How to find Norton-Bailey Creep Constants?

- April 5, 2023 at 2:37 pm
  
  Joshua Davies
  Subscriber
  
  Hello All,
  I am trying to mimic my experimental results with a model in ANSYS, and incorporate creep.
  The experiment is simply measuring deflection of this old timber over the course of a few weeks in order to try to find a few material properties.
  However, how do I find the constants purely from the data below?
  Any help would be massively appreciated.
  Thank you in Advance!
- April 10, 2023 at 2:23 pm
  
  John Doyle
  Ansys Employee
  
  I assume by "Norton-Bailey" you mean an expression of the following form:
  In Ansys, you can curve fit the Time Hardening Creep expression, with C4 set to zero.
  You would have to convert your displacment values to an equivalent strain (=delta_L/L).
  Please refer to Chapters 4 and 6 of the MAPDL Material Reference Manual or more details.
- July 31, 2023 at 10:05 am
  
  Chandra Sekhar Narra
  Subscriber
- July 31, 2023 at 10:08 am
  
  Chandra Sekhar Narra
  Subscriber
  
  Dear Joshua Davies,
  I saw your post about the calculating the creep constants from the experimental data. Have you found the solution for this? while now I too have the same problem, I could not find the right solution.
  Could you please help me with that?
  Iam looking forward for your response.
  Kind regards
  Chandra