Getting started > Understanding the Simulation, FEM, and idealized part file structure
Assembly FEM file
The assembly FEM (.afm) file:
Is an assembly.
Contains multiple component FEM files.
Contains connector elements.
Is the master model for a Simulation file.
May be associative or non-associative.
When associative, contains a pointer to a CAD assembly.
When associative, maps component FEMs to CAD components.
An assembly FEM file in the Simulation Navigator.
An assembly FEM file in the Assembly Navigator. Note that the FEM files are standard components.
Assembly Load Options and assembly FEMs
Like all CAE files, assembly FEM files honor your current Assembly Load Options settings, including the loading of associated CAD assemblies and CAD components. However, for large, associative assembly FEMs with multiple parent and dependent Simulation files, as well as associative CAD geometry, the Load From Folder option becomes increasingly untenable in a production environment.
In native mode, Siemens Digital Industries Software recommends that you use the Load From Search Folders option. For more information about configuring your network to use Load From Search Folders, see Load part versions. For more information about how Assembly Load Options affect CAE model data, see Using Assembly Load Options for CAE model data.
Teamcenter Integration with Teamcenter for Simulation includes many features for managing large CAE structures such as assembly FEMs.
Learn more
CAE model files
Simulation file
FEM file
Associative and non-associative FEM files
Idealized part file
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Assembly FEM file, Simcenter 3D 2021.1 Series
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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/id975950 · retrieved 2026-07-17