*HEADING
 : NAFEMS CREEP BENCHMKS 2D PLN STRAIN--BIAXIAL (DBL) LD (CPE8R)
 TEST 5(a) -- 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
*NSET,NSET=BOTTOM,GENERATE
1,3
**
** ELEMENT DEFINITION
**
*ELEMENT,TYPE=CPE8R,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=TIME
3.125E-14,5.
*BOUNDARY
LEFT,1,1
BOTTOM,2,2
**
**
**
*STEP
 PRESCRIBED TENSILE STRESS
*STATIC
1.E-7,1.E-6
*DLOAD
1,P2,-200.
1,P3,-100.
*EL PRINT,FREQ=10
CE, 
S, 
SINV, 
*CONTROLS, PARAMETERS=FIELD

,0.0,
*NODE PRINT,FREQ=10
U, 
*END STEP
*STEP,INC=50
 STRESS RELAXATION
*VISCO,CETOL=5.E-4
1.E-6,1000.,
*EL PRINT
CE, 
S, 
CENER, 
*OUTPUT,FIELD
*ELEMENT OUTPUT
CE,
*NODE PRINT
U, 
*END STEP