Question about how to handle rivets.

[hogpaw]

We currently have our rivets modeled with in the uncrushed state with a huck on the end and the mandrel in tact. When we place the rivet we put one in and use flexibility to remove the mandrel and set the crush depth to the desired length. We then can use the repeat command to place the rivet in the rest of the holes. This creates a problem with long regeneration times, especially if there are 1000+ rivets.

I have considered using simplified reps and that works too, except it is quite involved to put in different depths into the model. If this is done, you either cannot use the repeat command or you have to create a simplified rep in the assembly and subsitute the rivet rep. This works as well but if you want to put that assembly in a drawing or another assembly you have to use the correct rep.

These are what I have found out so far. I am open to suggestions. We are using WF 2.0.

 

[davidinindy]

I don't know what to tell you, but 1000+ of any part in an assembly will create long regen times.
I'd definately use simplified reps and have one without the rivits to work with most of the time. I see no reason to model both virgin and assembled states of the rivit.
I haven't found a way to model using any large quantity of fasteners that doesn't slow down Pro-E, or even Solidworks for that matter.
I've done some high cavitation mold designs, and gave up modeling every cavity. It wasted computing time, especially when trying to copy a change to all cavities. If it's seperate mold inserts, I model one, and leave the rest empty in the aseembly. If it's multiple parts cut into one large core/cavity isnert, I often did only one part, and used notes to instruct the machine shop on what to do about the rest (Copied 100X at X x X.XX spacing) or something.

David

 

[hogpaw]

I ended up just modeling a rivet as a part in the crushed state. I am going to have to make a no hardware rep to speed things up. Thanks for the information.

PS

 

[PeterStock]

I would use a crushed state version and make the length flexible to accommodate slight variations in grip length.

Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services

http://www.infotechpr.net

 

[ProEDesigner00]

Do not put these rivets in you assembly until just before release of the assembly and no one will be using it after that. I worked on several nacelle projects and we would put a few in for drawing purposes then just before sending to FEA we would put everything together. A lot of the FEA didn't need them in to work so that drove the decision to do so or not as well.

Norbert

http://www.gdt-llc.com

http://www.linkedin.com/profile?viewProfile=&key=23151971&trk=tab_pro