Contact between between beams that are deflecting

- January 23, 2021 at 4:17 pm
  
  MickMack
  Subscriber
  
  Hi,
  I have a model line model of a modular structure and the distance between two beams is 0.1m. I have increased the load so that the top beam and surface are deflecting more than this to initiate contact between the two beams. The image of the structure is provided below.
- January 24, 2021 at 2:40 am
  
  peteroznewman
  Subscriber
  
  nPlease show an image of the Workbench Project Archive. I want to see if you have a link from the Modal Solution cell into the Transient Structural Setup cell to create a Modal Superposition (MSUP) analysis. If you did that, then you won't have frictional contact where a gap can be open and expect contact to work when the gap closes. MSUP is a linear analysis and you can't have frictional or frictionless contact. I wouldn't ask this question if you didn't have a Modal analysis in the same model.nWhen you have only a Transient Structural analysis, then it is a Full Transient analysis and you can have frictional contact in the simulation. To get frictional contact working when there is an initial gap, you may need to edit the contact details and type in a large value of Pinball Radius to make sure the contact will be active.n
- January 24, 2021 at 3:24 pm
  
  MickMack
  Subscriber
  
  No the modal and transient analysis are not linked. I carried out the modal analysis in case i wanted to create an Integration Time Step and would require the frequency, i enclose the screenshot as you have requested for completeness.nnCould you elaborate further on how to get frictional contact working when there is an initial gap?.Thank you,nMichaeln
- January 24, 2021 at 7:25 pm
  
  peteroznewman
  Subscriber
  
  nReview the comments in this discussion.nhttps://forum.ansys.com/discussion/21894/large-deflection-on-non-linearity-vs-frictional-frictionless-support-or-contact-non-linearityn
- January 25, 2021 at 1:34 pm
  
  MickMack
  Subscriber
  
  The explanation of contact and pinball radius was excellent thank you.n

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