*HEADING
: SIMPLE CONTACT TEST, 3D FINITE SLIDING, NO FRICTION
*AMPLITUDE,NAME=CONSTA
0,0.048,1,0.048
*AMPLITUDE,NAME=CONSTB
0,0.060,1,0.060
*AMPLITUDE,NAME=CONSTC
0,-0.064,1,-0.064
*ELEMENT,TYPE=C3D8H,ELSET=BASE
*ELEMENT,TYPE=C3D8,ELSET=SLIDER
*ELSET,ELSET=SOLID
BASE,SLIDER
*NODE,NSET=NALL
*NGEN,NSET=NALL
*NSET,NSET=BOTTOM,G
*NSET,NSET=TOP,G
*NMAP,NSET=NALL,TYPE=RECTANGULAR
*TRANSFORM,NSET=NALL
*SOLID SECTION, ELSET=SOLID,MATERIAL=STEEL
*surface, NAME=SBASE
BASE, S5
*surface, NAME=SSLIDE
SLIDER, S3
*SURFACE INTERACTION, NAME=NOFRIC
*CONTACT PAIR, INTERACTION=NOFRIC
SSLIDE, SBASE
*MATERIAL,NAME=STEEL
*ELASTIC
 30.E6,0.3
*DENSITY
 10.0,
*BOUNDARY
1,1
11,1
101,1
111,1
BOTTOM,2,3
TOP,3
*STEP,NLGEOM,INC=20,UNSYMM=YES
 FIRST COMPRESS
*STATIC,DIRECT
0.67,1.
*CONTROLS,PARAMETERS=FIELD
1.0E-6,
*BOUNDARY
TOP,1
TOP,2,2,-.15
*PRINT,CONTACT=YES
*CONTACT PRINT
*CONTACT FILE
*EL PRINT
S,
E,
*NODE PRINT
U,
RF,
*EL FILE,FREQ=5
S,
E,
*NODE FILE,FREQ=5
U,RF
*END STEP
*STEP,INC=30,UNSYMM=YES
SLIDE TO THE RIGHT
*STATIC
.2,1.
*BOUNDARY
TOP,2,2,-.15
TOP,1,1,4.
*END STEP
**
** step 3: Steady state dynamics, direct analysis
**
*STEP
*STEADY STATE DYNAMICS,DIRECT
20,100,5
*BOUNDARY
 BOTTOM,2,3
 1,1,1
 11,1,1
 101,1,1
 111,1,1
 TOP,1,1
 TOP,2,2,0.1
 TOP,3,3
*NODE FILE
U,
RF,
*EL FILE
E,
S,
*CONTACT FILE
*END STEP
**
** step 4: frequency extraction
**
*STEP
*FREQUENCY,EIGENSOLVER=LANCZOS, SIM=NO
36,,,
*BOUNDARY
 BOTTOM,2,3
 1,1,1
 11,1,1
 101,1,1
 111,1,1
*BOUNDARY,BASE NAME=MOVA
 TOP,1,1
*BOUNDARY,BASE NAME=MOVB
 TOP,2,2
*BOUNDARY,BASE NAME=MOVC
 TOP,3,3
*MODAL FILE
*CONTACT FILE,FREQ=0
*NODE FILE,F=0
*EL FILE,F=0
*NODE PRINT,F=0
*EL PRINT,F=0
*END STEP
**
** step 5: Steady state dynamics, subspace projection
**
*STEP
*STEADY STATE DYNAMICS,SUBSPACE PROJECTION,INTERVAL=RANGE
20,100,5
*BASE MOTION,BASE NAME=MOVA,AMPLITUDE=CONSTA,DOF=1,TYPE=DISPLACEMENT
*BASE MOTION,BASE NAME=MOVB,AMPLITUDE=CONSTB,DOF=2,TYPE=DISPLACEMENT
*BASE MOTION,BASE NAME=MOVC,AMPLITUDE=CONSTC,DOF=3,TYPE=DISPLACEMENT
*NODE FILE
TU,
RF,
*EL FILE
E,
S,
*CONTACT FILE
*END STEP