Isolate the Total Deformation Chart in a structure subjected to lifting

- July 5, 2019 at 7:11 pm
  
  mateusr
  Subscriber
  
  Dear all,
  
  I'm simulating the lifting of a structure (by 4 points at the top of the frame). The lifting point that connect the 4 wires and works as my constraint is not aligned with the CoG of the structure, hence when I analyse the Total deformation result, the software gives high values of deformation due to the movement of the structure around the lifting point.
  
  From a visual inspection, I do not have high deformation and when i plot the contours with the undeformed mesh, I can assume that the deformation is just a consequence of the movement of the structure, and not a proper problem in the structure.
  
  Can I individualize just the deformation of the structure, without considering the rotation around the support?
- July 5, 2019 at 7:18 pm
  
  Nima
  Subscriber
  
  Isn't it possible to create a new coordinate system attached to the structure and then compute the Directional Deformation results with respect to the new coordinate system?
- July 9, 2019 at 11:29 am
  
  mateusr
  Subscriber
  
  I'm not sure, but in any case the suggestion is good. If I could implement this, the problem is solved.
  
  Thank you for your suggestion.
- July 16, 2019 at 4:58 pm
  
  mateusr
  Subscriber
  
  Unfortunately, it didn't work. Even if the coordinate system is attached to the structure, when I plot the deformation it remains in the original position and didn't provide me the values that I want.
- July 16, 2019 at 5:09 pm
  
  jj77
  Subscriber
  
  You want to plot displacements relative another point (have in mind stresses are OK do not need any rel.).
  
  I have done this in other software - here is something that will help on how to do this
  
  http://www.padtinc.com/blog/wp-content/uploads/2018/04/PADT-ANSYS-Mechanical-Extracting-Relative-Displacements-20180404.pdf
  
  Also perhaps in a user defined results subtract the displacements that you want.

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