*HEADING
: DIRECT ENFORCEMENT WITH LOAD CONTROL FOR ELASTIC-PLASTIC MATERIAL, 
          LOW INITIAL STIFFNESS [GK3D2]
*NODE,NSET=NALL
1,0.,0.,1.
2,0.,1.,1.
*ELEMENT,TYPE=GK3D2,ELSET=EINT
1,1,2
*GASKET SECTION,ELSET=EINT,BEHAVIOR=IS,ORIENTATION=LOCAL
,,,1.1,0.,1.,0.
*GASKET BEHAVIOR,NAME=IS
*GASKET ELASTICITY,COMPONENT=TRANSVERSE SHEAR,VARIABLE=FORCE
200.,
*GASKET THICKNESS BEHAVIOR,DIRECTION=LOADING,VARIABLE=FORCE
0.,0.
10.71,0.052
28.57,0.087
46.43,0.139
82.14,0.217
164.3,0.287
*GASKET THICKNESS BEHAVIOR,DIRECTION=UNLOADING,VARIABLE=FORCE
0.,0.087,0.087
14.28,0.122,0.087
46.43,0.139,0.087
0.,0.169,0.169
25.,0.20,0.169
82.14,0.217,0.169
0.,0.23,0.23
35.7,0.265,0.23
164.3,0.287,0.23
*GASKET CONTACT AREA
1.0,0.0
1.5,0.3
3.0,0.8
*EXPANSION
1.e-2,
*ORIENTATION,NAME=LOCAL,SYSTEM=RECT
1.0,0.0,0.0,0.0,0.0,-1.0
3,90.
*******************************************
*AMPLITUDE,NAME=HIST
0.0,0.0, 1.0,-20., 2.0,-35., 3.0,-0.1, 
4.0,-35., 5.0,-50., 6.0,-0., 7.0,-50., 
8.0,-65., 9.0,-0.1, 10.0,-65., 11.0,-80., 
12.0,-0.1, 13.0,-80., 14.0,-95., 15.0,-0.1, 
16.0,-95., 17.0,-110., 18.0,-0.1, 19.0,-110.,
20.0,-125., 21.0,-0.1, 22.0,-125., 23.0,-140., 
24.0,-0.1, 25.0,-140., 26.0,-155., 27.0,-0.1, 
28.0,-155., 29.0,-170., 30.0,-0.0
*BOUNDARY
1,1,3
*******************************************
*STEP,INC=10000
Test Thickness Behavior of Gasket
*STATIC
0.01,30.,1.e-5,0.01
*CONTROLS,PARAMETER=TIME INCREMENT

,0.25
*PRINT, FREQUENCY=100
*OUTPUT, HISTORY, FREQUENCY=100
*CONTROLS,PARAMETER=FIELD
5.e-5, 
*CLOAD,AMP=HIST
2,2,1.0
*NODE PRINT,FREQ=0
U,RF
*NODE FILE,FREQ=148
U,RF
*EL PRINT,FREQ=0
S, 
E, 
NE, 
EE, 
PE, 
EVOL, 
THE, 
TEMP, 
CS11, 
*EL FILE,FREQ=148
E, 
EE, 
NE, 
S, 
PE, 
CS11, 
EVOL, 
THE, 
*OUTPUT,FIELD,FREQ=148,VAR=PRE
*END STEP
*******************************************
**No Test of Membrane Behavior of Element
*******************************************
*STEP
Test Transverse Shear Stiffness of Element
*STATIC
*CONTROLS,RESET
*BOUNDARY,OP=NEW
1,1,3,0.0
2,2,2,0.0
*CLOAD,OP=NEW
2,1,5.0
2,3,5.0
*END STEP
*******************************************
*STEP
Free Thermal Expansion of Element
*STATIC
*BOUNDARY,OP=NEW
1,1,3,0.0
*CLOAD,OP=NEW
*TEMPERATURE,OP=NEW
NALL,100.
*END STEP
*******************************************