Temperature-dependent properties have not been specified

- March 15, 2023 at 3:59 pm
  
  Asif Haq
  Subscriber
  
  I running a simulation in transient thermal. I have input temperature dependent thermal conductivity for steel 1010. I am given the following error. The following image is the property that I used. How can I get around this issue.
  *** WARNING *** CP = 1.547 TIME= 17:00:34
  Using 1 iteration per substep may result in unconverged solutions for
  nonlinear analysis and the program may not indicate divergence in this
  case. Check your results.
  
  *** WARNING *** CP = 1.547 TIME= 17:00:34
  Temperature-dependent properties have not been specified. The
  THOPT,QUASI option does not perform equilibrium iterations. Small
  time steps may be required to obtain accurate results.
  
  *** WARNING *** CP = 2.359 TIME= 17:00:34
  Element shape checking is currently inactive. Issue SHPP,ON or
  SHPP,WARN to reactivate, if desired.
  
  *** WARNING *** CP = 2.812 TIME= 17:00:34
  Material number 17 (used by element 98218) should normally have at
  least one MP or one TB type command associated with it. Output of
  energy by material may not be available.
- March 16, 2023 at 12:23 pm
  
  Aniket
  Forum Moderator
  
  Hi, These are warnings, not errors, does your other material have temperature-dependent conductivity as well? The warning could be due to other material.
  -Aniket
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- March 17, 2023 at 9:46 am
  
  Asif Haq
  Subscriber
  
  I am exporting ohmic losses into transisent thermal. That does not have any temperature dependent proporties. I am only interested to look at the object that i am heating.
  In transient thermal, there is only 1 material. that is steel 1010. The simulation does not complete either.
- March 17, 2023 at 11:18 am
  Aniket
  Forum Moderator
  two things:
  1. try deleting the stainless steel defined in the Engineering data
  2. refresh cells B4 and B5 before solving again.
  You mentioned that the solution doesn't complete, are there any other errors in solver output?
  -Aniket
  How to access Ansys help links
  Guidelines for Posting on Ansys Learning Forum
  - March 17, 2023 at 12:15 pm
    
    Asif Haq
    Subscriber
    
    I have deleted all the information and started the material from scratch. I have input thermal conductivity , young modulus, poissons ratio, and density upto 1600c. WELL IT DID RUN BUT THE THE FINAL TEMPERATURE OUTPUT WAS 9000 degree C.
    SO i deleted it again and only input thermal conductivity and limited it to 1000 degree C. I have results now. I guess Ansys cant handle temp dependent data above 1000 degree or i might be missing something fairly obvious.
    - March 17, 2023 at 1:01 pm
      
      Aniket
      Forum Moderator
      
      I don't think there's any limit for data in the material. Have you checked the mesh and ITS are as per the required guidelines mentioned here under "Number of substeps per load step, or the time step size":
      https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v231/en/ans_the/Hlp_G_THE3_5.html
      -Aniket
      How to access Ansys help links
      Guidelines for Posting on Ansys Learning Forum