*HEADING
 :  CAX4H MODEL CHANGE VERIFICATION, HYPERELASTIC MATERIAL
*NODE
*NGEN,NSET=RHS
*NGEN,NSET=LHS
*NFILL,NSET=NALL
RHS,LHS,4,100
*NSET, NSET=YFIX, GEN
*NSET, NSET=XFIX
*NSET, NSET=XFIX2
*NSET, NSET=YMOVE, GEN
*NSET, NSET=XMOVE, GEN
*ELEMENT,TYPE=CAX4H,ELSET=EALL
*ELGEN,ELSET=EALL
*ELSET, ELSET=EREMOV
*SOLID SECTION,MATERIAL=RUBBER,ELSET=EALL
1.,
*MATERIAL,NAME=RUBBER
*HYPERELASTIC, N=1
56.00E4, 14.00E4, 1.43E-7
*BOUNDARY
YFIX, 2, 2
*STEP,NLGEOM
 COMPRESS ELEMENTS
*STATIC
0.1,1.,0.1,0.1
*BOUNDARY
YMOVE, 2,2 ,-0.1
*NODE PRINT,FREQ=999
U,
RF,
*EL PRINT,FREQ=999
E,
S,
*NODE FILE,FREQ=999
U, RF
*EL FILE,FREQ=999
E, NE, S
*END STEP
*STEP,NLGEOM
REMOVE MIDDLE ELEMENTS
*STATIC
1.,1.
*MODEL CHANGE,REMOVE,TYPE=ELEMENT
EREMOV,
*END STEP
*STEP,NLGEOM
 MOVE TOP EDGE DOWN
*STATIC
1.,1.
*BOUNDARY
XMOVE, 1,1, 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
YFIX, 2, 2
YMOVE, 2,2 ,0.1
*END STEP