*HEADING
: DIRECT ENFORCEMENT WITH LOAD CONTROL FOR ELASTIC MATERIAL 
          WITH DAMAGE, INITIAL GAP [GKPE4]
*NODE,NSET=NALL
1,
2,1.
3,0.,1.
4,1.,1.
*ELEMENT,TYPE=GKPE4,ELSET=EINT
1,1,2,3,4
*GASKET SECTION,ELSET=EINT,BEHAVIOR=IS
,0.1
*GASKET BEHAVIOR,NAME=IS
*GASKET ELASTICITY,COMPONENT=MEMBRANE
2000.,0.2
*GASKET ELASTICITY,COMPONENT=TRANSVERSE SHEAR
200.,
*GASKET THICKNESS BEHAVIOR,TYPE=DAMAGE,DIRECTION=LOADING
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,TYPE=DAMAGE,DIRECTION=UNLOADING
0.,0.,0.139
14.28,0.122,0.139
46.43,0.139,0.139
0.,0.,0.217
12.,0.17,0.217
40.,0.21,0.217
82.14,0.217,0.217
0.,0.0,0.287
11.0,0.24,0.287
164.3,0.287,0.287
*EXPANSION
1.e-2,
*******************************************
*AMPLITUDE,NAME=HIST
 0.,  0.000,  1., -5.000,  2.,  -9.000,  3., -0.100,
 4., -9.000,  5.,-12.000,  6., -0.100,  7.,-12.000,
 8.,-45.000,  9.,-48.000, 10.,-30.000, 11., -0.100, 
12.,-48.000, 13.,-82.500, 14., -0.100, 15.,-82.500,
16.,-160.000,17., -0.001, 18.,-160.0, 19.,-200. 
*BOUNDARY
1,1,2
2,1,2
*******************************************
*STEP,INC=10000
Test Thickness Behavior of Gasket
*STATIC
0.01,19.,,0.01
*PRINT, FREQ=100
*CLOAD,AMP=HIST
3,2,.5
4,2,.5
*NODE PRINT,FREQ=0
U,RF
*EL PRINT,FREQ=0
S, 
E, 
NE, 
EE, 
EVOL, 
THE, 
TEMP, 
*OUTPUT, FIELD, FREQ=148
*NODE OUTPUT
U, 
RF, 
*ELEMENT OUTPUT
E, 
EE, 
NE, 
S, 
EVOL, 
THE, 
*END STEP
*******************************************
*STEP
Test Membrane Behavior of Element
*STATIC
*BOUNDARY,OP=NEW
1,1,2,0.0
2,2,2,0.0
3,1,2,0.0
4,2,2,0.0
*CLOAD,OP=NEW
2,1,0.5
4,1,0.5
*END STEP
*******************************************
*STEP
Test Transverse Shear Stiffness of Element
*STATIC
*BOUNDARY,OP=NEW
1,1,2,0.0
3,2,2,0.0
2,1,2,0.0
4,2,2,0.0
*CLOAD,OP=NEW
3,1,.5
4,1,.5
*END STEP
*******************************************
*STEP
Thermal Expansion of Element
*STATIC
*CLOAD,OP=NEW
*BOUNDARY,OP=NEW
1,1,2
2,2
*TEMPERATURE,OP=NEW
NALL,100.
*OUTPUT, FIELD
*NODE OUTPUT
RF, 
*ELEMENT OUTPUT
S, 
EVOL, 
THE, 
*END STEP
*******************************************