*HEADING
 NCR8BR8X: NAFEMS CREEP BENCHMKS 2D PLN STRESS--UNIAXIAL DISP (CPS8R)
 TEST 8(b) -- PRIMARY CREEP
*NODE
1,0.,0,
3,100.,0.
7,0.,100.
9,100.,100.
*NGEN,NSET=LEFT
1,7,3
*NGEN,NSET=RIGHT
3,9,3
*NFILL,NSET=ALL
LEFT,RIGHT,2,1
**
** ELEMENT DEFINITION
**
*ELEMENT,TYPE=CPS8R,ELSET=CREEP
1,1,3,9,7,2,6,8,4
*SOLID SECTION,ELSET=CREEP,MATERIAL=STEEL
*MATERIAL,NAME=STEEL
*ELASTIC
200.E3,0.3
** 
** TO CHANGE TO STRAIN HARDENING CHANGE LAW=STRAIN (BELOW)
**
*CREEP,LAW=TIME
1.5625E-14,5.,-0.5 
*BOUNDARY
LEFT,1,1
4,2,2
**
**
*STEP
  STEP 1 IMPOSING LINEAR ELASTIC DISPLACEMENT
*STATIC
.1,.1
*BOUNDARY
RIGHT,1,1,0.1
*EL PRINT
S,SINV
CE, 
*NODE PRINT
U, 
*END STEP
**  STEP 2 --- RELAXATION
*STEP,INC=200
 PRESCRIBED X-DISPLACEMENT = 0.1
*VISCO,CETOL=5.E-6
0.01,1000.,.001
*EL PRINT,FREQ=5
S,SINV
*OUTPUT,FIELD
*ELEMENT OUTPUT
S,
*NODE PRINT,FREQ=5
U, 
*END STEP