Hello, The usual way Nastran exports reduced matrices is by using the op2/op4/pch formats using extout method. Is it possible to export them as HDF5's?? MATLAB being my external interface to Nastran can readily read HDF5's and hence my question.

Hello,

The usual way Nastran exports reduced matrices is by using the op2/op4/pch formats using extout method. Is it possible to export them as HDF5's?? MATLAB being my external interface to Nastran can readily read HDF5's and hence my question.

0 Vivek Bhardwaj over 3 years ago

You can get the stiffness and mass matrix in H5 file using below dmap commands in executive control section:

MALTER 'MALTER.*KGG' $

MESSAGE //'HERE IS STIFFNESS MATRIX'/$

MATPRT KGG//$

MESSAGE //'HERE IS MASS MATRIX'/$

MATPRT MGG//$

CRDB_MTX KGG//'KGGX' $

CRDB_MTX MGG//'MGG' $
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0 nlgyro over 3 years ago

Thx. You're doing it for the G-set matrices. Is there a way this ca be done after the application of SPC's (at the f-set level)??
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0 rayo over 1 year ago

Hello,

The above DMAP works fine. How are sparse matrices stored in the H5 file?
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0 Vivek Bhardwaj over 1 year ago

You can explore trying new bulk data entry HDF5OUT it also can be used to export the matrices using parameter MTX
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