Download NASTRAN Bulk Data Loader

Upgrades
The following lists the enhancements made to ZNDAL over prior versions.
Version 2.0
• The entire bulk data deck is loaded into memory to avoid the generation of intermediate
files and to speed up the data processing.
•
Load times of the bulk data input deck are 30-60% faster.
•
Unique continuation fields are now supported.
•
A bug that could occur when a CORD2x card referenced a CORD1x card has been fixed
(i.e., a warning message was generated stating that the referenced CORD1x card did not
exist). Newly implemented logic provides for faster and more efficient generation of
coordinate transformation matrices.
•
Grounded terminals for elastic spring elements CELAS1 and CELAS2 are now
accounted for by setting the blank grid field (i.e., the grounded terminal) to the same
GRID ID as the single input grid. Older versions of ZNDAL would notify the user that a
GRID ID = 0 was found, which was not allowed.
•
Comments (initiated by a leading $) located at the end of free-formatted bulk data input
line are now allowed. For example the following input:
GRID, 10, , 100.0, 0.0, 0.0, $ this is a comment
would have resulted in an error message since 10 commas are not used to represent all
fields. The current version of ZNDAL removes the comment and sets the remaining
fields to blank fields.
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