temperature dependent coefficient of thermal expansion value

- March 16, 2020 at 12:48 pm
  
  Praveen95
  Subscriber
  
  Hello,
  
  I have the temperature dependent CTE values varying from 22°C to 180°C, now suppose I want to give thermal BC of -40°C, what would be the value of CTE in this case and how Ansys workbench Considers this.
  
  Thanks in advance
  
  Best Regards
  
  Praveen
- March 17, 2020 at 5:37 pm
  
  Sai Deogekar
  Ansys Employee
  
  Hello Praveen,
  
  Ansys Workbench will use the CTE value that is closest to -14 C (i.e. the CTE for 22 C) in this case. However, be sure to understand the difference between secant CTE and instantaneous CTE while defining the material properties. See Section 2.1.3 in: https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v201/en/ans_thry/thy_str1.html%23structempdep
- March 18, 2020 at 5:23 pm
  
  Praveen95
  Subscriber
  
  Dear Sdeogeka,
  
  Thank you for your satisfactory reply.
  
  Best Regards
  
  Praveen