*HEADING
**
** Thermal contact between aligned blocks in 2D.
**
*NODE,NSET=NB1
1, 0.,0.
2, 1.,0.
3, 2.,0.
4, 3.,0.
5, 4.,0.
11,0.,1.
12,1.,1.
13,2.,1.
14,3.,1.
15,4.,1.
*ELEMENT,ELSET=EB1,TYPE=CPS4RT
1,1,2,12,11
*ELGEN,ELSET=EB1
1,4,1,1
*NSET,NSET=FIX_N
1,2,3,4,5,111,112,113,114,115
*BOUNDARY
FIX_N,2,2
1,1,2
**
*NODE,NSET=NB2
101,0.,1.1
102,1.,1.1
103,2.,1.1
104,3.,1.1
105,4.,1.1
111,0.,2.1
112,1.,2.1
113,2.,2.1
114,3.,2.1
115,4.,2.1
*ELEMENT,ELSET=EB2,TYPE=CPS4RT
101,101,102,112,111
*ELGEN,ELSET=EB2
101,4,1,1
**
*ELSET,ELSET=EALL
EB1,EB2
**
*SOLID SECTION,ELSET=EALL,MATERIAL=MAT1
*MATERIAL,NAME=MAT1
*ELASTIC
1.E6,0.2
*DENSITY
1., 
*CONDUCTIVITY
10., 
*SPECIFIC HEAT
0.001, 
*PHYSICAL CONSTANTS, ABSOLUTE ZERO=-273.16,STEFAN=1.E-6
*SURFACE,TYPE=ELEMENT,NAME=SB1
EB1,
*SURFACE,TYPE=ELEMENT,NAME=SB2
EB2,
**
*NSET, NSET=QA_TEST_ALLNODES
NB1, NB2
**
*INITIAL CONDITIONS,TYPE=TEMP
NB1, 100.
NB2, 0.
**
*STEP
*DYNAMIC TEMPERATURE-DISPLACEMENT,EXPLICIT
,5.e-3
**
*CONTACT PAIR,INTERACTION=LINEAR, MECHANICAL CONSTRAINT=PENALTY, WEIGHT=1.0
SB1,SB2
*SURFACE INTERACTION,NAME=LINEAR,PADTHICKNESS=0.1
*GAP CONDUCTANCE
1.,0.
1.,0.1
**Gap conductance = k_interface / t_interface
*GAP HEAT GENERATION
0.,
*CONTACT DAMPING,DEFINITION=CRITICAL DAMPING FRACTION
0.,
*SURFACE BEHAVIOR,NO SEPARATION,PRESSURE-OVERCLOSURE=LINEAR
1.E6,
**Pressure-overclosure slope = E_interface / t_interface
*FRICTION,ROUGH,SHEAR TRACTION SLOPE=416666.7
**Shear traction slope = G_interface / t_interface
**                     = E_int / t_interface / (2*(1+nu_interface))
**
*FILE OUTPUT,NUM=1
*NODE FILE
U, NT
**
*OUTPUT, FIELD, NUMBER INTERVAL=1
*NODE OUTPUT, NSET=QA_TEST_ALLNODES
U, NT
*OUTPUT,FIELD,VARIABLE=PRESELECT
*OUTPUT,HISTORY,VARIABLE=PRESELECT,TIMEINT=0.005
*END STEP