7 Replies Latest reply on Oct 24, 2014 1:40 PM by Jared Conway

Solidworks Simulation : Need to know the force for an imposed displacement

Antonin Raffarin Oct 19, 2014 10:31 PM

Hi all,

I am workingv on an simple project but I need your help. I enclosed a picture of my project. I have two plastic cylinders(contact with friction). I would like to know the force I need(2 pointers) in order to my orange cylinder does a displacement of 5 cm long. I fixed my blue cylinder and imposed the displacement to the orange cylinder. The simulation looks working(Large displacement) but how I can know the force?

Moreover I take advantage of that to ask you another question. Usually when I do a FEA analysis with other softwares I check if my results don't depend on my mesh. But apparently here Solidworks does it by itself, right?

Thanks !

Image1.jpg 22.5 KB

Re: Solidworks Simulation : Need to know the force for an imposed displacement

Jared Conway Oct 20, 2014 1:51 AM (in response to Antonin Raffarin)

output force with the reaction force tool

and no, solidworks doesn't automatically check for convergence. there is adaptive meshing that helps but is not automatic.

im also not sure if this analysis is a good fit for fea since the components are just moving, not deforming
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- Re: Solidworks Simulation : Need to know the force for an imposed displacement
  
  Antonin Raffarin Oct 20, 2014 1:54 AM (in response to Jared Conway)
  
  Thanks a lot for answering Jared ! I think you re right, I don't want to check the deformation. Maybe Solidworks Motion would be enough?
  
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  - Re: Solidworks Simulation : Need to know the force for an imposed displacement
    
    Greg Fowler Oct 21, 2014 5:40 PM (in response to Antonin Raffarin)
    
    I don't think you can use both the "Large Displacement" solver mode + the calculation of reaction/free-body forces. It's either one or the other. Motion might be your bet but I've never touched it and not sure how it's gonna handle the friction force...
    
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    - Re: Solidworks Simulation : Need to know the force for an imposed displacement
      
      Shaun Densberger Oct 21, 2014 6:47 PM (in response to Greg Fowler)
      
      "I don't think you can use both the "Large Displacement" solver mode + the calculation of reaction/free-body forces. It's either one or the other."
      
      I don't think it should be an issue; the only thing that might change is the direction and magnitude as a function of the load factor.
      
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      - Re: Solidworks Simulation : Need to know the force for an imposed displacement
        
        Sean Screws Oct 23, 2014 2:08 PM (in response to Shaun Densberger)
        
        Large Displacement + Reaction forces OKAY
        Large Displacement + Free Body Forces, One or the other.
        
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  - Re: Solidworks Simulation : Need to know the force for an imposed displacement
    
    Jared Conway Oct 24, 2014 1:40 PM (in response to Antonin Raffarin)
    
    very likely.
    
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Re: Solidworks Simulation : Need to know the force for an imposed displacement

Shaun Densberger Oct 21, 2014 6:53 PM (in response to Antonin Raffarin)

" I have two plastic cylinders(contact with friction). I would like to know the force I need(2 pointers) in order to my orange cylinder does a displacement of 5 cm long."

So the orange cylinder slides along the blue one and you want to know the frictional force needed to cause motion? If so, then this seems like a fairly straight forward hand calc that should take like 5 minutes (unless you expect the cylinder to deform significantly and change the contact pressure).
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