The targets of the read and write functions are:

HyperCrash reads only the NASTRAN bulk format.

Control cards

The Nastran control cards are just able to read and write without any modification possibilities. These lines are kept in the M00 file.

Header

The Nastran bulk data reading will start from the keyword line:

BEGIN BULK

The lines above this keyword line will be set as control cards.

Read and write entities

The following table shows the read and write entities by HyperCrash. Most of the NASTRAN entities are translated into a RADIOSS entity.

Currently the following NASTRAN cards are supported:

black        : development finish

orange        : under development

red        : development planned

Spotwelds

The spotwelds of the RADIOSS model are translated with the following FEM NASTRAN model:

The spotweld information is written in the <root_name>M00 file.

HyperCrash can translate the previous FEM NASTRAN model to Altair’s spotweld if a <root_name>M00 file can be read during the import of the NASTRAN file.

End of the data

The following keyword line of the end of the file defines the end of the bulk data.

ENDDATA