Export ANSYS File: PREP7 and SOLU Data

Description

ANSYS files generated by Straus7 can be identified by the following header (where the export format, current date and time have been inserted):

!--------------------------------------------------------------------------------

! ANSYS BATCH (1 FILE) FORMAT DATA BASE FILE

! GENERATED BY Straus7 EXPORT ANSYS FACILITY

! TIMESTAMP: 07:07:07 am, 31 March 2021

!--------------------------------------------------------------------------------

Export formats supported by Straus7 include the Batch (1 File), Batch (3 File), Blocked CDB and Unblocked CDB formats. For the Batch formats, all model data and load case dependent data are exported within the PREP7 section, with the exception of pre-tension and pre-stress attributes, which are written using the ISTRESS command within the SOLU section. For the Batch (1 File) format, all model data is written to a single file. For the Batch (3 File) format, node and element data are written to individual node and element files, while the remaining model data and load case dependent data are written to the main file. For the Blocked CDB and Unblocked CDB formats, all model data and load case dependent data is exported within the PREP7 section. Pre-tension and pre-stress attributes are ignored by the CDB formats as the ISTRESS command is not valid in the PREP7 processor state (the CDB format requires that all model data and load case dependent data be written within the PREP7 section).

The PREP7 and SOLU sections begin with the /PREP7 and /SOLU commands respectively, and end with the FINISH command. Model units are written to the ANSYS file using the /UNITS command. The Straus7 export units are listed with the equivalent unit labels exported with the /UNITS command:

Straus7 Units	ANSYS Units Label
No Units	USER
kg-m-C	SI
g-cm-C	CGS
T-mm-C	MPA
sl-ft-F	BFT
lbm-in-F	BIN

The /NOPR command is written at the beginning of the ANSYS file to suppress expanded printout of information related to the data input process. The /GO command is written at the end of the ANSYS file to reactivate the expanded information printout. The NUMOFF command is written to offset the numbering of an existing model when the exported model is imported into ANSYS. Offset numbering is written for the NODE, ELEM, MAT, TYPE, REAL, SECN, CE and CSYS items.