Working with subassembly FEMs

A subassembly FEM is an assembly FEM that serves as a component FEM in another assembly FEM. Subassembly FEMs can be either associative (mapped to a CAD subassembly) or non-associative.

Associative subassembly FEMs

A CAD subassembly can have three different states with regard to associative FEM mapping:

• Ignored—The CAD subassembly is currently unmapped; however, you can map a new or existing component or subassembly FEM to this subassembly.

• Not Mapped—You cannot map to a CAD subassembly when its status is Not Mapped. However, you can map component FEMs to the CAD components in this subassembly.

• Mapped—A component or subassembly FEM is currently mapped to this CAD subassembly.

When you first create an associative assembly FEM, subassemblies in the CAD assembly have the status Ignored. When a CAD subassembly has the status Ignored, you can map the CAD subassembly to an existing assembly FEM or map the CAD subassembly to a new assembly FEM to define a subassembly FEM. (Alternatively, you can map a single, multi-body FEM to the CAD subassembly.)

The following figure shows the result of mapping an assembly FEM to a CAD subassembly.

Before mapping a subassembly	After mapping a subassembly to a subassembly FEM
Assembly FEM	Assembly FEM
Loaded CAD assembly	Loaded CAD assembly
Ignored CAD component part (Ignored)	Ignored CAD component part (Ignored)
Ignored CAD component part (Ignored)	Ignored CAD component part (Ignored)
CAD subassembly (Ignored)	Mapped CAD subassembly (Mapped)
Subassembly component (no status)	Subassembly component (no status)
Subassembly component (no status)	Subassembly component (no status)
	Subassembly FEM

To edit the subassembly FEM (map, add, or remove component FEMs, and so on), right-click the subassembly FEM node in the Simulation Navigator and choose Make Work Part. Remember to resolve label conflicts in the subassembly FEM following any editing.

When the CAD subassembly has a status of Ignored, the individual CAD components in the subassembly have no defined status, and you cannot map a component FEM directly to a subassembly CAD component.

To map a component FEM directly to a subassembly CAD component (without associating the FEM with the entire subassembly), in the Simulation Navigator, right-click the CAD subassembly and choose Map at Next Level. The status of the CAD subassembly changes to Not Mapped, and the status of the subassembly components is Ignored.

Note:

You can also use the Map Sub Assemblies at Next Level command to perform the same function on the top-level CAD assembly. This command changes the status of all CAD subassemblies to Not Mapped and the status of all CAD components to Ignored.

Before using Map at Next Level	After using Map at Next Level
Assembly FEM	Assembly FEM
Loaded CAD assembly	Loaded CAD assembly
CAD component part (Ignored)	CAD component part (Ignored)
CAD component part (Ignored)	CAD component part (Ignored)
CAD subassembly (Ignored	CAD subassembly (Not Mapped)
Subassembly component (no status)	Subassembly component (Ignored)
Subassembly component (no status)	Subassembly component (Ignored)

You can now map component FEMs to subassembly CAD components, as shown below.

Assembly FEM
Loaded CAD assembly
CAD component part (Ignored)
CAD component part (Ignored)
CAD subassembly (Not Mapped)
Subassembly component (Mapped)
Subassembly component (Mapped)
A component FEM.
A component FEM.

Non-associative subassembly FEMs

You can use subassembly FEMs to organize and manage FE model data in non-associative assembly FEMs. You can add an existing assembly FEM to a non-associative assembly FEM to define a subassembly FEM. Or you can add a new subassembly FEM to an assembly FEM.

The following figure shows a non-associative assembly FEM containing two component FEMs and a subassembly FEM.

Assembly FEM
Component FEM
Component FEM
Subassembly FEM

How do I

Resolve label conflicts in your assembly FEM files

Learn more

Assembly FEMs

Associative versus non-associative assembly FEMs

Managing large assembly FEMs using the Simulation Navigator and Simulation File View

Assembly FEM updates

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

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Working with subassembly FEMs, Simcenter 3D 2021.1 Series

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