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  1. nonlinearRus

    Using discrete rigid elements in thermal analysis?

    Hi all, I'm running a coupled temp-displacement model and I'm trying to debug the model at the moment. The model consists of a hyperelastic and viscoelastic material (foam) being compressed by a (simple) indenter. I had been using steel as the material for the indenter and it gave accurate...
  2. nonlinearRus

    Automating Abaqus jobs

    Hi, I have my model mesh optimized and running well. I now need to run a sensitivity analyses on some parameters within the model and then optimize the results of some other parameters once this is completed. I was thinking of trying to write the changeable parameters as variables within the...
  3. nonlinearRus

    Contact with Membrane elements

    Hi all, I am trying to model a seating system in Abaqus CAE. I'm using a hyperelastic+Visco model to model the behaviour of the foam and for now I'm modelling the person sitting as a hard wooden material. My model is working quite well for now but my results are a bit off as I have not modelled...
  4. nonlinearRus

    Applying load in Abaqus

    Hi all, I am just wondering what is the best method of applying a distributed load in the CAE solver in Abaqus? I have been trying to apply body forces, using amplitudes which break my steps up into smaller steps but and my model still crashes with too many increments. Has anybody any idea why...
  5. nonlinearRus

    Material Curve Fitting/Paramters

    Hi all, I'm trying to model a polyurethane foam in compression using the hyperfoam model in Abaqus. I'm doing the analysis for a comparison with other finite element packages, so I am quite new to Abaqus but I am familiar with finite element modelling in general. I'm trying to find the...
  6. nonlinearRus

    Inaccurate fit of Hyperfoam material model

    Hi all, I am trying to fit a 2nd order Ogden Hyperfoam material model to my experimental data. The material is compressed uni-axially. The model doesn't seem to be a 2nd order model, and looks more like a 1st order N-H model. Also the Mu1,Mu2 and Alpha1,Alpha2 values are the same. Can anybody...

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