Prony Shear relaxation

- March 20, 2023 at 9:28 am
  
  Venkata Subramanian M
  Subscriber
  
  Sir/madam can you please tell me about which ASTM standard is used to calculate Relative modulus and relaxation time for Polypropylene material
- March 22, 2023 at 12:19 pm
  
  Ashish Khemka
  Ansys Employee
  
  Hi,
  
  I am not sure if this helps you: Standard Test Methods for Stress Relaxation for Materials and Structures (astm.org)
  
  Regards,
  Ashish Khemka
- March 22, 2023 at 12:28 pm
  
  Venkata Subramanian M
  Subscriber
  
  Thank for your reply is that test give the result for shear modulus/loss modulus vs relaxation time for polypropylene material.
  Another question that the ASTM D6147 give the result of force decay only. This can be converted into shear modulus. Can I apply this for ansys analysis of compression of polypropylene structure?

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