Input file used by MSC Nastran, a program that analyzes structures such as aircraft, buildings, and spacecraft; contains bulk data definitions to be input into MSC Nastran to analyze the stress and strain levels of model structures; includes information such as the name of the bulk data, the number of grids, and the node locations of the elements that make up the models; data appears in the FORTRAN programming language, which was originally developed by IBM, and stands for Formula Translating System.
BDF files are separated into 5 sections:
NOTE: The BDF file is similar to the .NAS and .DAT files, which are used to input data by MSC Nastran.
ASCII-based font format used on both Macintosh and Windows systems; stores Adobe screen fonts as human-readable data; must be placed in the system Fonts folder in order to be recognized by applications.
BDF files are referenced by programs that access system fonts.