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  • Users: aleximos
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  1. aleximos

    Result output for modal analysis

    thread1234-330486 Hi guys! I'm opening this thread again. I've always had the problem with the Nastran Options - Output Set Titles. When I have a Multicase Static analysis, it's convenient to configure the Output Set Titles to "3.. Nastran LABEL", but when I jump to Modal Analysis, the outputs...
  2. aleximos

    Element deactivation

    Is there any possibility to activate or deactivate an element or even better group of elements at some load cases? For example, there is a mass elemenet that at some load cases, it shouldn't be activated. Thanks in advance BR Alex
  3. aleximos

    Transform coordinate system of a load

    Hello guys! I'm trying to calculate statically a structure under differenct load conditions, where the load is rotating at specific angles in one plane. Is there any fast way to achieve it? I was thinking that it would be possible to define the desired positions by creating new coordinate...
  4. aleximos

    Spring element between solids

    Hello guys! I'm trying to model some solids elements connected with ONE spring CBUSH element and I have rigid motion problems :( Do you have any idea, how to eliminate this problem without modelling couple of spring elements? P.S. I've constrained the rotational dof of the CBUSH, but I'm still...
  5. aleximos

    Symmetry loads and RBE3

    Hello, I'm trying to distribute a load through an RBE3 element that happens to be on a symmetry plane. Unfortunately I get singularity errors from NX Nastran, bcs the RBE3 element has 3 constraints from the symmetry condition. I eliminate these 3DOF from the dependency dialog, but still get...
  6. aleximos

    Pick Query

    Hey guys! I can't find a way to select an entity using the option Pick-Query. It seems that you can only highlight it and read the ID only. Am I doing sth wrong?
  7. aleximos

    Error message: Unable to Expand Pressure from Load Definition 1 onto Surface xxxx in Load Set 1

    I am trying to apply pressure to a group of surfaces, where some of them are boundary surfaces. The load it seems to be applied and the results are the expected, I get however the following error message before analyzing the model Unable to Expand Pressure from Load Definition 1 onto Surface...
  8. aleximos

    feRenumberOpt

    Hey folks, I'm using the API command feRenumberOpt for renumbering a set of entities. But if I try to edit these entities later in my algorithm, they have the older IDs. Is there a way to edit them according to the new renumbered IDs. Thanks in advance Alexandros
  9. aleximos

    Surface aligned curves

    I'm trying to create a surface using the command Surface aligned curves, but I always get an error message "Failed to loft surface through curves, check direction of input curves". Even though I'm changing the direction of the curves with the command Reverse curves, trying with every possible...
  10. aleximos

    Curve has no facet

    As I was working with my model, suddenly many error messages appeared with invalid surfaces. I tried to rebuild my model, the errors continued appearing and when I reloaded my model, new error messages appeared "Curve xxx has no facet" and the whole geomety! [ponder] Does someone have any idea?
  11. aleximos

    Point to edge command error

    I have a question about the command Point to edge of the Meshing Toolbox. In the uploaded videos of the Femap community looks so cool, but when I use it I usually have the following error Point and Curve not on the same Parasolid Body, exiting. Do you have any suggestions? BR Alex
  12. aleximos

    Curve cleanup

    Hello! New to FEMAP and I'm having a problem with very small redundant curves, after editing my surfaces. I tried different commands like Geometry-Midsurface-Cleanup or Mesh-Geometry Preparation, in order to clean these redundant curves, but couldn't solve it. The weird is that if I select all...
  13. aleximos

    Ansys-column

    I would like to hear some suggestions about designing in Ansys APDL a concrete column with changing cross section through its height. The column should like the attachment. Is it possible to import coordinates from excel?

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