*HEADING
 :  SC8R MODEL CHANGE VERIFICATION; ELASTIC MATERIAL
*PREPRINT, MODEL=YES
*NODE
 1,
 11,5.
 401,,2.
 411,5.,2.
 1001, ,   , -1.0
 1011,5.,  , -1.0
 1401,,2.  , -1.0
 1411,5.,2., -1.0
*NGEN,NSET=BOT
 1,11,1
 1001,  1011
*NGEN,NSET=TOP
 401,411,1
 1401, 1411, 1
*NFILL,NSET=NALL
 BOT,TOP,4,100
*NSET, NSET=XFIX, GEN
 1, 401, 100
 1001, 1401, 100
*NSET, NSET=XMOVE, GEN
 11, 411, 100
 1011, 1411, 100
*NSET, NSET=YZMOVE, GEN
 204, 208, 1
 404, 408, 1
 1204, 1208,1
 1404, 1408,1
 1004, 1008, 1
*ELEMENT,TYPE=SC8R,ELSET=EALL
 1,1,3,1003,1001, 201, 203, 1203, 1201,
*ELGEN,ELSET=EALL
 1,5,2,1,2,200,5
*ELSET, ELSET=EREMOV
 2,3,4,7,8,9
*SHELL SECTION,MATERIAL=RUBBER,ELSET=EALL
 1.0,
*MATERIAL,NAME=RUBBER
*ELASTIC
 4064385.018,0.451566
**
**--------------------------------------------
**
*STEP,NLGEOM
 COMPRESS AND SHEAR ELEMENTS
*STATIC
 0.1,1.,0.1,0.1
*CONTROLS, PARAMETER=FIELD
 1.E-6, 1.E-4
*BOUNDARY
 XMOVE, 1,2,-0.1
 XMOVE, 3,3,0.
 XFIX, 1,3
*OUTPUT, FIELD, FREQ=99
*ELEMENT OUTPUT
 3,
 S,
 CTSHR,
*NODE OUTPUT
 U,
*NODE FILE, FREQ=99
 U, 
*EL PRINT, FREQ=99
 1,3,5
 CTSHR,
*END STEP
**
**--------------------------------------------
**
*STEP,NLGEOM
 REMOVE MIDDLE ELEMENTS
*STATIC
 1.,1.
*MODEL CHANGE,REMOVE,TYPE=ELEMENT
 EREMOV,
*BOUNDARY, FIXED
 XMOVE,1,3
 XFIX,1,3
*END STEP
**
**--------------------------------------------
**
*STEP,NLGEOM
 ADD ELEMENTS BACK IN
*STATIC
 0.1,1.,0.1,0.1
*MODEL CHANGE,ADD=WITH STRAIN,TYPE=ELEMENT
 EREMOV,
*END STEP
**
**--------------------------------------------
**
*STEP,NLGEOM
 MOVE ELEMENTS BACK
*STATIC
 0.1,1.,0.1,0.1
*BOUNDARY, OP=NEW
 XFIX, 1,3
 XMOVE,1,3
*END STEP