How to find equivalent Stress and Strain in Composites in Ansys Classic for Hill Failure theory

- December 21, 2018 at 12:58 pm
  
  vgattineni
  Subscriber
  
  Hi, As per Ansys Classis when Hill failure criteria is chosen, we need to input the ratios of failure stresses. Does it mean, it is the ratio of Failure tensile stress/ Failure Compression Stress?? Also for equivalent stress during post processing, Do I use effective stress and effective strain, in place of regular von Mises? Please clarify???
- December 21, 2018 at 7:52 pm
  
  April Wang
  Ansys Employee
  
  Hi,
  
  Can you upload screen captures? This might make the question more clear.
  
  Thank you.
  
  Regards,
  
  April
- December 21, 2018 at 8:41 pm
  
  April Wang
  Ansys Employee
  
  You might want to check this about Hill failure in ANSYS HELP (open Help, select Tools from menu bar, select "go to page" and paste the address):
  
  help/acp_ug/Quadratic_Failure_Criteria.html#Tsai-Hill_failure_criterion
  
  Regards,
  
  April