*HEADING
 : NAFEMS CREEP BENCHMKS 2D PLN STRESS--STEPPED LD (CPS8R)
 TEST 12(c) -- PRIMARY-SECONDARY 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
*CREEP,LAW=USER
**
**--------------------------------------------
**
*BOUNDARY
LEFT,1,1
4,2,2
**
**
**
*STEP
 PRESCRIBED TENSILE STRESS
*STATIC
1.E-7,1.E-6
*DLOAD
1,P2,-100.
*EL PRINT,FREQ=10,SUMMARY=NO
S,SINV
*NODE PRINT,FREQ=10,SUMMARY=NO
U,COORD
*END STEP
*STEP,INC=500
 CREEP STEP
*VISCO,CETOL=1.E-1,CREEP=EXPLICIT
1.E-2,10000.,1.E-7
*EL PRINT
CE,S
CENER, 
*NODE PRINT,FREQ=10,SUMMARY=NO
U, 
*END STEP
**----------------
*STEP
 PRESTCRIBED TENSILE STREES
*STATIC
1.E-7,1.E-6
*DLOAD
1,P2,-110
*EL PRINT,SUMMARY=NO
S,SINV
*NODE PRINT,SUMMARY=NO 
U,COORD
*END STEP
**
**------------------ CREEP STEP
*STEP,INC=700
 CREEP STEP2
*VISCO,CETOL=1.E-1,CREEP=EXPLICIT
1.E-2,10000.,1.E-7
*EL PRINT
CE,S
CENER, 
*NODE PRINT 
U,COORD
*END STEP