14 Replies Latest reply on Jan 19, 2015 8:44 AM by Florimond Laporte

h-adaptive with no penetration won't run

Florimond Laporte Sep 25, 2014 1:34 PM

Hello,

I ran an assembly simulation; pretty simple: two parts together with some contact areas. I tried first using global contact and h-adaptive method with success; no surprise yet. But then, I switched to no penetration contact. When I click run, nothing happens. No message, no reaction, nothing.

I thought my model could be problematic so I tried again with a simpler model, to bars overlapping. Same parameters and again bang: no reaction from the run button. If I switch back to a non adaptive method, all is working fine. If I try the p-adaptive method (I'm troubleshooting) I get the "Contact analysis is not supported by the P-method."

I really don't get what turn I missed. Is there a known incompatibility between no penetration contact and the h-adaptive method?

Re: h-adaptive with no penetration won't run

Florimond Laporte Sep 25, 2014 2:07 PM (in response to Florimond Laporte)

I am still working on solving this one.
I rebooted (just to make sure).
I started from a fresh simple model again, but without trying the global model first. So I use no penetration and h-adaptive with 5 loops. The simulation ran once and then stopped. And not because I reached the accuracy.
Then I tried something else. My initial condition was set by a flat face allowed to move. (Advanced Fixtures) I deleted this fixture and replaced it by force and it worked. So there seems to be something going wrong between the flat face fixture, the no penetration contact and the h-adaptive method.
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- Re: h-adaptive with no penetration won't run
  
  Florimond Laporte Sep 26, 2014 8:03 AM (in response to Florimond Laporte)
  
  Does anybody know something about this issue? If not, I will report it as a bug/issue to Solidwork.
  
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- Re: h-adaptive with no penetration won't run
  
  Jared Conway Sep 29, 2014 8:41 PM (in response to Florimond Laporte)
  
  sounds like the setup is simple enough, probably worth posting.
  
  assuming you are using 2014 sp4.0?
  
  if just rebooting helped the issue, i'm guessing this isn't software but i am not totally following your process either.
  
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  - Re: h-adaptive with no penetration won't run
    
    Florimond Laporte Sep 30, 2014 8:10 AM (in response to Jared Conway)
    
    Good point Jared, I use 2013 SP5.0.
    That being said, I already posted to my VAR. Let's see what they will find.
    
    About rebooting, I have an IT friend who solved a lot of bug only by rebooting. Now, when in doubt, I reboot.
    
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    - Re: h-adaptive with no penetration won't run
      
      Jared Conway Sep 30, 2014 8:21 PM (in response to Florimond Laporte)
      
      restart, reboot, restore, reinstall, reformat, retire > 6 r's of tech support\
      
      i'd recommend posting your sample file
      
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Re: h-adaptive with no penetration won't run

James Riddell Sep 26, 2014 12:39 PM (in response to Florimond Laporte)

Have you tried deleting the global contact first? My initial suspicion based on your description would be that SW is treating the two parts in contact as one, i.e. direct transfer of all forces. Since it seemed to work with a force w/o the other part it might be due to that.
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- Re: h-adaptive with no penetration won't run
  
  Florimond Laporte Sep 30, 2014 8:11 AM (in response to James Riddell)
  
  I tried that James and it does not help. Thanks anyway!
  
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Re: h-adaptive with no penetration won't run

Florimond Laporte Oct 2, 2014 1:23 PM (in response to Florimond Laporte)
Here is a simple model I used to show my case. Note that this work if I use the FFEPlus Solver, but not the Direrct Sparse.

The initial run of the analysis goes, but the second of an h-adaptive nevers starts, without saying anything about it.

BAR.zip 220.0 KB
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- Re: h-adaptive with no penetration won't run
  
  Jared Conway Oct 6, 2014 9:07 PM (in response to Florimond Laporte)
  
  could you elaborate, what is the exact workflow that needs to be followed to reproduce the issue?
  
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Re: h-adaptive with no penetration won't run

Florimond Laporte Jan 14, 2015 11:14 AM (in response to Florimond Laporte)

This problem was finally reported to Solidworks Tech Support.
In the meantime we upgraded to Solidworks 2014 which corrected this issue.

Thanks for your help!
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- Re: h-adaptive with no penetration won't run
  
  Jared Conway Jan 15, 2015 2:58 PM (in response to Florimond Laporte)
  
  sounds good. sounds like a software issue back in 2013 but that just rebooting or restarting solidworks would solve the issue.
  
  did swx tech support give you a bug id or similar?
  
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  - Re: h-adaptive with no penetration won't run
    
    Florimond Laporte Jan 16, 2015 10:29 AM (in response to Jared Conway)
    
    Yes they did: SPR 833860.
    
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    - Re: h-adaptive with no penetration won't run
      
      Jared Conway Jan 19, 2015 2:12 AM (in response to Florimond Laporte)
      
      i looked that up, has nothing to do with h-adaptive it looks like
      
      also not marked as fixedin 2014 so kind of confused what the actual solution was
      
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      - Re: h-adaptive with no penetration won't run
        
        Florimond Laporte Jan 19, 2015 8:44 AM (in response to Jared Conway)
        
        It is not solved yes. They are still looking into it.
        I should not have marked this thread as solved. My bad.
        
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