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Recent content by benoitvalley

  1. benoitvalley

    MS dos batch file for starting multiple small analyses in once

    Referring to this thread: thread799-89238, in order to run multiple analyses with a MS dos batch file, one need to include the keyword call (ref.) in the file or alternatively use brackets (ref.). Example: Write the following in your text editor and save it as myruns.bat call abaqus job=Job-1...
  2. benoitvalley

    Borehole bottom axisymmetric analyses in abaqus

    I found my mistake: for my case, in a axisymmetric analysis, radial (x-direction) and out-of-plane (z-direction) initial stress magnitude must be equal, i.e. not only the problem geometry must be axisymmetric about the y axis, but also the stress state. For example the following will work...
  3. benoitvalley

    Borehole bottom axisymmetric analyses in abaqus

    Thanks IceBreakerSours for your advices. I'll follow up with your suggestions. I will also follow up on another aspect they I may have wrong. I fund on-line a document describing geotechnical analyses with abaqus...
  4. benoitvalley

    Borehole bottom axisymmetric analyses in abaqus

    Hello. I believe I am consistent with my units. I use a linear elastic material with a Modulus of 65 GPa and Poisson ratio of 0.25 which is typical for a ~granitic rock. I have in-situ stress conditions of -50MPa, -20MPa and -10MPa (negative for compressive stress) which corresponds to deep...
  5. benoitvalley

    Borehole bottom axisymmetric analyses in abaqus

    Hello. I have done more tests on this issue and still do not understand what goes wrong. I believe now that the issue is with the initial stress conditions and the equilibration in the initial step. However, I don't understand what is going on during the initial step. I build a very simple...
  6. benoitvalley

    Borehole bottom axisymmetric analyses in abaqus

    Hello - I try to model displacements and stresses about a borehole bottom drilled in a rock mass with initial stress conditions. I want to start simple, elastic material properties, axisymmetric model. I use CAX8R elements. I use "*Initial conditions, type=stress" to set my initial in-situ...

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