Ring section

Structural Design User Guide

Sections : Ring section

A ring GENSEC is used to create full or partial ring sections.

On the SECTIONS tab, in the Create group, click Create Sections, select Curved to display the Curved Section window.

All the tasks that the user would carry out with the creation of a ring section are initiated from a central Curved Section window which acts as a task hub.

Circle Definition

The user must first state whether the ring section is to be an arc section or full circle section. From the Circle Definition part of the Ring window, click Arc or Full.

Creation Methods

To create a ring section, the user can select one of 17 creation methods from the Create Methods part of the Ring window.


	Through 3 points	The user must select 3 points through which the full circle will pass or in the case of an arc a start middle and end. If required the user can use the functionality displayed in the Positioning Control window. The user is prompted to ‘Define ring section first point Distance[0]) Snap:’ Once the first selection has been made, the user is prompted to Define ring section second point (Distance[0]) Snap:’ Once the second selection has been made, the user is prompted to Define ring section third point (Distance [0]) Snap:’ The user must then select the final point, the right angled section is automatically created and displayed in the 3D view.
	Derive from a picked item	The user must select an element from the 3D view from which the radius and centre of circle can be derived. The user is prompted to ‘Define ring section - derived from picked item’
	Fillet	The user must enter a radius for the fillet in the Radius window, the default is 0mm. The user can input the radius directly into the Radius field or select Measure Distance Start/End to select elements in the 3D view. The user is then prompted select to ‘Define ring section First element’ in the 3D view. On selection of the first element, the user is prompted to ‘Define ring section Second element’ in the 3D view. These two elements will be tangential to the required circle.
	Tangential to 3 lines	The user must pick three linear design items to define the circle which will fit between these tangents. The plane of the ring is normal to, and midway between, the first two lines.
	Fixed radius, tangential to a circle	The user to enter the required radius on a separate form, pick a position towards which the circle will be directed (the control point), and then pick a design item from which the circle can be derived. The ring will be tangential to the derived circle on the side specified by the control point.
	Fixed radius, passing through 2 points	The user must enter the required radius on a separate form and then pick two positions defining the start and end of the ring. A control point is then picked. This is the point to which the circle will be directed.
	Tangential to a circle	The user must pick a position defining the centre of the ring, then pick a design item from which the circle can be derived. The ring will be tangential to the derived circle and the radius will be the distance from first pick to the tangent point.
	Tangential to 2 circles	The user must enter the required radius on a separate form. Then, on two coplanar circular design items, pick positions near points where the ring is to touch tangentially and also a point near the centre of ring.
	Derived diameter	The user must select 3 points which determines the diameter of the arc/ circle and a point to which the arc/circle can be directed. The user is prompted to ‘Define ring section first point (Distance [0]) Snap:’ once the first point has been selected in the 3D view. The user is then prompted to ‘Define ring section second point (Distance [0]) Snap:’ once the second point has been selected. The user is then prompted to ‘Define ring section control point (Y) (Distance [0]) Snap:’.
	Derived diameter on working plane	Before the user can define a diameter in the 3D view a active working plane must be defined. For more information on active working plane, refer to Common Functionality Guide, Working Plane. The user must select 2 points which determines the diameter of the arc/circle. The arc/circle The user is prompted to ‘Define ring section first point (Distance [0]) Snap:’, once the first point has been selected in the 3D view. The user is then prompted to ‘Define ring section second point (Distance [0]) Snap:’ once the second point has been selected. The arc/full ring section is projected on to the active working plane and the ring section is lies in the plane.
	Fixed diameter	The user must select 3 points, a centre point, start and end point for the arc/circle. A Diameter window is displayed, the user must enter a radius for the section in the Diameter window or select Measure to select elements in the 3D view. The default is 0mm. If required the user can use the functionality displayed in the Positioning Control window. The user is prompted to ‘Define ring section define centre Distance[0]) Snap:’ Once selection of the centre of the section has been made, the user is prompted to Define ring section (X) (Distance[0]) Snap:’ Once the second selection has been made, the user is prompted to Define ring section (Y) (Distance [0]) Snap:’ The user must then select the final point, the ring section is automatically created and displayed in the 3D view.
	Fixed diameter on working plane	Before the user can define a diameter in the 3D view a active working plane must be defined. For more information on active working plane, refer to Common Functionality Guide, Working Plane. A Diameter window is displayed, the user must enter a radius for the section in the Diameter window or select Measure to select elements in the 3D view. The default is 0mm. The user must select the centre point of the arc/circle ring section, and the user is prompted to ‘Define ring section centre (Distance [0]) Snap:’. Once the centre has been selected in the 3D view. The arc/full ring section is created as a anti clockwise 180° arc about the Z axis of the working plane with a start point on the X-axis.
	Derived radius	The user must select 3 points, a centre point, start point and an end point aligned with the end of the ring section, through which the arc/circle. The last two selections define the radius of the ring section. If required the user can use the functionality displayed in the Positioning Control window. The user is prompted to ‘Define ring section centre (Distance[0]) WP Snap:’ Once selection of the centre of the section has been made, the user is prompted to Define ring section radius through point (Distance[0]) Snap:’ Once the second selection has been made, the user is prompted to Define ring section control point (Y) (Distance [0]) Snap:’
	Derived radius on working plane	Before the user can define a diameter in the 3D view a active working plane must be defined. For more information on active working plane, refer to Common Functionality Guide, Working Plane. If required the user can use the functionality displayed in the Positioning Control window. The user must select the centre point of the arc/circle ring section, and the user is prompted to ‘Define ring section centre (Distance [0]) Snap:’. Once the centre has been selected in the 3D view. The user is prompted to ‘Define section radius through point (Distance [0]) WP Snap. The arc/full ring section is created as a anti clockwise 180° arc about the Z axis of the working plane.
	Fixed radius	The user must select 3 points, a centre point, start and end point of the arc/circle. A Radius window is displayed, the user must enter a radius for the section in the Radius window or select Measure to select elements in the 3D view. The default is 0mm. If required the user can use the functionality displayed in the Positioning Control window. The user is prompted to ‘Define ring section define centre Distance[0]) Snap:’ Once selection of the centre of the section has been made, the user is prompted to Define ring section (X) (Distance[0]) Snap:’ Once the second selection has been made, the user is prompted to Define ring section (Y) (Distance [0]) Snap:’ The user must then select the final point, the ring section is automatically created and displayed in the 3D view.
	Fixed radius on working plane	Before the user can define a diameter in the 3D view a active working plane must be defined. For more information on active working plane, refer to Common Functionality Guide, Working Plane. A Radius window is displayed, the user must enter a radius for the section in the Radius window or select Measure to select elements in the 3D view. The default is 0mm. The user must select the centre point of the arc/circle ring section, and the user is prompted to ‘Define ring section centre (Distance [0]) Snap:’. Once the centre has been selected in the 3D view. The arc/full ring section is created as a anti clockwise 180° arc about the Z axis of the working plane with a start point on the X-axis.
	Define explicitly	For more information, refer to Define explicitly.

