Simple Design Processing Issues and Program Crash

[Anonymous]

Hi all, I am an amateur here, slowly teaching myself how to use the program project by project.

I am having issues where the program doesn't seem to be able to handle and correctly process the design in the picture below. This is the third iteration of this design, trying different things to reduce the processing load. (It's the grill for a Landrover Defender, if anyone is interested.)

1. I created a sketch of the entire thing before extruding. As soon as I rectangular patterned the 15mm x 15mm square holes, the whole program slowed down, to the point where dimensioning one line caused it to not respond.

2. I created the sketch minus the square holes, extruded the panel, cut the first square hole then rectangular patterned the rest of the holes. This slowed the program down every time I tried to add a new feature etc. but was still workable. Then when I tried to add a decal to sketch over, the program stops responding.

3. The same as no. 2, except I only square patterned 1 quarter of the area, then mirrored twice to get the same result. Tried to place the decal and same issue, won't respond.

Anyone have any idea why I am having so much trouble with this and if there is anything I can do to mitigate it? My computer's processing and graphics card are all perfectly good for the task, and graphics drivers have been updated, though when the program crashes, it peaks the limitations of the CPU and I have to end task. It's seems to be that I've hit the limitations of the program, but it's such a simple design, and I'm completely stumped.

Device name: MSI
Processor: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz 2.80 GHz
Installed: RAM 16.0 GB (15.9 GB usable)
System type: 64-bit operating system, x64-based processor

Thanks in advance.

[jeff_strater]

as you discovered, doing the pattern in sketch is not a good idea, so your approach 2 is better.  What kind of pattern did you use?  A feature pattern?  Was the compute type set to Optimized?  That will be much more efficient than Adjust or Identical.  But, Fusion should definitely be able to handle this size of pattern.  i created a pattern of 13x33 rectangular cutouts, and it computed in about 30 seconds.  This model is attached.

I'm not sure if I understand this:  "Then when I tried to add a decal to sketch over, the program stops responding."  What decal were you applying, to what faces, and for what purpose?  Can you add some more details/screencast, model, etc?

Because this is a fairly symmetric design, I would model half of it, then mirror the body, and join the two halves together.  That would be a fairly efficient way to approach this.  In my 13x33 case above, if I take that approach, it computes in under 10 seconds.

[Anonymous]

Hello @jeff_strater ,

So i've found the issue. When creating the pattern, the compute option was set to adjust, and not optimised, so it was calculating each individual cut individually, which was maxing out my CPU. Adding the decal is just what overloaded the CPU. I ended up mirroring pattern one, and then mirroring the entire body to make the whole. Thanks so much for your reply, I have learned an new thing today.

Thanks again!