I have a question about implementing push-out testing in ANSYS mechanical.

- January 17, 2024 at 9:54 am
  
  JooJaehoon
  Subscriber
  
  For the purpose of implementing a push-out test, I would like to first generate displacement by applying clamping pressure from above, and then proceed with the analysis by applying different conditions while fixing the displacement.
  Can you tell me the specific method?
- January 17, 2024 at 10:41 am
  
  peteroznewman
  Subscriber
  
  Applying a pressure to that face will result in a non-uniform displacement. The edges will deform more than the center. Is that what you want or do you want the face to remain planar while it deforms?
  If you can accept the condition that the top face remains planar when the clamping load is applied, then it is simple to hold the clamping load fixed while some forces are applied in step 2. Under Analysis Settings, change the number of steps to 2. For the displacement applied to the top face, in the Tabular Input type a small number (Di) for step 1 and leave the same number there for step 2. In the Force load, type a 0 for step 1 and type a non-zero number for step 2.
  After the model solves, probe the Reaction force for the displacement (Di) for step 1. Divide the reaction force by the area of the top face. That is the average pressure for the initial displacement (Pi). To hit a target pressure value (Pt) use the target displacement value (Dt) calculated by the ratio Dt = Di*Pt/Pi
  - January 18, 2024 at 12:32 am
    
    JooJaehoon
    Subscriber
    
    Sorry, I guess I didn't go into detail about the conditions in my model.
    I am conducting a computerized analysis to observe whether physical separation occurs in parts under operating pressure when operating pressure is applied to a model that has undergone pre-changed due to clamping pressure
    Upper and lower rigid was assumed to generate only displacement without deformation.
    When operating pressure is applied to a upper rigid, deformation occurs to species in the lateral direction due to the Poisson effect, which does not match my assumption.
    I would appreciate it if you could tell me how to proceed with additional analysis while fixing the rigid displacement caused by fastening pressure