*HEADING
 :  C3D8R MODEL CHANGE VERIFICATION; ELASTIC MATERIAL
*NODE
*NGEN,NSET=BOT
*NGEN,NSET=TOP
*NFILL,NSET=NALL
BOT,TOP,4,100
*NSET, NSET=XFIX, GEN
*NSET, NSET=YZFIX
*NSET, NSET=YFIX
*NSET, NSET=XMOVE, GEN
*NSET, NSET=YZMOVE, GEN
*ELEMENT,TYPE=SC8R,ELSET=EALL
*ELGEN,ELSET=EALL
*ELSET, ELSET=EREMOV
*SHELL SECTION,MATERIAL=RUBBER,ELSET=EALL
 1.0,
*MATERIAL,NAME=RUBBER
*ELASTIC
4064385.018,0.451566
*BOUNDARY
YZFIX, 2, 3
YFIX, 2, 2
XFIX, 1,1
*STEP,NLGEOM
 COMPRESS ELEMENTS
*STATIC
0.1,1.,0.1,0.1
*BOUNDARY
XMOVE, 1,1 ,-0.1
*NODE FILE, FREQ=99
U,
RF,
*EL FILE, FREQ=99
E,
S,
*END STEP
*STEP,NLGEOM
REMOVE MIDDLE ELEMENTS
*STATIC
1.,1.
*MODEL CHANGE,REMOVE,TYPE=ELEMENT
EREMOV,
*END STEP
*STEP,NLGEOM
*STATIC
1.,1.
*BOUNDARY
YZMOVE, 2,3, 0.0
*END STEP
*STEP,NLGEOM
 ADD ELEMENTS BACK IN
*STATIC
0.1,1.,0.1,0.1
*MODEL CHANGE,ADD,TYPE=ELEMENT
EREMOV,
*BOUNDARY,OP=NEW
YZFIX, 2,3
YFIX, 2, 2
XFIX, 1,1
XMOVE, 1,1 ,0.1
*END STEP