D3PLOT 22.1

The Extra Time History (.xtf) File

The Extra Time History (.XTF) file

Defining output parameters in Ansys LS-DYNA

The following Ansys LS-DYNA control cards control output of this file:

*DATABASE_BINARY_XTFILE

Is mandatory. It controls output frequency and if you don't have this card you won't have an .XTF file.

The contents of this file are determined by Ansys LS-DYNA, and you have no control over them.

It is intended primarily for time-history processing, but D3PLOT uses it to obtain the geometry and topology of springs, seat-belt types, joints, stonewalls and lumped masses. D3PLOT ignores the state information in it (use T/HIS to process that).

Generic contents of the .XTF file.


Control data:
Title
Number of nodes
Number of elements
Amount of data written for elements
Initial data block:
Nodes for reactions
Spring topologies
Seat-belt etc topologies
Lumped mass data
Joint geometry
Stonewall geometry
Arbitrary numbering tables
Beam element time history blocks
Complete states (repeated n times)
(Not processed by D3PLOT)