Getting Model Info from Patran Database .db

[MrRogers1987]

I received a random selection of analysis files from a recently departed colleague and I am trying to play forensic scientist to uncover what that status of the analysis was. Most of the analysis was done in Nastran which I have had no issues accessing in FEMAP. Some of the models were run in Patran which I am not as familiar with. For the models where I have a .bdf there's been issue as the file structure is nearly identical.

Several of the models there is only a .db database file however. Does this file contain the model information such as grid locations and elements/properties? Or is this just a result file? Can FEMAP import this file format?

 

[cohoman]

The .db file is a Patran database file. Since it is binary, you won't be able to do anything with it except open it using the Patran software. It does contain geometry, nodes, elements, loads, material, properties, etc. I don't believe there is any way you can read the .db file into FEMAP since this file is proprietary to MSC Software.

 

[MrRogers1987]

Thanks @cohoman! Do you know if there is any program outside of Patran itself that can read those files?

 

[cohoman]

I don't believe so because the database format is proprietary.

 

[dmapguru]

You can try exporting the model as a Nastran inptu file (the bdf extension is used by Patran for Nastran input files). Depending on which load case(s) and analysis types you select, you will get different case control, but as long as the elements in the model have assigned properties, Patran will export the GRID points, elements, physical and material properties and (as a function of selected cases) loads and boundary conditions. Rendez-vous in the Analysis form, and select Action: Analyze, Object: Entire Model, Method: Analysis Deck - use the Solution Type and Subcases buttons in the same form to select the analysis type and load cases.

DG

 

[MrRogers1987]

@dmapguru unfortunately I don't have Patran which is the heart of the problem. Otherwise I agree - this would be the ideal approach.

 

[dmapguru]

Ah, that subtlety did not come over in the OP. How many db files are we talking about, a couple or hundreds?

DG

 

[MrRogers1987]

Just a few.

 

[dmapguru]

If we could find a way to PM, I could try to extract the bdf rendition of the files from the databases if you let me have the .db files. However, I don't see a way to send a private message.