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  • Users: Dan90
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  1. Dan90

    Overall Sound Pressure Level calculation

    Hello to everybody, I am a bit confused about the calculation of an OSPL of a pressure spectrum. From what I learned, I know that the OSPL should be a number describing how much energy is related to the spectrum under consideration. Nothing special so far, but I read about two formulas for its...
  2. Dan90

    Problem in acoustic modes analysis

    Hello to everyone, I am having problems with a eigenvalues analysis. In particular I need to extract the acoustic modes from my model. I have created a fluid material (mat10), specifying all the properties needed, but when I run the analysis the following fatal error appears: *** USER FATAL...
  3. Dan90

    Volume body from solid structure

    Hi guys, My part consists of an airbox for automotive applications and I need to get the air volume inside it which, of course, is not present as body. Does anyone know a simple way to obtain such an air volume as a body (starting from the airbox)? I have attached an image of the airbox...
  4. Dan90

    Problem in exporting a .stp solid

    Hello to everyone, As in the thread below, I do not succeed in exporting a solid object in a step file, namely when I try to import it in another program the exported .stp file contains only surfaces. Is there anything I have to check before performing the export operation? Thank you for your...
  5. Dan90

    Import geometry problem

    Hello to everyone, I have a problem in importing a geometry from Siemens NX to FEMAP. In particular my CAD is constituted by an assembly. First, if I try to import the .prt file directly from Siemens NX, no solids or sufaces are imported at all. Then If I try to import in FEMAP environment a...
  6. Dan90

    How to prepare a geometry for mesh

    Hi to everyone, I have to mesh a geometry and, before this, I want to "clean" my CAD model from things like words etc., in order to make easier to mesh it. I have attached an image of my model in which there is a surface I want to delete and I wonder if an efficient method (that is not...
  7. Dan90

    How to modify the aspect ratio of an element

    Hi to everyone, I have a problem with the aspect ratio of some elements within my meshed geometry. Practically I need to mesh a geometry with a max aspect ratio equal to 5, but, after many operations on my mesh, some elements still have a too high value of the aspect ratio. Can someone...
  8. Dan90

    Export operation

    Hello, I have a problem in exporting a geometry I have created. More precisely, I want to export my model in such a way that it appears as made of only one solid instead of all the boolean/extrusion operations. Can someone help me with this issue? Best regards.
  9. Dan90

    MESHING: 3D elements to 2D elements

    Hello to everyone, Is it possible in FEMAP 11 to extrapolate from a 3D element only one "surface" in order to obtain a 2D element to which it is possible to assign a plane element property?
  10. Dan90

    Normal modes analysis of a two plies plate

    Hi to everyone, I am completely new to the use of FEMAP and, as in the subject, I am trying to perform a modal analysis of a two plies plate but I am having two fatal errors from NX nastran. In particular, the setup of the analysis I have setted is the following: 1) To import the .IGS file of...
  11. Dan90

    How to export coordinates of points

    Hi to everyone, I am quite new to the use of UG and I need some help. Practically, I need to export in exel or text file the coordinates of some points which i have selected on an existing part. Can anyone help me?

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