LS Dyna

LS Dyna

why i am getting factor of safety less then 1 ?

    • pegasus
      Subscriber
    • Ashish Khemka
      Ansys Employee

      With the change in tangent modulus, FOS will also vary. Please see the explanation below:
      Bilinear Isotropic HardeningModel
      Thebilinear isotropic hardeningplasticity material model, often used in large strain analyses, is described by a bilinear effective stress versus effective strain curve. The initial slope of the curve is equivalent to the Young's modulus of the material. Beyond the specifiedYield strength value(¤ây), plastic strain develops and stress-vs.-total-strain continues along a line with slope defined by theTangent Modulus(Et). The tangent modulus cannot be less than zero or greater than the elastic modulus.
      You can define yield strength and tangent modulus as constants or expressions.

      Regards Ashish Khemka
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