General Mechanical

General Mechanical

modal results (mode shapes and mesh geomety) exporting problem

    • emirdegirmenli
      Subscriber

      Dear all,


      I am trying to export modal results to B&K Pulse Reflex for MAC test. I can't export them as any supporting format as you can see below. it is very important to finish my thesis Thanks. (my version is ANSYS 18.0)


       



    • peteroznewman
      Subscriber

      Dear Emir,


      After you solve, there is a .rst file that you can use to import into Pulse Reflex.


      In Mechanical, right click on Solution and select Open Solver Files Directory.


      You will see file.rst which is the file you are looking for.


      I zipped up one of those for you to try. It will have a familiar shape!


      Warm regards,


      Peter

    • emirdegirmenli
      Subscriber

      Thank you Peter, you solved my problem about ANSYS but I got error message about license in Pulse Reflex when I import .rst file you sent . Now I am trying to solve this problem with B&K dealer. I will let you know, best.


       


    • emirdegirmenli
      Subscriber

      Dear Peter, My B&K Pulse license allows to import only .UFF file format for finite models. I've searched  how I will export  geomety or/and mode shapes as .UFF format on internet but I could not find a direct way in Ansys. Do you know any alternative way, best. Emir

    • peteroznewman
      Subscriber

      Dear Emir,


      I have been reading about MAC and found this well written article. What is your goal for computing a MAC? Is it to compare modes within the ANSYS modal analysis (Auto MAC) or to compare the ANSYS modal results with experimental modal results (Cross MAC)?


      Did you know that ANSYS can calculate a MAC using the APDL command RSTMAC ?  Look it up in the online help. You can compare two modal analysis models or you can import experimental data in a .unv file format.  If you want to compare your modal model to experimental data, perhaps you should export the data from Pulse in a .unv format and import it into ANSYS.


      You (or whoever owns the Pulse software) can request a temporary license from B&K to evaluate the functionality of the ANSYS .rst file import.  Software vendors often give a 30 day free trial of a license before a customer agrees to purchase the software.  You can also request that whoever owns the Pulse software buys the additional license after you see that it works for you.


      SIEMENS acquired LMS, a competitor to B&K, and there is software called LMS Test.Lab that can do MAC. I found an example of how MAC can identify insufficient test points on an experimental modal analysis in the video at this link.  If you are talking with the B&K salesman about a temporary license for Pulse, and he says that they don't do temporary licenses, tell him that SIEMENS is willing to give you a temporary license of Test.Lab and you are going to use that to do your MAC. That will probably motivate the B&K sales rep to make the temporary license available  : )


      If the above suggestions don't get you what you need, with a great deal of effort, it would be possible to export the modal data in a text file format and reformat that into a .UFF format, but let me know if anything above works first.


      Best regards,
      Peter

Viewing 4 reply threads
  • You must be logged in to reply to this topic.