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  1. smallpea14

    Apply tension for membrane element by edge shell load?

    Hi All, I am trying to apply tensile load to general membrane element, M3D4R. I tried using edge shell load, EDNOR on the cross-section surface (1mm thickness, 1m width). I was told that LOAD TYPE EDNOR IS NOT VALID FOR ELEMENT TYPE M3D4R? And then I tried the pressure loading and was told the...
  2. smallpea14

    bizarre results for function of young's modulus with principal stress defined by USDFLD

    Hi Bartosz, If you come back to the forum, could you please help me to check my files again? I am really in the need of your help. To be simple, I deleted my Mohr-Coloumb part in input files. For the three cases as described before, case A(3Dela) without any subroutine; Case B(3DUSRAela) with...
  3. smallpea14

    bizarre results for function of young's modulus with principal stress defined by USDFLD

    Hi Bartosz, Thanks so much for your efforts. Yes, sp3 is maximum pricipal stress in Abaqus which defines tension is positive by default. But in my case, compression is positive and I want to define E dependent on -sp3 (minimal absolute value). So I don't think there is problem at this matter...
  4. smallpea14

    bizarre results for function of young's modulus with principal stress defined by USDFLD

    Hi Bartosz, I really appreciate for your explanation and nice material. Yes, please help forward this to Simulia help support if applicable. I have no access to that. Also, thanks for your explanation about calling sequence of USDFLD. I realized this when I compared the output of state value...
  5. smallpea14

    bizarre results for function of young's modulus with principal stress defined by USDFLD

    Hi Bartosz, Thanks so much for your efforts. Yes, I need to define a E law dependent on SP3(minor principal stress) with Mohr-Couloumb plasticity failure criterion eventually. In my case, sp3 should increase gradually. This very simple triaxial test was just meant to test if this simple usdfld...
  6. smallpea14

    bizarre results for function of young's modulus with principal stress defined by USDFLD

    Hi Bartosz, Thanks so much for your reply, Bartosz. Actually, I got the idea from your previous posts answering other person's questions. As for method b, yes, you are correct.I set field variable as -sp3 or zero but in the input file i calculated the E as the same function as defined in method...
  7. smallpea14

    bizarre results for function of young's modulus with principal stress defined by USDFLD

    Hi all, I got great help from reading previous posts relate to defining elasticity function by USDFLD. By imitating those examples, I defined young's modulus as a simple function of minor principal stress by following two methods. Young's modulus was defined as field variable by itself in...

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