Getting started > Understanding the Simulation, FEM, and idealized part file structure > Modifying FEM and Simulation files > Replace Ideal/Master Part overview
Replace the idealized or master part file
With the FEM file displayed, right-click the FEM node in the Simulation Navigator and choose Replace Ideal/Master Part.
Select an open master part or idealized part file from the list, or click Open to browse for a file.
If you select a master part file, select the Create Idealized Part check box to create a new idealized part. If you are running in Teamcenter Integration using the Teamcenter for Simulation data model, enter a number, revision, and name for the new idealized part item revision.
If you are creating a new idealized part and your part contains multiple solid or sheet bodies, specify the bodies to include in the FEM. From the Bodies to Use list:Choose All Visible (the default) to automatically include all solid or sheet bodies currently displayed in the idealized part and FEM.Choose All to automatically include all solid or sheet bodies, including hidden bodies, in the idealized part and FEM.Note: Because lightweight facet bodies contain no polygon edge or face data, you cannot create a FEM on lightweight facet representations in assembly reference sets. If you create a new FEM with the All option selected, the software skips any lightweight facet bodies in the assembly part. Choose Select to include only selected bodies in the idealized part and FEM. When you click Select Bodies, the Type Filter and Selection Scope become active in the Top Border bar, and you can select solid or sheet bodies in the graphics window. Facet bodies are not selectable.Choose None to create an idealized part that contains no bodies from the master part.
(Optional) To include CAD reference geometry, such as points, curves, or coordinate systems, click Geometry Options and select the geometry to include.
Choose the solver package you want to use.
Click OK.
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Replace the idealized or master part file, Simcenter 3D 2021.1 Series
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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/id624461 · retrieved 2026-07-17