Inserts embedded void cracks of a hallow disc shape into a solid body.
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Object Properties
The Details Pane properties for this object include the following.
Category | Properties/Options/Descriptions | |
---|---|---|
Scope |
Source: Read-only property set to Analytical Crack Scoping Method: Read-only property set to Geometry Selection. Geometry: Use the Body selection filter to pick a solid body, click in the Geometry field, then click . | |
Definition |
Crack ID: A read-only property that displays a unique system generated identification value. The application uses this identifier when creating solution identifiers for fracture parameters. Coordinate System: Specify the coordinate system that defines the orientation of the crack. The Y axis of the specified coordinate system must be directed towards the normal of the crack plane and the crack plane always lies in the X-Z plane of the specified coordinate system. Crack Shape: Read-only property set to Ring. Outer Major Radius: Specifies the outer major radius, which
defines the size of the crack shape along the Z axis (that is, the width of the
crack). Enter a value greater than Outer Minor Radius: Specifies the outer minor radius, which
defines the size of the crack shape along the X axis (that is, the depth of the
crack). Enter a value greater than Inner Major Radius: Specifies the inner major radius, which
defines the size of the inner crack shape along the Z axis (that is, the width of
the crack). Enter a value greater than Inner Minor Radius: Specifies the inner minor radius, which
defines the size of the inner crack shape along the X axis (that is, the depth of
the crack). Enter a value greater than Mesh Method: This property enables you to select the mesh method to be used to mesh the crack. Options include (default) and . Note: When this crack intersects with the free surfaces of a solid body, the setting is not supported. Largest Contour Radius: Specifies the largest contour
radius for the crack shape. Enter a value greater than Growth Rate: This property is only visible when the
Mesh Method property is set to
. It specifies the factor with which the mesh
layers will grow along the radius of the crack. Specify a value greater than
Outer Crack Front Divisions: This property is only visible
when the Mesh Method property is set to . It specifies the number of divisions for the outer crack
front. Your entry must be equal to or greater than Inner Crack Front Divisions: This property is only visible
when the Mesh Method property is set to . It specifies the number of divisions for the inner crack
front. Your entry must be equal to or greater than Outer Front Element Size: This property is only visible
when the Mesh Method property is set to
. It specifies the element size for the outer
crack front. The default value is computed using crack length. Specify a value
greater than Inner Front Element Size: This property is only visible
when the Mesh Method property is set to
. It specifies the element size for the inner
crack front. The default value is computed using crack length. Specify a value
greater than Fracture Affected Zone: This property is only visible when the Mesh Method property is set to . This is the region that contains a crack. This property defines the height of the fracture affected zone. Property options include:
Fracture Affected Zone Height: This property is only visible when the Mesh Method property is set to . This value specifies two things: 1) the height of the Fracture Affected Zone, which is in the Y direction of the crack coordinate system, and 2) the distance in totality by which the Fracture Affected Zone is extended in the positive and negative Z direction of the crack coordinate system from the crack front extremities.
Important: The crack generation process will fail if buffer zones overlap. Circumferential Divisions: This property is only visible
when the Mesh Method property is set to . It specifies the number of circumferential divisions for the
crack shape. The value you enter must be a multiple of Note: The maximum number of circumferential divisions the Geometry window can display is 360. However, you can specify a higher value and the application will process it accordingly. Mesh Contours: Specifies the number of mesh contours for
the crack shape. The value must be equal to or greater than
Solution Contours: Specifies the number of mesh contours
for which you want to compute the fracture result parameters. The value must be less
than or equal to the value of the Mesh Contours property and
cannot exceed Suppressed: Toggles suppression of the Ring Crack object. The default is No. The application automatically suppresses the crack object if the scoped body becomes suppressed. | |
Buffer Zone Scale Factors |
This category includes the following properties:
These properties control the size of the buffer zone in the X, Y, and Z
directions, relative to the dimensions of the crack. For each scaling parameter, use
the slider to set a value from | |
Named Selections Creation |
Named Selections are created automatically when the fracture mesh is generated. These Named Selections are a special type of Named Selection. For more information about this category and its properties, see the Defining a Ring Crack section as well as the Special Handling of Named Selections for Crack Objects section. For information about Named Selections in general, refer to Named Selections in the Mechanical Object Reference. |
Tree Dependencies
Insertion Methods
Select the Fracture object and select the Ring Crack option from the Crack group on the Fracture Context Tab. You can also right-click the Fracture object and select the crack from the menu. Any currently inserted cracks also provide this right-click menu.
Right-click Options
In addition to common right-click options, relevant right-click options for this object include:
Insert >
Arbitrary Crack
Semi-Elliptical Crack
Elliptical Crack
Ring Crack
Corner Crack
Edge Crack
Through Crack
Cylindrical Crack
Pre-Meshed Crack
Commands
Generate All Crack Meshes
Suppress
API Reference
See the Ring Crack section of the ACT API Reference Guide for specific scripting information.