Von mises , tresca

- March 17, 2022 at 8:33 am
  
  Medri17
  Subscriber
- March 17, 2022 at 8:53 pm
  
  Medri17
  Subscriber
  
  can somebody please help ?
- March 23, 2022 at 3:18 pm
  
  Ram Gopisetti
  Ansys Employee
  
  rest the frings and check agin
  Cheers, Ram
- March 24, 2022 at 8:39 am
  
  Medri17
  Subscriber
  
  I found the solution , i didint activate database extent binary , now when i did , von mises plots , but i have another problem , some Von mises deformations plot before impact , i activated cross section , maybe thats the reason why ?
- March 24, 2022 at 6:36 pm
  
  Jim Day
  Ansys Employee
  
  Assuming the vehicle is given an initial velocity (INITIAL_VELOCITY_...), check to make sure the velocity is uniform in the first plot state at t=0. You can do this by plotting velocity vectors or fringing resultant velocity at t=0. If the velocity is not uniform, stress will naturally develop.
- March 25, 2022 at 10:39 am
  
  Medri17
  Subscriber
  
  the velocity is uniform , yet im getting 1800 mpa before impact?
- March 25, 2022 at 2:03 pm
  
  Jim Day
  Ansys Employee
  
  As an experiment, comment out or remove all *CONTACT input. If that resolves the unexpected stress before impact, then we know the problem is due to contact. Reply back after you perform this experiment.

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