Unrealistic deformation in a linear static analysis

- July 5, 2019 at 5:57 am
  
  Oimpa
  Subscriber
  
  Hi,
  
  I have a model that includes two parts solid and shell.
  
  I've joined these two parts with merge nodes.
  
  I want to do a linear static analysis on them.
  
  After analysis, deformations are very small(0.3e-7).But in some places in the model, these two parts go inside or go apart.
  
  While this does not happen, if I do a non-linear analysis on the same model with the same characteristics.
  
  Is this a real deformation?
- July 6, 2019 at 3:11 am
  
  peteroznewman
  Subscriber
  
  No, it's not a real deformation, it is just the deformation display scale that is set to a number much larger than 1. When you run a non-linear analysis, the deformation display scale is set to 1.0. I am a Mechanical Workbench user, so I don't know the APDL menu or command to change the display scale.
- July 6, 2019 at 8:43 am
  
  Oimpa
  Subscriber
  
  Thanks
- July 6, 2019 at 9:28 am
  
  jj77
  Subscriber
  
  Yes, when nlgeom, on is active so large displacement is on then deformation scale is 1. /dscale, all, 1 command can set that.
  
  We are all using apdl, just different pre and post processors (ansys classic gui or wb gui).

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