6 Comments
  1. Oscar Juarez
    Oscar Juarez 4 months ago

    Hi,
    a couple of hints:
    Axissymmetric
    Horizontally constrained at the sides
    Vertically constrained at the bottom
    Mesh as coarse as possible (2 Elements)
    Vertical load on the top (varies with each load step)
    For the output select a Gauss point in one of the 2 elements and display vertical strain vs vertical stress
    You shouldn’t have any problems

    • Ayzukra Ablimit
      Ayzukra Ablimit 4 months ago

      Hi, I was also modelling oedometer test using Plaxis and did what you have mentioned. I am wondering how Plaxis is taking initial void ratio into account and is it possible to obtain the void ratio variation from the output or it should be calculated indirectly from the resultant strains? my goal is to obtain void ratio versus the vertical stress curve.

  2. Oscar Juarez
    Oscar Juarez 4 months ago

    Hi,
    The vertical strain in an Oedometer test is equal the volumetric strain, and using the simple soil mechanics relationships you can calculate the changes in void ratio or porosity.
    I am not sure if Plaxis can do this automatically (I doubt it) but then you have to check this on your own.

    Regards,

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