Can you provide a test that shows that CMS superelements, rotated with SETRAN, give a correct solution?


Yes. Here is a test that creates a 20x20 plate with a CMS superelement (free method) and three rotated duplicates using rotational SETRAN commands. The superelement matches a non-CMS modal solution.

/prep7
et,1,181
mp,ex,1,1e7
mp,nuxy,1,.3
mp,dens,1,.0003
r,1,.1
rect,,10,,10
esize,2.5
amesh,1
fini
/solu
antyp,substr
cmsop,free,12
seopt,sup1,2
nsel,s,loc,x,0
nsel,a,loc,y,0
nsel,u,loc,x,10
nsel,u,loc,y,10
m,all,all
nsel,all

nsel,s,loc,x,10
nsel,a,loc,y,10
d,all,all
nsel,all

solve
fini

save,substr,db

/clear

/filn,use
/prep7
et,1,50
se,sup1
local,11,1,,,,90
csys,1
setran,sup1,11,200,sup2,sub,,,,,1
local,12,1,,,,180
csys,1
setran,sup1,12,400,sup3,sub,,,,,1
local,13,1,,,,270
csys,1
setran,sup1,13,600,sup4,sub,,,,,1

se,sup2
se,sup3
se,sup4

cpintf,all
fini

/solu
antype,modal
modop,lanb,12
mxpand,12
solve
fini

resu,substr,db
/filn,file

/solu
expass,on
seexp,sup1,use
expsol,1,1
solve
fini

/clear

! compare with non-superelement solution
/prep7
et,1,181
mp,ex,1,1e7
mp,nuxy,1,.3
mp,dens,1,.0003
r,1,.1
rect,,10,,10
rect,-10,0,,10
rect,-10,0,-10,0
rect,,10,-10,0
numm,kp

esize,2.5
amesh,all

nsel,s,ext
d,all,all
nsel,all

fini
/solu
antyp,modal
modop,lanb,12
solve
fini

/post1
set,list





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