Define explicitly

The user can create a ring section (either arc or full) then explicitly position the ring section.

From the Creation Methods part of the Ring window, select Define explicitly, the Create Section (Ring) window is displayed.

The Create Section (Ring) window is a dual purpose create/modify window, by default the Create Section (Ring) window is displayed. To modify the ring section, refer to Modify Section (Ring).

The user can use the functionality available from the window to specify the setting, position and orientation of a new ring section.

Before the user can begin the creation of ring section explicitly, a radial grid must be created, for more information on radial grid, refer to Common Functionality Guide - User Grid Systems.

Settings

From the Settings part of the Create Section (Ring) window, the user can specify the radius, start and end angles along with the direction in which the ring section is to be created (Clockwise or Anti-Clockwise).

By default the radius is 1000mm, if required the user can input the radius into the Radius field.

The start and end angles (points) must now set, from the Angles part of the Create Section (Ring) window. By default the Start angle is 0° and the End angle is 180° with an Anti-clockwise direction. Modify as required.

Use the Position & Orientation part of the Create Section (Ring) window to position and orientate the ring section. However the position and orientation functionality available from the Create Section (Ring) window is identical to that available from the Design Aid functionality, for more information refer to Common Functionality Guide.

Click Apply to create the ring section.

Click Dismiss to discard any inputs and close the Create Section (Ring) window.

Modify Section (Ring)

The settings, position and orientation of a ring section can be modified, first the user must select the ring section to be modified in the model explorer, then click Select. From the drop down list, select CE or Pick (to select the section in the 3D view), the Modify Section (Ring) window is displayed.

Modify the settings, position or orientation of the ring section and then Apply to commit the changes.