General Mechanical

General Mechanical

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State variable definition for transient thermal problem

    • Loïc Féréol


      I'm currently working on a project where I have to define, evaluate and study a function depending on temperature and its time derivative for a transient thermal problem.

      The calculus must be made in the solving process and not in the post processing. To do so, my idea is to use the Usermatth routine and define the function as a state variable. Is it the best way to do it ? If so, is there an existing template that does this type of operation ?


      Loïc Féréol

    • Ashish Khemka
      Forum Moderator


      Please see if the following link helps: Chapter 3: Accessing the Mechanical APDL Database (


      Ashish Kumar




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