Circular Radius Generation

Circular Radius - tab

The Rotation Axis defines the axis to which the direction of the circular radius is oriented.

The Sweep Angle defines the ending angle of the circular radius arc.

The Start Angle defines the starting angle of the circular radius arc.

The Sweep Increment defines how many piecewise straight segments are used to model the arc.

The Polar Origin defines the center point of the disk. It is the reference point from which the arc height and width are measured and the rotation axis is defined.

A global axis is entered as the axis of rotation (X, Y or Z) and the disk will be in the plane normal to the axis of rotation. You can generate a grid the full 360 degrees around the axis of rotation or generate a partial grid by specifying the start and sweep angles.

The Inner Radius defines the radius of the “hole” in the center. This distance must be greater than zero and less than the end radius entry.

The Outer Radius defines the total length from the polar origin out to the edge of the grid.

The Radius Increment defines the number of increments along the radius tells RISA-3D how many “rings” to use to create the grid.

The Material option defines the material used to assign properties to the circular radius members.

The Node Prefix Defines the prefix used in the node label for each new node generated.

Options - tab

(checkbox) The Axis Member option allows you to toggle members being drawn in the Axis.

Section Set defines the section set assigned axis members or arch members.

There are entries for a section set for both the arc members and the radius members so these two sets of members can be different sizes. To generate these members you must select a valid section set. If you don’t select a section set, you won't generate these members. You may also have unique labels assigned to the generated members by entering a start label.

The X-axis Rotate option defines the local x-axis rotation of the arc relative to the global X axis. It can be used to rotate the local axis in to place. However, you may find that a K-node better serves this purpose.

The Member Prefix defines prefix to member labels for members created using the generator.

(checkbox) When selected, this option allows for the drawing of members into several segments or a single member.

(checkbox) The Plates option allows you to draw plates between members generated using the Grid Generation.

You enter a material set and thickness to have plates defined. Only quadrilateral plates are generated. You can also have unique labels assigned to the generated plates by entering a start label.

The Material option defines the material used to assign properties to the cone members.

A Material Set for plates must be defined.

The Thickness option defines the thickness of the plate.

A Thickness for plates must be defined.