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  1. IceBreakerSours

    analyst vs. management

    I was wondering what sorts of hills computational analysts in the "mature" (from a computational structural mechanics perspective) industries choose to avoid fighting on and which ones they think are worth dying for. I won't elaborate on the question so interpret it any way you like and let's...
  2. IceBreakerSours

    ansys buys ls-dyna - thoughts?

    What are your thoughts? ********************************************************* Are you new to this forum? If so, please read these FAQs: http://www.eng-tips.com/faqs.cfm?fid=376 http://www.eng-tips.com/faqs.cfm?fid=1083
  3. IceBreakerSours

    thanks bartosz!

    Your (g)VIM plug-ins for Abaqus (and LS-DYNA) are awesome. Thank you! ********************************************************* Are you new to this forum? If so, please read these FAQs: http://www.eng-tips.com/faqs.cfm?fid=376 http://www.eng-tips.com/faqs.cfm?fid=1083
  4. IceBreakerSours

    solver changeover cost

    About a year or so, I decided to switch the only tool I was ever familiar with for my analysis needs. I gauged its capabilities, solution accuracy, cost, licensing, support, etc. and it came on top in each category so I started presenting the argument to others that they might want to consider...
  5. IceBreakerSours

    ANSYS -> ABAQUS translation

    I am an ABAQUS user and I am trying to translate an ANSYS model so ABAQUS can consume it. I have tried using: a) HyperMesh (HyperMesh->ANSYS->ABAQUS and HyperMesh->ANSYS->OptiStruct->LS-DYNA->ABAQUS) b) FE-Modeler Workbench plug-in (ANSYS Workbench->FE-Modeler->Abaqus) c) LS-DYNA Workbench...
  6. IceBreakerSours

    Modeling friction and frictional coefficient measurement

    What are the best practices in measuring frictional coefficients if one or both bodies involved in the interaction are highly deformable and sticky? How would you go about modeling such a phenomenon? I already have a strategy on paper but would like to get some input from the experts here...
  7. IceBreakerSours

    porous elasticity; FEA using ABAQUS

    I have a few questions regarding simulating porous elasticity in FEA using ABAQUS. Are there any experts here from this area of research who might be willing to help me out? I have already posted my problem in one group on e-tips here. http://www.eng-tips.com/faqs.cfm?fid=376...
  8. IceBreakerSours

    uanisohyper_inv and uhyper

    I want to add stretch dependency to the Neo Hookean strain energy density potential (implemented in UHYPER). Is it possible to "export" the stretch (square root of I4) from UANISOHYPER_INV to UHYPER? How? http://www.eng-tips.com/faqs.cfm?fid=376 http://www.eng-tips.com/faqs.cfm?fid=1083
  9. IceBreakerSours

    soils "Calculation of phreatic surface in an earth dam"

    Dear members, I am trying to understand how soil consolidation analysis works using the example entitled "Calculation of phreatic surface in an earth dam" in the ABAQUS Examples Manual (specifically, phreaticsurf_cpe8rp.inp). I noticed a few statements in the example that I did not quite...
  10. IceBreakerSours

    field variable dependency - hyperelastic material

    I have been trying to assign field variable dependency for materials other than Marlow and running into issues. I have uniaxial tensile stress-strain data that I'd like to be able to scale with a field variable (from 0 to 1). I guess I could scale it by "find and replace in place" using...
  11. IceBreakerSours

    field variable not reaching its assigned value

    I am running a static model (with c3d20rh elements assigned with Mooney-Rivlin material definition) that is under a tensile load. A chain of connectors is embedded within the continuum elements. Nonlinear elastic connector behavior is assigned with one field variable. Nonlinear geometry flag is...
  12. IceBreakerSours

    connector nonlinear elasticity - scaling

    I have been trying to make the following work on and off but have not made any significant headway. Any help would be much appreciated. I would like to scale the non-linear elastic (force vs. disp.) behavior of a chained set of connector elements until some condition (say, a certain level of...
  13. IceBreakerSours

    soils analysis of a biphasic tissue in 3D

    My goal is to run a soils analysis as per this research article. Please see the attached INP. All parameters (except one) were acquired from this paper. However, the geometry is simple. C3D8PH elements are used. I am noticing a warning message WarnNodeICDef - initial conditions not uniquely...
  14. IceBreakerSours

    psf and subroutine

    Is there any way in which I can make a parametric study run with my material model in a subroutine? http://www.eng-tips.com/faqs.cfm?fid=376
  15. IceBreakerSours

    soft tissue incompressibility; uanisohyper_inv

    Dear all, I am trying to add a pair of incompressible soft tissues in 3D to an anatomical structure. One of the ends of each of the soft tissue meshes (C3D8H) is tied to a stiff anatomical surface and the other end is in hard contact with a block that is constrained to be rigid. The reference...

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