*HEADING
 TEST CLEARANCE DEPENDENT GAP RADIATION (CPE4RT)
*PHYSICAL CONSTANTS, ABSOLUTE ZERO=-460., STEFAN=1.E-8      
*NODE,NSET=BAR
1,0.
2,.5
3,1.
101,0.,1.
102,0.5,1.
103,1.0,1.
*NSET,NSET=LEFT
1,101
*ELEMENT,TYPE=CPE4RT,ELSET=ROD
1,1,2,102,101
2,2,3,103,102
*SOLID SECTION,ELSET=ROD,MATERIAL=A1
1., 
*MATERIAL,NAME=A1
*ELASTIC
1.E5, 
*EXPANSION
1.E-5, 
*CONDUCTIVITY
1., 
*DENSITY
1., 
*SPECIFIC HEAT
1., 
*NODE, NSET=WALL
9999,2.,0.5
*ELEMENT, TYPE=HEATCAP, ELSET=HCAP
9999,9999
*HEATCAP, ELSET=HCAP
1.0,
*SURFACE,NAME=WALL,TYPE=S
START,1.01,-0.1
LINE,1.01,1.1
*SURFACE,TYPE=ELEMENT,NAME=RIGHT
2,S2
*RIGID BODY, REFNODE=9999, ISOTHERMAL=YES, ANALYTICAL SURFACE=WALL
*AMPLITUDE,NAME=RAMP,DEFINITION=SMOOTH
0,0,3,1
*STEP
*DYNAMIC TEMPERATURE-DISPLACEMENT, EXPLICIT
 ,5.
*CONTACT PAIR,INTERACTION=GAP,WEIGHT=0.0
RIGHT,WALL
*SURFACE INTERACTION,NAME=GAP
*GAP RADIATION
1.0,1.0
1.,0.
0.,0.02
*BOUNDARY,TYPE=VELOCITY
BAR,2
LEFT,1
WALL,1,2,0.0
WALL,6,6,0.0
*BOUNDARY,AMP=RAMP
LEFT,11,11,400.
WALL,11,11,200.
*OUTPUT,FIELD,NUM=1
*ELEMENT OUTPUT,ELSET=ROD
S,LE
*OUTPUT, HISTORY,FREQ=20
*NODE OUTPUT, NSET=BAR
U,NT
** *NODE OUTPUT,NSET=WALL
** U, 
*ENERGY OUTPUT,ELSET=ROD
ALLIE,ALLKE,ALLAE
**
** Output requests for qa testing
**
*NSET,NSET=QA_TEST
BAR, 9999
*OUTPUT,FIELD,NUM=1
*NODE OUTPUT,NSET=QA_TEST
U, NT
*OUTPUT,HISTORY,VAR=PRESELECT,TIME INTERVAL=1.25
*FILE OUTPUT,NUM=1
*NODE FILE
U, 
NT, 
*END STEP