*HEADING
: Submodel from pgs68srm [S8R]
*RESTART,WRITE
*PREPRINT,ECHO=YES,HISTORY=NO,MODEL=NO
*NODE
1,6.
7,6.,3.
29,10.,
35,10.,3.
*NGEN,NSET=NL
1,7,1
*NGEN,NSET=NR
29,35,1
*NFILL,NSET=NALL
NL,NR,4,7
*NSET,NSET=NT
14,21,28,35,
*NSET,NSET=NB
8,15,22,
*ELEMENT,TYPE=S8R,ELSET=EALL
1,1,15,17,3,8,16,10,2
*ELGEN,ELSET=EALL
1,3,2,1,2,14,3
*ELSET,ELSET=E1
1,2,3,
*SHELL SECTION,ELSET=EALL,MATERIAL=MAT1
0.001, 
*MATERIAL,NAME=MAT1
*ELASTIC
1.E6,0.3
*SUBMODEL
NL,NR,
*FILE FORMAT,ZERO INCREMENT
*STEP,PERTURBATION
*STATIC
*BOUNDARY,SUBMODEL,STEP=2
NL,1,6
*DLOAD
EALL,P,1.E-7
*EL FILE,POS=NODES,ELSET=E1,FREQ=999
S,E,
*EL FILE,ELSET=E1,FREQ=2
SF,SE,SVOL,
*NODE FILE,FREQ=1
U,
*NODE PRINT,NSET=NR,SUMM=NO
U,
*EL PRINT,FREQ=999
S,
*END STEP
*STEP
*STATIC
0.1,1.
*DLOAD
EALL,P,1.E-7
*BOUNDARY,SUBMODEL,STEP=2
NL,1,6
NR,1,6
*EL FILE,ELSET=E1,FREQ=2
SF,SE,SVOL,
*EL FILE
S,E,
*NODE FILE,FREQ=1
U,
*END STEP