Composite PDA – CDM Method

Composite PDA – CDM Method – Softening

- May 16, 2023 at 12:44 am
  
  mpirkle
  Subscriber
  
  Does the CDM method in progressive damage analysis take into account softening of the composite material? How can I account for softening? I am using the Hashin failure criteria with the CDM method to model a simple tension test of a composite laminate. Nonlinear geometry is turned on, and the ANTYPE is static. The elements are shell281. Is there any other code I should be adding to correctly model progressive damage?
  
  Thank you!
- May 17, 2023 at 6:04 am
  
  Ashish Khemka
  Ansys Employee
  
  Hi,
  You can use a multilinear model but the slope of true stress-strain curve should not be less than zero. Since, material failure is involved you can use Expicit Analysis as well.
  Regards,
  Ashish Khemka

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