To create a solid or hollow (surface) cylinder, on the Geometry toolbar, click Cylinder (). The cylinder is a right circular cylinder — that is, a cylinder that has circles as bases aligned one directly above the other. You can also right-click the Geometry node to add this node from the context menu. Then enter the properties of the cylinder using the following sections:

From the Type list, select Solid or Surface to specify if the cylinder is a solid object or a (hollow) surface object.

Define the size and shape of the cylinder in the Radius and Height fields.

Enter the position of the cylinder using the x, y, and z fields. This is the center of the bottom circle.

Specify the direction of the cylinder’s axis. From the Axis type list, choose x-axis, y-axis, or z-axis (the default) to obtain an axis aligned with the specified coordinate axis. Choose Cartesian to enter a direction vector using the x, y, and z fields. Choose Spherical to enter the direction using the angles theta (polar, zenith) and phi (azimuth).

Specify the rotational angle about the axis in the Rotation field. When this angle is zero (the default), the second axis of the cylinder’s local coordinate system is parallel to the xy-plane.

The coordinate system in which the position, axis, and rotation angles above are interpreted. From the Work plane list, select xy-plane (the default, for a standard global Cartesian coordinate system) or select any work plane defined above this node in the geometry sequence. If you choose a work plane, the work plane and its coordinate system appear in the Graphics window, using an extra coordinate triad with the directions xw, yw, and zw (which are the used to specify the cylinder’s position).

Layers can be used to create sandwich primitives by adding layers on one or more sides. You specify the thicknesses of layers in the Layers table, and optionally a name for each layer. The outermost layer comes first. Select the check boxes to specify where to apply the layers.

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).

Select the Resulting objects selection check box to create predefined selections (for all levels — objects, domains, boundaries, edges, 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 cylinder 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) list: All levels, Domain selection, Boundary selection, Edge 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.