Replacing a component FEM with a superelement

To replace a component FEM with its superelement representation, you edit the FE Model Component Representation of the component FEM in the context of the assembly FEM. In the Simulation Navigator, the component icon is bracketed ([ ]) to indicate that it is represented by a superelement.

A simple system model in the Simulation Navigator. (1) A component represented by the base FEM. (2) A component represented by a superelement.

In the graphics window, the boundary DOF nodes are displayed as unattached markers. You can also display the superelement as either a transparent, lightweight, non-selectable approximation of the base FEM, or a generic superelement symbol.

When you replace the base FEM representation with the superelement representation, the superelement ID (SEID) is displayed in the FE Model Component Representation dialog box. You may want to refer to the listed superelement ID when post-processing superelement results or troubleshooting the listing file.

Where do I find it?

To represent a component FEM with a superelement:

Application	Pre/Post
Prerequisite	Simcenter Nastran or Simcenter SamcefAn assembly FEM of the system being modeled.Static or modal reductions (_0.op2 files) of components to be modeled as superelements for Simcenter Nastran.Static or modal reductions (.sdb & *.u18 files) of components to be modeled as superelements for Simcenter Samcef.
Simulation Navigator	Component FEM or subassembly FEM node → right-click → Edit Representation.
Location in dialog box	FE Model Component Representation dialog box → Representation → Super Element (for Simcenter Nastran).FE Model Component Representation dialog box → Representation → Samcef Superelement (for Samcef).

How do I

Replace Base FEM components with superelements

Load and display superelement results

Update a system model

Learn more

Superelement analysis

Using superelements in an assembly FEM

System modeling workflow

Generating external superelements for Pre/Post system models

Superelement mapping considerations

Connecting superelement boundary nodes to the residual

Superelement displays

Controlling the display of base FEM approximations

Solving the system model

Example: Assigning external superelements in the bulk data file

Example: Defining superelement connections and orientation

Post-processing system models

Creating a Simcenter Samcef superelement for Pre/Post system models

Supported system model solutions for Simcenter Samcef superelements

Look up more details

Supported system model solutions

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

Replacing a component FEM with a superelement, Simcenter 3D 2021.1 Series

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