Dynamic Explicit Analysis (Quasi-Static Compression)

- January 28, 2023 at 11:45 pm
  
  ali.afrouzian
  Subscriber
  
  In displacement control quasi-static test using dynamic explicit, I put end_time = 10 with the number of steps = 10. However, as it can be seen from the picture, it gives the whole displacement at time = 1e-4 and then it jumps to end time while the displacement remains constant!
  
  Does anyone know what's wrong here? How we can use time step and end time in dynamic explicit?
- January 30, 2023 at 1:11 pm
  
  Ram Gopisetti
  Ansys Employee
  
  hi, What is your Damping factor and CFL timestep ?, if you set these correctly and follow the guide as in and what are you trying to model in here?
  https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v231/en/exd_ag/ds_exd_settings_types.html?q=TYPE
  it should be able to run it with no pre-termination, cheers, Ram
- January 30, 2023 at 6:33 pm
  
  ali.afrouzian
  Subscriber
  
  Thanks Ram for sharing the document.
  I really don't want to run mass scaling at this point. Normal run would be ok.
  My question is why my time step doesn't apply correctly. It looks like it applies the whole load/displacement in the first time step and then remains constant. I could not implement ramp load function as well.

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