Defining imperfections

You can specify the following types of imperfections:

File imperfection

You can define a file imperfection that uses results files from a previous analysis on an assembly. For more information, see Introducing a Geometric Imperfection into a Model.

Input imperfection

You can define an input imperfection that uses imperfection data specified in an alternate input file on an assembly. For more information, see Introducing a Geometric Imperfection into a Model.

Data imperfection

You can define a data imperfection that uses data lines in the input file specifying components of imperfection for a given node on an assembly. For more information, see Introducing a Geometric Imperfection into a Model.

Select Special Imperfection Create : type from the Interaction module to define imperfection. Select Edit from the same menu to make changes to an existing definition.

Imperfection definitions appear in the Model Tree in the Engineering Features container under the assembly.

When you define a file imperfection, you can select objects from the viewport to identify the region on which to apply the imperfection. By default, a node set is created that contains the selected objects. You can change this behavior by toggling off the option to create a set or surface in the prompt area. A default name is provided in the prompt area, but you can enter a new name.

For detailed instructions on creating this type of engineering feature, see the following sections:

• Defining file imperfections
• Defining input imperfections
• Defining data imperfections