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  • Users: Jhno
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  1. Jhno

    Stability

    Hi, I have the following problem. I start a small symetric model which I analyse in static mode. Everything is stable, convergence is very good. I then switch to dynamic analysis, without adding anything (no force, no mass, nothing). The system is very simple, as shown in the picture. It consist...
  2. Jhno

    Convergence

    Hi, I am conducting a displacement controlled analysis. In a first attempt, I ran 30 000 steps for a 0.1 displacement total ( that make 0.1 / 30 000 displacement per steps). Then it failed at around 28800. I said fine, I'll just increase the number of step, to, say 35 000. There I thought I had...
  3. Jhno

    Mesh size

    Hi, I would like cue on a issue I have with my FE model. I do model (or try ot) the ultime bearing capacity of a footing resting on a purely frictionnal soils (I do take account the weight of the soil). I use quad element to mesh to soil. The stress-strain rel. is a Drucker-Prager. I did use...
  4. Jhno

    Displacement - Stress analysis - ElasticIsotropic

    Hi, I am modelling a soil deposit using quadElement. I use a ElasticIsotropic material for the moment. I define a grid 10x10 (meters) with meshing at 1 m in both directions. I assign mass to the element in their vertical direction to simulate gravity effect and I plots the results using R (you...
  5. Jhno

    Total stress analysis

    Hi, I am trying to create a soil model to conduct a total stress analysis. I use Opensees to do so. I would like to know if my model constraints looks okay. I have a number of convergence issue and I wonder if those are due to my model being ill defined. The model have loop that iterate to...
  6. Jhno

    Gauss-Legendre

    Hi, I am new to the forum so if I post the question in the wrong section excuse me! I am a new user to the finite element method and I am learning by myself so please don't get offended if my question seem a little stupid... there is much to learn on the FE subject. Right now, am using the...

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