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Is there a possible way to achieve optimized design or initial design from SOL200 that I can directly import on PATRAN and do analyses for different cases?

karae16
Greetings,
 
My question will be about SOL200 “Design Sensitivity and Optimization”. I have a SOL200.bdf file. When I run it on NASTRAN, it gives F04 and F06 files. F06 file doesn’t state any fail, error or warnings. When I import SOL200.bdf file on PATRAN, some of the information (parameters and/or mesh) is skipped. Then, I tried to run the analysis one more time. However, it gives “$# Patran Nastran Preference Patran 2019 has released 0 license(s) to FLEXlm at 21-Feb-21 03:39:35.” and stop. There is only a db.jou file occurs.
 
I researched SOL200 and found information about “Nastran SOL 200 Web App”. The XDB file didn’t occur in my case.
 
When I import SOL200.bdf file on PATRAN, some of the material information and general FEM model can be seen. However, there is no specific information since it is an optimization process where design parameters are in a range. Is there a possible way for me to achieve optimized design or initial design that I can directly import on PATRAN and do analyses for different cases?
  • 0
    I'm not sure if this is what you are asking, but there is a way to get a "new" bdf file for the final design with all the updated properties. Add the following command to the Case Control section:
     
    ECHO = PUNCH(NEWBULK)
     
    In the resulting .pch file, a banner indicates the beginning of the updated Bulk Data entries:
     
    ENTIRE NEW BULK DATA DECK WITH UPDATED ENTRIES INSERTED
     
    If you cut out above this and rename the file to .bdf, you can import the model into a new Patran db.
     
     
     
  • 0
    Hello,
     
    There are several issues here.
     
    1. For Licensing you may want to contact MSC support if you are running into licensing issues.
    2. Nastran SOL 200 Web App is not supported by MSC and perhaps someone familiar with it can comment.
    3. Some Optimization related entries in BDF can be created in Patran and Read into patran upon import of the BDF.
    4. Once the Optimization Solution has been run ECHO=PUNCH(NEWBULK) option can be used to write out the PUNCH file
     
    Thanks,
    Sanjay.
    with updated design model entries.
  • 0
    @Don Graff​ @Sanjay Patel​  I am truly glad for your quick responses. I have tried all your suggestions but none of them worked. We got technical support and the problem is the files that we received are made in an older version of Nastran/Patran (probably 2012). The files are not compatible with the new version (2019) and there are some issues about missing data. If we succeed to restore the model, I will give an update about it.
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