constraints in assemblies

[Pietro_1]

provided that I am using the top-down technique, I managed to create my first two sheet metal parts, folded and to desired size.

Now I have to couple these two pieces of sheet metal (and also others that I will have to do) to the desired quotas and then, when the complete model will have to drill them to keep them from screws.

to place between them the faces of the two sheet metals I used the bonds of assemblies, which in last I will have to eliminate them all, since the real constraints are the screws that connect and maintain the two plates together.

later:

1) to properly bind must I just insert the screws into the holes?

or:

2) Do I have to bind the inner face of adjacent holes more by inserting the screws?

3) the way I positioned the parts, using “fictities” and subsequent removal, in this case, is the correct way to proceed?

Of course, everything, also looking at a possible and subsequent dynamic analysis and fea.

 

[diegus]

I think you have a clear idea!
1) screws by themselves are not constraint.
2) binding the inner face of the screws seems to me crazy.
3) the right method is to place the objects with all the necessary constraints (which should not be removed) then add the screws that are only, so to speak, cosmetics that do not really fulfill the task they have in reality.

working according to method 3 does not involve problems for the fea.

 

[Pietro_1]

Trying and trying again, I understand what you mean. Thank you.