Insert and Constrain Slow

[Crstiano]

Hi,
Come to the group to ask a question that creeps for years, long time and continues to lose precious time.

In Large assemblies (in this case mid, 10k occurrences), I take a long time to insert items and then restrict them, either, bolts, nuts, washers ... even with the new "Express Mode" feature (INV2014), the using insertion and (1) restriction of only one item, it may take some 1 minute or more.

Become an arduous and tiring work because the User loses 6 seconds to select the items and 1 minute waiting the process of the Inventor ...

This should no longer be simpler today? 

Inventor 2014+SP2

Windows 7 - 64x

Workstation DELL T5610 - Xeon E5-2637v2 - 3.5GHz

32GB - 1833MHz - DDR3

NvidiaQuadro K2000

Don't have Antivirus !

[bob_holland]

Cristiano,

Please check your IPJ(s) and make sure that the locations that you have specified are not RED.

The red indicates that this location that you are specifying to look in is not found.

This is particularly important for materials, appearances and design data.

Please check this and let us know.

[Crstiano]

Hi Bob,
Thanks for your help.
My IPJ dont have locations in RED.

[Curtis_Waguespack]

Hi Crstiano,

I run into this most often when someone has a few parts in the assembly that have adaptive sketches in them. These are are generally features that were created by projecting geometry in from other parts. Often it is just a few problem features in a few parts that are causing the long calculation times, but it can be a challenge to find out which parts are causing the issue, and them and turn off the adaptivity in them.

So that is something I would look for in your assembly.

I hope this helps.
Best of luck to you in all of your Inventor pursuits,
Curtis
http://inventortrenches.blogspot.com

[Crstiano]

Hi Curtis,
Thanks for your help.
But my assembly dont have adaptive sketches.
And other possible things to consider problem like:
- contact set
- adaptive
- errors of the constrainss
- unresolved files
- complexes models
-

[WHolzwarth]

How many entries are in top-level area of your browser, Cristiano?

[Crstiano]

Around 1000 restrictions...

[mrattray]

That's a lot of constraints, in my opinion. I would see if you can break your assembly down into manageable, logical sub assemblies. The demote tool would be very useful here. I don't like to ever have more than a couple dozen unique parts in an assembly, preferably less.
Another option is to explore skeletal and multi-body modeling techniques. With these techniques manually constraining parts can be eliminated entirely.
You are aware of the defer updates option? This could help you in the more immediate future with the long selection times and such, but you'll have to manually update to see the results of added constraints.

[Crstiano]

Hi Mike,
I understand your opinion, but in this case as others, the pieces are already enrolled in an ERP system, and engineering in many cases is only assemble such items. Then use techniques like multi-body or skeleton, are not viable because it would lose all information contained in existing sub-assemblies, and recreates them for hours.

In this case, today is a simple structure, and I'm not using Frame Generator. 

But I have the same problem in other products such as Conveyors, Storage... all kinds of products which use many fasteners.

This picture of my screen (notebook) for some testing... see only 130 open files in this session.

[mercerc]

Your comment on Fastener leads me to ask this question.

Are your Fastener your own or from the Content Center within Inventor?

If the Fasteners are of your own are they iParts?

[mcgyvr]

Personally I find it fairly "normal" for Inventor to slow down (sometimes drastically) with "mid to large assemblies" when constraining.. 

Heck throw a few harness assemblies into a small"ish" assembly and it can get slow.

Inventor is NOT a "high performance" CAD program. Its sufficient for most but its far from a speed demon with larger/more complicated assemblies. 

There is a reason they need to have "level of details" and "memory saving mode",etc.. 

There is a reason most suggest against or warn of adaptive parts. 

[johnsonshiue]

Hi! The behavior does not sound normal to me. Some thing is not working right. Could you try the followings and see if it makes a difference?

1) Delete all design views.

2) Suppress all components and unsuppress two.

If neither of them changes the behavior, please send me an email (johnson.shiue@autodesk.com) and I will set up a secure account for you to upload the files.

Thanks!

[Crstiano]

Hi Johnson,
I have not had success.

I'm send an email for upload files.