Domain selection, which is suitable for use with materials and physics defined in domains. For use with a boundary condition, for example, choose Boundary selection. These selections do not appear as separate selection nodes in the model tree. Select Off to not make any selection available outside of the geometry sequence. From the Color list, choose a color for highlighting the resulting objects selection. See Selection Colors.
Cumulative Selection
If you want to make the resulting entities contribute to a cumulative selection, select a cumulative selection from the Contribute to list (the default, None, gives no contribution), or click the New button to create a new cumulative selection (see Cumulative Selections).