General Mechanical

General Mechanical

Creep integration algorithm convergence error

    • Samir Kadam
      Ansys Employee
      What is the cause for error message? The creep integration algorithm does not converge for element ...n
    • peteroznewman
      Subscriber
      Could be that the time increment is too large to achieve convergence. Try using a smaller time increment.n
    • Aniket
      Ansys Employee
      This error is almost always due to the creep parameters. Namely, if the creep equation results in very large creep strains, one will get the above error message. nPlease do the following:n if the strains are high: Look at equation TBOPT=6, modified time hardening: nhttps://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v202/en/ans_mat/rate.html%23aQy8sq33aldmnPlug that into Excel From the end of load step, first substep get a peak stress value of the creep material and solve for creep strain in Excel. There is an imposed displacement on the model, so we can assume that the stresses will probably increase, but add values for additional increments of time, keeping stress the same. nSee if the creep strains are reasonable.n-AniketnHow to access Ansys help linksnGuidelines for Posting on Ansys Learning Forumn
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