*HEADING
 NCR8CR8X: NAFEMS CREEP BENCHMKS 2D PLN STRESS--STEPPED LD (CPS8R)
 TEST 8(c) -- PRIMARY CREEP
*NODE
*NGEN,NSET=LEFT
*NGEN,NSET=RIGHT
*NFILL,NSET=ALL
LEFT,RIGHT,2,1
**
** ELEMENT DEFINITION
**
*ELEMENT,TYPE=CPS8R,ELSET=CREEP
*SOLID SECTION,ELSET=CREEP,MATERIAL=STEEL
*MATERIAL,NAME=STEEL
*ELASTIC
200.E3,0.3
** NOTE:  CONSTANT A MUST BE MULTIPLIED BY .5
**
** TO CHANGE TO STRAIN HARDENING LAW CHANGE LAW=STRAIN (BELOW)
**
*CREEP,LAW=STRAIN
1.5625E-14,5.,-.5
*BOUNDARY
LEFT,1,1
4,2,2
**
**
**
*STEP
 PRESCRIBED TENSILE STRESS
*STATIC
1.E-7,1.E-6
*DLOAD
1,P2,-200.
*EL PRINT,FREQ=10
S,SINV
*NODE PRINT
U,
*END STEP
**-------------------------- CREEP STEP
*STEP,INC=30
 CREEP STEP
*VISCO,CETOL=5.E-3
.001,100.
*EL PRINT,FREQ=10
CE,S
CENER,
*EL FILE
CE,
*OUTPUT,FIELD
*ELEMENT OUTPUT
CE,
*NODE PRINT,FREQ=10
U,
*END STEP
**-------------------------
** ELASTIC STEP
**-------------------------
*STEP
 CREEP STRESS=250 FROM 100 TO 200 HOURS
*STATIC
1.E-7,1.E-6
*DLOAD
1,P2,-250
*EL PRINT,FREQ=10
S,SINV
CE,
*NODE PRINT
U,
*END STEP
**----------------------- CREEP STEP
*STEP,INC=30
 CREEP STEP FROM 100 TO 200 HOURS
*VISCO,CETOL=5.E-3
.001,100.
*EL PRINT,FREQ=10
CE,S
CENER,
*EL FILE
CE,
*OUTPUT,FIELD
*ELEMENT OUTPUT
CE,
*NODE PRINT
U,COORD
*END STEP