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  1. bbah123

    Calculate gradient of stress in a UMATH subroutine

    Hello everybody, i am trying to calculate the gradient of the hydrostatic stress within the UMATH routine and i obtained the hydrostatic stresses in the integration points from the Subroutine USDFLD. How is it possible to calculate the hydrostatic stress gradients with abaqus similar to these...
  2. bbah123

    Issue on using two subroutines

    Hello everybody, i am using two subroutines "USDFLD" and "UMATH" and i use the stress from "USDFLD" as a state variable to "UMATH". After finishin "UMATH" somehow my statevariable is again 0 but i want to keep it in order to have the stresses in all my integration points. I hope somebody can...
  3. bbah123

    I am using UMATHT subroutine for modelling of diffusion in ABAQUS. How to calculate gradient ?

    Hello everybody, i am trying to calculate the gradient of the hydrostatic stress within the UMATH routine and i obtained the hydrostatic stresses in the integration points. How is it possible to calculate the hydrostatic stress gradients with abaqus similar to these works ...

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