Is format documentation for the HDF5 results file available?

I'm a big fan of NASTRAN's ability to supply results in as HDF5 file, but occasionally I find it difficult to determine where to find the results I'm interested in. Currently I load the file into PATRAN to reverse engineer things that aren't clear, but it's a pretty inefficient process. It would be helpful if documentation for the format (for example what field names mean) was available.

0 karlR over 5 years ago

results data are documented in e.g. C:\MSC.Software\MSC_Nastran\2019fp1\msc20191\util\nh5rdb\DataType_v20191.html
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0 Don.Graff over 5 years ago

Maybe the following reference material will help... There is HDF5 info in the Nastran Reference Manual (section: The Nastran HDF5 Result Database)… also, the last few Release Guides has had documentation (version 2016 and 2017 for starters)… but probably best are a few articles on SimCompanion… here are the best ones:

https://simcompanion.mscsoftware.com/infocenter/index?page=content&id=KB8022549&actp=search&viewlocale=en_US&searchid=1534264675322

https://simcompanion.mscsoftware.com/infocenter/index?page=content&id=KB8022550

https://simcompanion.mscsoftware.com/infocenter/index?page=content&id=KB8022552&actp=search&viewlocale=en_US&searchid=1534264675322

And a couple Webinars that are good:

https://simcompanion.mscsoftware.com/infocenter/index?page=content&id=WM392&actp=search&viewlocale=en_US&searchid=1534264675322

https://simcompanion.mscsoftware.com/infocenter/index?page=content&id=WM393&actp=search&viewlocale=en_US&searchid=1534264675322
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0 Magnus.Andreasson over 5 years ago

Also the HDFViewer is handy to open the .h5 file and inspect the data. It can be downloaded here: www.hdfgroup.org/.../
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0 Vivek Bhardwaj over 5 years ago

To understand the directory structure one can do little python scripting:

import tables

data = tables.open_file("sol_103_with_bc.h5")

print(data)

This gives print something like below:

sol_103_with_bc.h5 (File) ''

Last modif.: 'Tue Dec 17 15:59:48 2019'

Object Tree:

/ (RootGroup) ''

/INDEX (Group) ''

/NASTRAN (Group) ''

/NASTRAN/RESULT (Group) ''

/NASTRAN/RESULT/DOMAINS (Table(52,)) ''

/NASTRAN/RESULT/ELEMENTAL (Group) ''

/NASTRAN/RESULT/MODAL (Group) ''

/NASTRAN/RESULT/MODAL/EFFECTIVE_MASS_MATRIX (Table(1,)) ''

/NASTRAN/RESULT/MODAL/MODAL_EFFECTIVE_MASS (Table(50,)) ''

/NASTRAN/RESULT/MODAL/MODAL_EFFECTIVE_WEIGHT (Table(50,)) ''

/NASTRAN/RESULT/MODAL/MODAL_MASS_FRACTION (Table(50,)) ''

/NASTRAN/RESULT/MODAL/MODAL_PARTICIPATION_FACTOR (Table(50,)) ''

/NASTRAN/RESULT/MODAL/RIGID_BODY_MASS_MATRIX (Table(1,)) ''

/NASTRAN/RESULT/MODAL/TOTAL_MASS_FRACTION (Table(1,)) ''

/NASTRAN/RESULT/NODAL (Group) ''

/NASTRAN/RESULT/NODAL/EIGENVECTOR (Table(3200,)) ''

/NASTRAN/RESULT/NODAL/SPC_FORCE (Table(3200,)) ''

/NASTRAN/RESULT/SUMMARY (Group) ''

/NASTRAN/RESULT/SUMMARY/EIGENVALUE (Table(50,)) ''

/NASTRAN/RESULT/ELEMENTAL/ENERGY (Group) ''

/NASTRAN/RESULT/ELEMENTAL/ENERGY/IDENT (Table(50,)) ''

/NASTRAN/RESULT/ELEMENTAL/ENERGY/KINETIC_ELEM (Table(2295,)) ''

if you do not use print(data) and just use data , then it would be much more detailed output with tags in it.
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