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Can we run multiple simulations in a row?

Member, Mentor Posts: 2,309 ✭✭✭✭✭
in Simulation
I'm using FEA iteratively to compare various scenarios and part geometry. Is there a way to create a queue of simulations using different loads and different part configurations, then run them all while I'm away at lunch or asleep?
Evan Reese
Independent Onshape Consultant | Industrial Designer
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Answers

  • Member Posts: 3,256 PRO
    Just a guess, but do multiple browser windows work?
  • Member, Mentor Posts: 2,309 ✭✭✭✭✭
    S1mon said:
    Just a guess, but do multiple browser windows work?
    I was wondering that. I'll give it a test.
    Evan Reese
    Independent Onshape Consultant | Industrial Designer
  • Member, csevp Posts: 694 PRO
    I tend to duplicate the assembly once I have the loads set up - then swap in the changed parts (replace, select different configurations, set different load or constraint conditions, etc). 
    This way, I can run the simulations in each assembly concurrently without problem. I don't think you'll be able to run different simulations on the same assembly in different browsers unless you separate them with branches or something. (Kind of like how the position of the rollback bar is cannot be different in different windows (or for different users) if you are viewing the same Part Studio in the same workspace).

    I just checked by adding a new load in another instance of an Assembly - and it (predictably) updates the first Assembly and restarts the Simulation.
    Another reason to have discrete assemblies for each analysis is that it takes so long to rerun if you wanted to A/B an assembly - that it's better to have  a unique simulation in each Assembly tab. If you don't change anything - the simulations (might) run a bit faster when you want to come back and take some screenshots or compare results.
  • Member, Mentor Posts: 2,309 ✭✭✭✭✭
    Thanks, Romeo. I will consider that. I also want to experiment with just versioning each time I get a setup that I like. That way I can name each version something meaningful, and can always branch later to iterate on one. To make that repeatable, I probably need to un-configure the assembly and just hard code changes to the variables.
    Evan Reese
    Independent Onshape Consultant | Industrial Designer
  • Member Posts: 2,104 PRO
    One trick I've been using to avoid "re-starts" when running simulation(s) in different windows is to just run the simulation on the last microversion instead of the "workspace", this way I can keep going and/or prepare the next "run" without messing up the on-going one.
  • Member, Mentor Posts: 2,309 ✭✭✭✭✭
    great tip, Eric
    Evan Reese
    Independent Onshape Consultant | Industrial Designer
  • Member, csevp Posts: 694 PRO
    eric_pesty said:
    One trick I've been using to avoid "re-starts" when running simulation(s) in different windows is to just run the simulation on the last microversion instead of the "workspace", this way I can keep going and/or prepare the next "run" without messing up the on-going one.
    Wow - this is an interesting tip - and it works!
  • Member, Mentor Posts: 2,309 ✭✭✭✭✭
    it does, though they don't seem to keep running if you leave the tab too long, so overnight still probably isn't going to happen.
    Evan Reese
    Independent Onshape Consultant | Industrial Designer
  • Member Posts: 3,256 PRO
    Hmmm. Is it time for one of those hacks where you make your mouse move periodically?


  • Member, csevp Posts: 598 PRO
     I did one the other night. Didn't have it running all night just around an hour. 
     I use a Mac so I set up Automator to press the J key and put that on a 5-minute loop. Seemed to work fine but I think I would have to set that up each time because when I closed everything down and restarted my computer it it seemed to have lost some connection to the browser. 
  • Member Posts: 724 PRO
    edited February 2024
    There is a little app out there to do that for you: https://wiggler.systems (This one is for windows, but there are similar ones for other OSes.)


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