Nastran export options

This dialog is accessed from the File > Export > Nastran (bulk data file) menu command. For more details on Nastran export see Nastran export.

Bulk data format: Small field, large field

Nastran data can be written in either small or large fields. In general large field format is preferable.

Solution method / number of modes

This determines if items such as loading should be written (static) or the user asked for the number of modes (dynamic or buckling).

Analysis stage

The model corresponding to the particular analysis stage will be exported.

Export section shape information

Some versions of Nastran (e.g. MSC/Nastran) support section shape information. If this option is selected the section dimensions are exported otherwise only the section properties (area, second moments of area etc) are exported.

Export modified section properties

If this is ticked section modifiers are taken into account when writing section properties, otherwise they are ignored.