How to define below material property (Elongation at Break in 200 mm& 50 mm)?

- October 21, 2023 at 9:51 am
  
  g202202120
  Subscriber
- October 23, 2023 at 5:09 pm
  
  Chris Quan
  Ansys Employee
  
  First of all, Elogation is an Engineering Strain. If you want to include it in material models in Engineering Data (for example, plasticity), you may need to convert it to True Strain.
  Usually, a larger or longer specimen may contain more material defects and thus is easier to break than a smaller or shorter specimen. That may explain why the elongation is lower in a 200 mm specimen than that in a 50 mm specimen.
  If you want to include the elongation in your material properties, I would suggest you using the value at 200 mm for conservative solution.
- December 8, 2023 at 1:57 pm
  
  g202202120
  Subscriber
  
  thank you Chris
- December 11, 2023 at 2:32 pm
  
  David Mercier
  Ansys Employee
  
  You can have much more data in the Granta products (MaterialUniverse, Jahm databases...) related to this material if necessary. Like stress strain curves at different T, and already well formatted to be exported into Mechanical.