In Ansys user defined result, UX, UY, UZ questions

- April 8, 2024 at 12:36 am
  
  Bob
  Subscriber
  
  Hello!
  I am conducting an experiment in which two objects collide through explicit dynamics.
  At this time, in order to export the global positions of all nodes of object 1 as a result, I set UX, UY, and UZ as expressions in the user defined result.
  UX and UY confirmed that location information was exported well for every node as shown in the picture below.
  
  However, in UZ, the values of all nodes are output as the same value, as shown in the result and plot below.
  
  Can you give me some advice on why?
- April 8, 2024 at 4:57 pm
  
  mjmiddle
  Ansys Employee
  
  UX, UY, UZ are deformation, not location. It looks like all nodes are moving consistently (rigidly) in the Z direction, and deformation is only in X and Y directions. Are these rigid body impacts? Maybe the different X and Y deformations are due to rigid rotation of the bodies (around Z)?
  LOCZ would be the undeformed coordinates and LOC_DEFZ would be the deformed locations.
  Can you give more explanation on how this model is behaving and supposed to behave?