15 Replies Latest reply on Nov 8, 2016 7:27 AM by Gian Flavio Violi

what is wrong in this simiulation?

Adel Taheri Aval Nov 2, 2016 3:37 AM

Can anyone help me ?

Maybe i have mistake in B/C and contact.

Tanks Adel

rak2.rar 948.0 KB

Re: what is wrong in this simiulation?

Siavash Khajehhasani Nov 2, 2016 4:00 PM (in response to Adel Taheri Aval)

Your model is nor properly constraint. It flies into the space
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- Re: what is wrong in this simiulation?
  
  Adel Taheri Aval Nov 5, 2016 2:16 AM (in response to Siavash Khajehhasani)
  
  Tanks dear friend
  Could you please solve this simulation and attach files. I dont know how to setup the contact set and boundary condition . I explain more about my project .
  I made a stand (for convening N2 bottle ) by sheetmetal and bolted the parts .Now i want to calculate the strength of structure . I attach a video .
  Tank very much
  
  video0012.3gp 3.4 MB
  
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Re: what is wrong in this simiulation?

Adel Taheri Aval Nov 6, 2016 12:59 AM (in response to Adel Taheri Aval)

Any one?
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- Re: what is wrong in this simiulation?
  
  Gian Flavio Violi Nov 6, 2016 11:31 AM (in response to Adel Taheri Aval)
  
  Hello Adel,
  
  The problem with your model was basically contacts. The bolt connectors you defined were lost in translation between you and SW, so to speak. You were telling solidworks "this bolt starts here and ends here" but you didn't tell him "it constrains all this set of faces in between". I just used more connections stating where it started and ended in different parts. Take a look.
  
  Also, if you are using an iterative solver it would fail. Use a Direct solver for this kind of simulation. I'm uploading my modified file to my dropbox. I'll post the link after its done, but it may take a while with my 3rd world country internet that keeps going H-wire.
  
  Regrads, GF
  
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  - Re: what is wrong in this simiulation?
    
    Gian Flavio Violi Nov 6, 2016 11:42 AM (in response to Gian Flavio Violi)
    
    Hello Adel,
    
    Dropbox - Simulation2.rar
    
    Here you've got the dropbox link, as promised.
    
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    - Re: what is wrong in this simiulation?
      
      Adel Taheri Aval Nov 7, 2016 12:06 AM (in response to Gian Flavio Violi)
      
      Tanks very much
      Unfortunately i use SW2016 . Could you please attach a 2016 version of solutions .
      
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      - Re: what is wrong in this simiulation?
        
        Gian Flavio Violi Nov 7, 2016 7:29 AM (in response to Adel Taheri Aval)
        
        Hello Adel,
        
        I kinda have a busy day. can't you follow my steps yourself? I might be able to upload the solution tonight by 8pm EST, if you are in a hurry I suggest doing it yourself.
        
        Regards,
        GF
        
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        Re: what is wrong in this simiulation?
        
        Adel Taheri Aval Nov 7, 2016 7:37 AM (in response to Gian Flavio Violi)
        
        Thanks GIan
        Im not in hurry . I will wait for your response .
        Have good day friend.
        Adel
        
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        Re: what is wrong in this simiulation?
        
        Gian Flavio Violi Nov 7, 2016 7:41 AM (in response to Adel Taheri Aval)
        
        Ok. No problem. If I catch a break at work, I'll try to do it sooner. I'll post the link and mention you so you get an e-mail notificacion.
        Regards,
        GF
        
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        Re: what is wrong in this simiulation?
        
        Gian Flavio Violi Nov 7, 2016 8:08 AM (in response to Gian Flavio Violi)
        
        Adel.
        
        Just hitted "Run"... it send you a link soon.
        
        Regards,
        GF
        
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        Re: what is wrong in this simiulation?
        
        Gian Flavio Violi Nov 7, 2016 8:31 AM (in response to Gian Flavio Violi)
        
        There you go Adel,
        
        https://www.dropbox.com/s/l5qxv47jls8ltfq/Adel.rar?dl=0
        
        Regards,
        GF
        
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        Re: what is wrong in this simiulation?
        
        Adel Taheri Aval Nov 7, 2016 8:55 AM (in response to Gian Flavio Violi)
        
        Tanks Gian
        I download that . Is it possible for you to follow this dissociation . I have another questions and i ask you tomorrow .
        Tanks a lot
        Adel
        
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        Re: what is wrong in this simiulation?
        
        Gian Flavio Violi Nov 7, 2016 8:56 AM (in response to Adel Taheri Aval)
        
        Just PM me, I don't feel like keep flodding everyones e-mail with many responses to the thread.
        
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        Re: what is wrong in this simiulation?
        
        Adel Taheri Aval Nov 8, 2016 1:10 AM (in response to Gian Flavio Violi)
        
        Hi
        I ran the simulation and see this warning . Is it a major or not? I think it is not common to bolt a sheet matal stand .
        
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        Re: what is wrong in this simiulation?
        
        Gian Flavio Violi Nov 8, 2016 7:27 AM (in response to Adel Taheri Aval)
        
        You could change some bolts with pins, as you are not studing the effects of pre-loads in the simulation. The bodies forces are gonna load up just fine, just don;t rely on SW for the forces on the bolts.
        
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