*HEADING
FILE NAME:
FEATURES TESTED: THREE DIMENSIONAL INTERFACE
               : GAP CONDUCTIVITY
                 FIELD VARIABLE DEPENDENCY
*NODE,NSET=NALL
*NSET,NSET=MID
*NSET, NSET=TOP
*ELEMENT,TYPE=DC3D8,ELSET=MID
*ELEMENT,TYPE=DC3D8,ELSET=TOP
*ELSET, ELSET=SOLID
*surface, NAME=SURF1
TOP, S1
*surface, NAME=SURF2
MID,S2
*CONTACT PAIR, INTERACTION=GAPS
SURF1, SURF2
*SURFACE INTERACTION,NAME=GAPS
*GAP CONDUCTANCE,DEPENDENCIES=1
*SOLID SECTION,ELSET=SOLID,MATERIAL=SOLMAT
*AMPLITUDE, NAME=RAMP
0.0, 0.0, 0.0,1.0
*MATERIAL,NAME=SOLMAT
*CONDUCTIVITY
1.,
*STEP
*HEAT TRANSFER, STEADY STATE
*OUTPUT,FIELD
*NODE OUTPUT
NT,
RFL,
*FIELD, VARIABLE=1, AMP=RAMP
NALL, 1.5
*EL PRINT,FREQ=0
*NODE PRINT
 NT,
 RFL,
*BOUNDARY,OP=NEW
TOP,11,,100.
MID,11,,50.
*CONTACT PRINT
*OUTPUT,FIELD
*CONTACT OUTPUT,VARIABLE=PRESELECT
*END STEP