*HEADING
: SIMPLE CONTACT TEST, COUPLED TEMPERATURE-DISPLACEMENT  [GAPUNIT]
*NODE
1,5.,
2,10.,
3,10.0000001
4,15.
*NSET,NSET=NALL
1,2,3,4
*ELEMENT,TYPE=T3D2T,ELSET=SOLID
1,1,2
3,3,4
*ELEMENT,TYPE=GAPUNIT,ELSET=GAPS
2,2,3
*SOLID SECTION,ELSET=SOLID,MATERIAL=SOLMAT
0.5, 
*MATERIAL,NAME=SOLMAT
*ELASTIC
30.E6,0.3
*EXPANSION
10.E-6, 
*CONDUCTIVITY
1., 
*GAP,ELSET=GAPS
0.0000001,1.,0.,0.,0.5
**
*STEP,NLGEOM
*COUPLED TEMPERATURE-DISPLACEMENT,STEADY STATE
*OUTPUT,HISTORY,FREQUENCY=1
*ENERGY OUTPUT,VARIABLE=PRESELECT
*OUTPUT,FIELD
*ELEMENT OUTPUT,ELSET=SOLID
S,
E,
EE,
*OUTPUT,FIELD
*ELEMENT OUTPUT
S,
E,
TEMP,
*NODE OUTPUT
RF,
*ENERGY PRINT
*EL PRINT
 S, E, EE,
 TEMP,
*NODE PRINT
 U,RF ,NT
*BOUNDARY
NALL,2,3
1,1,3
4,1,3
NALL,11,11,500.
*END STEP
*STEP,PERTURBATION
*STATIC
*BOUNDARY
NALL,2,3
1,1,1
4,1,1,0.05
*OUTPUT,HISTORY,FREQUENCY=1
*ENERGY OUTPUT,VARIABLE=PRESELECT
*OUTPUT,FIELD
*ELEMENT OUTPUT
S,
E,
TEMP,
*OUTPUT,FIELD
*NODE OUTPUT
RF,
*ENERGY PRINT
*EL PRINT,SUM=NO
 S,     E,
 temp,
*NODE PRINT,SUM=NO
 U, RF,
*END STEP