Object Properties

Tree Dependencies

Insertion Methods

Right-click Options

API Reference

Additional Related Information

Scope

Source: Read-only property set to Arbitrary 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 Apply.

Definition

Crack ID: A read-only property that displays a unique system generated identification number ID for the crack object. The application uses this identifier when creating solution identifiers for fracture parameters.

Coordinate System: Specifies the user-defined coordinate system that defines the orientation of the crack. For this user-defined coordinate system, the Y axis must be directed towards the normal of the crack's top face and the X axis helps to determine the crack extension direction.

Crack Shape: Read-only property set to Arbitrary.

Crack Surface: Scopes the surface body to be used as the crack surface. It can be scoped to a single surface body only.

Mesh Method: Read-only property set to Tetrahedrons.

Largest Contour Radius: Specifies the largest contour radius for the crack shape. Enter a value greater than 0.

Growth Rate: Specifies the factor with which the mesh layers will grow along the radius of the crack. Specify a value greater than 1. The default value is 1.2. The recommended value is equal to or greater than 1.1.

Front Element Size: Specifies the element size for the crack front. The default value is computed from Largest Contour Radius property and the Growth Rate property. A value of 0 specifies the default. You can specify an entry greater than 0.

Mesh Contours: Specifies the number of mesh contours for the crack shape. The value must be equal to or greater than 1. The default value is 6. The Geometry window can display only a maximum of 100 mesh contours, but you can specify a higher value and fracture meshing will respect it.

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 99. By default, the value equals the Match Mesh Contours property. This indicates the number of Solution Contours is equal to the number of Mesh Contours. Entering 0 resets the value to equal the Match Mesh Contours value.

Suppressed: Toggles suppression of the Arbitrary Crack object. The default is No. The Arbitrary Crack object is suppressed automatically if both the scoped body and scoped crack surface are suppressed.

Buffer Zone Scale Factors

The Buffer Zone Scale Factors category controls the size of the buffer zone in the X, Y, and Z directions, relative to the crack surface geometry dimensions. For each scaling parameter, use the slider to set a value from 2 to 50. The default value is 2. The maximum dimension among the three dimensions of the crack surface geometry is multiplied by the corresponding scale factors to create a buffer zone:

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 details, refer to the Fracture Analysis and the Special Handling of Named Selections for Crack Objects sections for more information. For information about Named Selections in general, refer to Named Selections in the Mechanical Object Reference.