*HEADING
: THERMALLY COUPLED CONTACT, FINITE SLIDING CONTACT WITH FRICTIONAL HEAT GENERATION, DEFORMABLE
*PREPRINT,CONTACT=NO
*RESTART,WRITE,F=2
*NODE,NSET=ALL
  1, 1., 1.
  7, 1., 7.
 11, 2., 1.
 17, 2., 7.
101, 2., 3.
105, 2., 5.
111, 3., 3.
115, 3., 5.
*NGEN
1,7,1
11,17,1
101,105,1
111,115,1
*NSET,NSET=BOT,GEN
1,7,1
*NSET,NSET=TOP,GEN
111,115,1
**
*ELEMENT,TYPE=CAX4RT,ELSET=DEAD
1,3,1,11,13
3,7,5,15,17
*SOLID SECTION,ELSET=DEAD,MATERIAL=DEAD
*MATERIAL,NAME=DEAD
*ELASTIC
30.E6,.3
*CONDUCTIVITY
10.000, 
*SPECIFIC HEAT
0.001, 
*DENSITY
1000., 
**
*ELEMENT,TYPE=CAX4RT,ELSET=ACTIVE
2,5,3,13,15
101,103,101,111,113
102,105,103,113,115
*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
111,115
*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.
*SOLUTION TECHNIQUE,TYPE=SEPARATED
*CONTROLS,PARAMETERS=FIELD,FIELD=TEMPERATURE
5.0E-3, 
*BOUNDARY
BOT,1,1
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, 1.5
*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