Calculation of Creep Strain Rate

- August 9, 2019 at 8:04 am
  
  Patti
  Subscriber
  
  Good morning,
  
  I got test data from a creep test (Creep Stress, Creep Strain, Isochronous Stress-Strain-Diagramm, Creep Moduls).
  
  Now, I am trying to fit these data to a suitable creep equation, using Creep Curve Fitting with ANSYS MAPDL to generate necessary coefficients.
  
  Most of the creep models require the Creep Strain Rate. Actually I don't know how to get these Information, maybe someone can give me a tip?
  
  Thanks in advance.
  
  Regards,
  
  Patrick
- August 9, 2019 at 12:25 pm
  
  peteroznewman
  Subscriber
  
  Hello Patrick,
  
  In this post, I show the Norton equation for creep strain rate, which is an output, not an input.
  
  Regards,
  Peter
- April 2, 2020 at 6:39 pm
  
  gopikrishna
  Subscriber
  
  sir, can you please explain how to find the creep constants for norton model in ansys
- April 2, 2020 at 11:50 pm
  
  peteroznewman
  Subscriber
  
  Setup an experiment in the lab with a physical sample with known sample geometry (cross-section and length), and a known load, then with precision instrumentation, track the change in length vs. time. Fit the creep model to this experimental data and you will get the creep constants.
  
  ANSYS provides curve fitting software that takes the experimental data and does the nonlinear curve fitting of the model to the data to provide the creep constants.