*HEADING
 : IDENTICAL, PARALLEL DIRECTLY OPPOSED RECTANGES
 TWO ELEMENTS TOTAL, *MOTION USED TO VARY DISTANCE
 TEMPERATURES IN CELCIUS
*NODE,NSET=BASE1
1,0.,0.,-5.
2,5.,0.,-5.
3,5.,8.,-5.
4,0.,8.,-5.
*NCOPY,CHANGE NUMBER=4,OLD SET=BASE1,SHIFT,NEW SET=BASE1
0.,0.,5.

*NCOPY,CHANGE NUMBER=10,OLD SET=BASE1,SHIFT
0.,0.,6.

*NSET,NSET=BASE2,GEN
15,18
*ELEMENT,TYPE=DC3D8,ELSET=EALL
1,1,2,3,4,5,6,7,8
2,11,12,13,14,15,16,17,18
*SOLID SECTION,ELSET=EALL,MATERIAL=ALU
*MATERIAL,NAME=ALU
*CONDUCTIVITY
237., 
*DENSITY
2702., 
*SPECIFIC HEAT
903., 
*surface,NAME=SURF1,PROPERTY=PROP1
1,S2
2,S1
*CAVITY DEFINITION,NAME=CAV1,AMB=-173.16
SURF1, 
*SURFACE PROPERTY,NAME=PROP1
*EMISSIVITY
0.76, 
*PHYSICAL CONSTANTS,STEFANB=5.67E-08,ABSOLUTE ZERO=-273.16
**
*RESTART,WRITE,FREQ=5
*STEP,INC=20
 DISTANCE = 1.0
*HEAT TRANSFER,STEADY STATE
1.,1.
*CONTROLS, PARAMETERS=FIELD, FIELD=TEMPERATURE
1.0E-4, 
*RADIATION VIEWFACTOR,REFLECTION=NO
*BOUNDARY
BASE1,11,,726.84
BASE2,11,,26.84
*NODE PRINT
NT,MOT
*NODE FILE
NT,MOT
*RADIATION PRINT
RADFL,RADFLA,RADTL,RADTLA,VFTOT,FTEMP
*RADIATION FILE
RADFL,RADFLA,RADTL,RADTLA,VFTOT,FTEMP
*END STEP
*STEP,INC=20
 DISTANCE = 3.0
*HEAT TRANSFER,STEADY STATE
1.,1.
*RADIATION VIEWFACTOR,REFLECTION=NO,NSET=BASE1,MDISP=1.
*MOTION,USER
BASE1,3,3,-2.
*END STEP
*STEP,INC=20
 DISTANCE = 6.0
*HEAT TRANSFER,STEADY STATE
1.,1.
*RADIATION VIEWFACTOR,REFLECTION=NO,NSET=BASE1,MDISP=1.
*MOTION,TYPE=DISPLACEMENT
BASE1,3,3,-5.
*END STEP
*STEP,INC=20
 DISTANCE = 10.0
*HEAT TRANSFER,STEADY STATE
1.,1.
*RADIATION VIEWFACTOR,REFLECTION=NO,NSET=BASE1,MDISP=1.
*MOTION
BASE1,3,3,-9.
*END STEP
*STEP,INC=20
 DISTANCE = 15.0
*HEAT TRANSFER,STEADY STATE
1.,1.
*RADIATION VIEWFACTOR,REFLECTION=NO,NSET=BASE1,MDISP=1.
*MOTION
BASE1,3,3,-14.
*END STEP
*STEP,INC=20
 DISTANCE = 25.0
*HEAT TRANSFER,STEADY STATE
1.,1.
*RADIATION VIEWFACTOR,REFLECTION=NO,NSET=BASE1,MDISP=1.
*MOTION
BASE1,3,3,-24.
*END STEP
*STEP,INC=20
 DISTANCE = 35.0
*HEAT TRANSFER,STEADY STATE
1.,1.
*RADIATION VIEWFACTOR,REFLECTION=NO,NSET=BASE1,MDISP=1.
*MOTION
BASE1,3,3,-34.
*END STEP
*STEP,INC=20
 DISTANCE = 40.0
*HEAT TRANSFER,STEADY STATE
1.,1.
*RADIATION VIEWFACTOR,REFLECTION=NO,NSET=BASE1,MDISP=1.
*MOTION
BASE1,3,3,-39.
*END STEP