*HEADING
 FILE NAME : 
 FEATURES TESTED : THREE DIMENTIONAL HEAT TRANSFER INTERFACE
                   GAP CONDUCTANCE
                   GAP RADIATION
*RESTART,WRITE
*NODE
 1, 10.0,  0.0, 0.5
 3, 11.0,  0.0, 0.5
 7, 10.0, -1.0, 0.5
 9, 11.0, -1.0, 0.5
*NGEN,NSET=SIDE_01
1,7,3
*NGEN,NSET=SIDE_02
3,9,3
*NFILL,NSET=TOP_NODE
SIDE_01,SIDE_02,2,1
*NCOPY,CHANGE NUMBER=10,OLD SET=TOP_NODE,NEW SET=BOT_NOD1,SHIFT
0.0,0.0,-1.0

*NSET,NSET=TOP_TEMP
1,3
7,9
*NSET,NSET=BOT_TEMP
11,13
17,19
*NSET,NSET=NOUT
TOP_TEMP,BOT_TEMP,
*ELEMENT,TYPE=S8RT,ELSET=TOP_EL
1,7,9,3,1,8,6,2,4
*ELGEN,ELSET=EALL
1,2,10,1
*ELSET,ELSET=BOTT_EL
 2, 
*SHELL SECTION,ELSET=TOP_EL,MATERIAL=SOLMAT
1.0,5
*SHELL SECTION,ELSET=BOTT_EL,MATERIAL=SOLMAT
1.0,5
*MATERIAL,NAME=SOLMAT
*ELASTIC,TYPE=ISO
30.0E6, 0.3
*EXPANSION,TYPE=ISO,ZERO=0.0
10.0E-06,
*CONDUCTIVITY,TYPE=ISO
43.0, 
*DENSITY
7700.0, 
*SPECIFIC HEAT
600.0, 
*PHYSICAL CONSTANTS,STEFANB=5.6697E-08,ABSOLUTE ZERO=-460.0
*surface,NAME=SURF_01
TOP_EL,SNEG
*surface,NAME=SURF_02
BOTT_EL,SPOS
*CONTACT PAIR,INTERACTION=GAP,SMALL SLIDING,NOTHICK
SURF_01,SURF_02
*SURFACE INTERACTION,NAME=GAP
*GAP CONDUCTANCE
1.0,0.0
1.0,1.0
*GAP RADIATION
3.4664e-2, 3.4664e-2
1.,0.
1.,1.
** converted from old data: 1.E-9, 1.E-9
**
** Apply temperatures to the top and bottom of the shells
**
*STEP
*COUPLED TEMPERATURE-DISPLACEMENT, STEADY STATE
 1., 1.
*NODE FILE,NSET=NOUT,F=10
NT,RFL
*EL FILE,ELSET=EALL,F=10
S,THE
*ENERGY FILE
*NODE PRINT,F=10
*EL PRINT,F=10
*BOUNDARY,OP=NEW
TOP_NODE,1,6
BOT_NOD1,1,6
TOP_TEMP,15,15,1000.0
BOT_TEMP,11,11,50.0
*PRINT,CONTACT=YES
*CONTACT PRINT
HFL,HFLA,HTL,HTLA
*CONTACT FILE
HFL,HFLA,HTL,HTLA
*END STEP