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  1. khalidfh

    Large Deformation Vs Small Deformation (Nlgeom on Vs off)

    Thanks DanStro I forget to tell it is steel. The material yield and plastic deformation starts. This is good. But the issue is necking occure only when Nlgeom option is On. I artificially increase the fracture strain from 0.11 and True stress of 1200MPa to fracture strain of 5 (or 500%) and true...
  2. khalidfh

    Large Deformation Vs Small Deformation (Nlgeom on Vs off)

    Hi I am simulating simple uniaxial tensile test using Standard (Implicit) Abaqus. Material (Density elasticity and plasticity) has been defined. Everything is just fine. The problem is when I turn the Nlgeom on, it show necking. What is the theory behind this? And how can Abaqus triger necking...

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