*HEADING
: THERMALLY COUPLED CONTACT, FINITE SLIDING CONTACT WITH FRICTIONAL HEAT GENERATION, DEFORMABLE
*RESTART,WRITE,F=2
*NODE,NSET=ALL
   1, 1.0, 1.0
   7, 1.0, 7.0
  11, 2.0, 1.0
  17, 2.0, 7.0
 101, 2.0, 3.001
 105, 2.0, 4.999
 111, 3.0, 3.001
 115, 3.0, 4.999
1001, 1.5, 1.0
1007, 1.5, 7.0
1101, 2.5, 3.0
1105, 2.5, 5.0
*NGEN     
1,7,1
11,17,1
101,105,1
111,115,1
1001,1007,1
1101,1105,1
*NSET,NSET=BOT,GEN
1,7,1
*NSET,NSET=TOP,GEN
111,115,1
**
*ELEMENT,TYPE=CGAX8T,ELSET=DEAD
1,3,1,11,13,2,1001,12,1003
3,7,5,15,17,6,1005,16,1007
*SOLID SECTION,ELSET=DEAD,MATERIAL=DEAD
*MATERIAL,NAME=DEAD
*ELASTIC
30.E6,.3
*CONDUCTIVITY
10.000, 
*SPECIFIC HEAT
0.001, 
*DENSITY
1000., 
**
*ELEMENT,TYPE=CGAX8T,ELSET=ACTIVE
2,5,3,13,15,4,1003,14,1005
101,103,101,111,113,102,1101,112,1103
102,105,103,113,115,104,1103,114,1105
*SOLID SECTION,ELSET=ACTIVE,MATERIAL=ACTIVE
*MATERIAL,NAME=ACTIVE
*ELASTIC
30.E6,.3
*CONDUCTIVITY
10., 
*DENSITY
1000., 
*SPECIFIC HEAT
.001, 
**
*ELSET,ELSET=ETOP
102,101
*ELSET,ELSET=EBOT
3,2,1
*surface,NAME=ASURF
ETOP,S1
*surface,NAME=BSURF
EBOT,S3
*CONTACT PAIR,INTERACTION=ROUGH,SMOOTH=0.05
ASURF,BSURF
*SURFACE INTERACTION,NAME=ROUGH
*FRICTION,LAGRANGE
0.1, 
** clearance dependent gap conductance not present
*GAP CONDUCTANCE,PRESSURE
20.,100.
*GAP HEAT GENERATION
0.5, 
**
*NSET,NSET=CONST
111,112,114,115
*EQUATION
2, 
CONST,1,1.0,113,1,-1.0
2, 
CONST,2,1.0,113,2,-1.0
**
*AMPLITUDE, NAME=SLIDE, VALUE=RELATIVE, TIME=STEP
0.0, 0.0,  0.2, 1.0,  0.4, 0.0,  0.6, -1.0
0.8, 0.0,  1.0, 0.0
**
*INITIAL CONDITIONS,TYPE=TEMP
ALL,0.0
**
*STEP,INC=50,NLGEOM,AMP=RAMP,UNSYMM=YES
Step 1
*COUPLED TEMPERATURE,DELTMX=100.
10.,10.
*CONTROLS,PARAMETERS=FIELD
1.0E-6, 
*BOUNDARY
BOT,1,1
BOT,5,5
1,2,2
7,2,2
113,2,2
*CLOAD
113,1,-275.
*CONTACT PRINT,SECONDARY=ASURF
*OUTPUT,FIELD,FREQ=10
*CONTACT OUTPUT,VARIABLE=PRESELECT,SECONDARY=ASURF
*NODE PRINT
RF,NT11,RFL
*EL PRINT
S,
E,
TEMP, 
HFL,
NFLUX, 
*OUTPUT,FIELD,FREQ=10
*ELEMENT OUTPUT
S,
E,
TEMP,
NFLUX,
*OUTPUT,FIELD,FREQ=10
*NODE OUTPUT
NT,RFL
*PRINT,CONTACT=YES
*ENERGY PRINT,F=1
*END STEP
**
*STEP,INC=50,NLGEOM,AMP=RAMP,UNSYMM=YES
Step 2 - Generate 120 units of heat, 60 units absorbed
*COUPLED TEMPERATURE,DELTMX=100.
.05,1.,,.05
*BOUNDARY,AMPLITUDE=SLIDE
113, 2,2, 1.0607
113, 5,5, 0.5304
*END STEP
**
*STEP,INC=50,NLGEOM,AMP=RAMP,UNSYMM=YES
Step 3 - Go to steady state - TEMP=0.68
*COUPLED TEMPERATURE,DELTMX=100.
100.,500.
*END STEP