REPLACE ALL SUPERELEMENT SUBCASES WITH S.E. 0 SUBCASE, nosesubca.alt README FILE

M. A. Gockel, February 25, 2000

SUMMARY  Some postprocessors such as PATRAN provide more convenient output plotting when 
all superelements have the same subcase ID.  A request for one mode shape will be honored
across superelement boundaries without reference to subcase IDs.  This action is provided 
with this alter package when using extended subcase structures for input options in 
dynamic analysis.  An extended subcase structure is used when you want to have the 
subcases for one superelement to be different from that of another, for example, when 
the METHOD command points to different EIGRL entries for different superelements.

INPUT  Place "include 'nesesubca.alt'" before the CEND entry.  All output requests 
in the last subcase, used for the residual structure, will apply to all superelements.  
Output requests in subcases for superelements will be ignored.  All output can be 
turned off for particular superelements by use of the SEDR command above the 
subcase level.

OUTPUT  The output requests for the residual structure will produce output for all 
superelements.  For example, disp=all will cause all superelements to generate this 
output.

LIMITATIONS.  This alter is not applicable when boundary conditions change between 
superelments.  The alter was tested with the XDB feature, the preferred method for 
plotting superelement results.  

TEST PROBLEM.  The output from nosesubc1 demonstrates that the subcase id is the same for 
all output on a small superelement model.