What's the difference of Multi-body strategy between Catia, Creo, NX and SW?

[John_Lyu]

PTC provided multi-body concepts from Creo Parametric 7.0 and it looks more like Catia's multi-body strategy than SW or NX, but other behaviours looks like SW/NX such as operating boolean or fillet, chamfer, e.g.

1. Catia: 

   1.1. All features not only boolean operatings can only be applied on actived part-body;

   1.2. Part-body needs to be created before any features founded in Catia, more than 1 splitting solid can be contained in each part-body.

2. SW & NX: 

   2.1. Creat boolean operatings and then choose which body we wanna apply, other features can be directely applied on the body without active(None active concept to be exact) ;

   2.2. Automatically creat 1 body per splitting solid that we can't choose how many splitting solids 1 body can hold.

3. Creo: 

   3.1. Creat boolean operatings and then choose which body we wanna apply, other features can be directely applied on the body without active(None active concept to be exact) ;

   3.2. Part-body can be created before or after any features founded, more than 1 splitting solid can be contained in each part-body.

I am considering why they chose such completely different strategy especially for QTY. of splitting solids in a part-body. Is there any congenital limitations for those 4 applications make this difference?

THX,

John

[Michael · Accepted solution]

Creo, especially from version 7.0 onwards implemented a hybrid approach that borrows from both Catia and SW/NX philosophies:

Flexible body creation in Creo allows more than one splitting solid in a part-body, similar to Catia. You can create bodies before or after features, giving the user control over the structure. You can also export bodies as parts with automatic reference update control. 

[John_Lyu]

Got it, Creo implemented multi-body approach late so it absorbed others successful experience, that explains my cofusion.

Thank you very much Micheal

John

[John_Lyu]

3.1. Creat boolean operatings and then choose which body we wanna apply, other features can be directely applied on the body without active(None active concept to be exact) - Part body in Creo can be actived, Red description is not corect, ignore it ^_^;