Creo Simulate > Reference Links > Assembly Modeling Entities, Idealizations, and Connections
Assembly Modeling Entities, Idealizations, and Connections
If you have created modeling entities and idealizations in part mode, Creo Simulate disregards them in assembly mode. You must define them in assembly mode if you want to use them in this mode.
The following is a list of the modeling entities, idealizations, and connections that are ignored in assembly mode:
Modeling Entities
Idealizations and Connections
materials applied to geometry
spot welds
constraints in native mode
contacts
loads in native mode
measures
* 
In FEM mode, Creo Simulate respects part-level loads and constraints at the assembly level.
For example, if you are working in native mode and you model the individual parts of your assembly in part mode, the software ignores the loads you assigned to each part after you access Creo Simulate from assembly mode. When you access Creo Simulate from assembly mode, you can then define loads relevant to the assembly as a whole.
In any case, modeling entities that you assign while working from assembly mode have no bearing on modeling entities you assign while working from part mode, and the reverse.
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