Substructure Definition

Defines the characteristics (stiffness, mass, damping) of the matrices generated during the process of creating the superelement during a Substructure Generation analysis. By default, all bodies of your model are scoped to this object.

Requirement: Only Named Selections and Remote Point objects can be selected as interfaces.

Note: The application treats added masses (from Point Masses and Distributed Masses) as internal to the superelement.

Tip: You can drag-and-drop any Named Selection or Remote Point onto this object for automatic scoping.

Additional Related Information

Object Properties

The Details Pane properties for this object include the following.

Category	Properties/Options/Descriptions
Geometry	Geometry: Read-only property that displays the number of bodies of the model.
Definition	Physics Type: Read-only property indicating the physics type (Structural). Matrix Reduction Method: Read-only property indicating the Component Mode Synthesis (CMS) method - the only available method. Interface Method: Options include Fixed (default) or Free. Lumped Mass Formulation: Specify the desired lumped mass matrix formulation. Options include Program Controlled (default), Off, and On. The Off setting uses the element-dependent default mass matrix formulation and the On setting uses a lumped mass approximation. Generate Damping Matrix: Specify whether to generate a damping matrix. Options include Program Controlled (default), Yes, and No.
Interfaces	Number of Interfaces: Read-only display of the number of interface entries detected by the application. Number of Master Nodes: Read-only display of the number of superelement master nodes resulting from interfaces.

Tree Dependencies

Valid Parent Tree Object: Substructure Definition.
Valid Child Tree Objects: Commands, Comment, Figure, and Image.

Insertion Methods

This object is automatically included in the analysis system.

Right-click Options

In addition to common right-click options, relevant right-click options for this object include:

Insert > Commands

API Reference

See the Substructure Generation Condensed Part section of the ACT API Reference Guide for specific scripting information.

Additional Related Information

See the following sections for more information: