*HEADING
 THE WU-WITMER RING PROBLEM, ADAPTED FROM ABAQUS/Standard EX. 5D-2D-4D-1
**
**  Right side of the ring, rate-dependent plasticity
**
*NODE
 1,   .1, 2.937,0., 0., 1.,0.
10,3.037,    0.,0., 1., 0.,0.
19,   .1,-2.937,0., 0.,-1.,0.
*NGEN,LINE=C
 1,10,1,, .1,0.,0., 0.,0.,-1.
10,19,1,, .1,0.,0., 0.,0.,-1.
*ELEMENT,TYPE=PIPE21
1,1,2
*ELGEN,ELSET=RRING
1,18
*BEAM SECTION,SECTION=PIPE,ELSET=RRING,MATERIAL=A1
0.117385, 0.0117385
,,-1.
 ,
*MATERIAL,NAME=A1,SRATE FACTOR=0.1
*ELASTIC
1.05D+7,0.
*PLASTIC
4.28D+4, 
1.215D+5,.9925
*RATE DEPENDENT
 6500.,4.
*DENSITY
2.5D-4,
*NSET,NSET=CL
1,19
*NSET,NSET=NOUT,GENERATE
1,7,1
*ELSET,ELSET=ELOUT,GENERATE
1,7,1
*BOUNDARY
CL,1,1
CL,6,6
**
*RESTART,WRITE,NUMBER INTERVAL=2,TIMEMARKS=NO
**
*INITIAL CONDITIONS,TYPE=VELOCITY
1,2,-6853.
2,1,-1190.
2,2,-6749.
3,1,-2344.
3,2,-6440.
4,1,-3427.              
4,2,-5935.
5,1,-4405.
5,2,-5250.
6,1,-5250.
6,2,-4405.
7,1,-4451.
7,2,-2570.
**
*NSET, NSET=CHECK
1, 10, 19
** *ELSET,ELSET=QA_TEST_ELOUT
** ELOUT,
*NSET,NSET=QA_TEST_CHECK
CHECK,
**
*STEP
*DYNAMIC,EXPLICIT
,2.6E-3
*FILE OUTPUT,NUMBER INTERVAL=1,TIMEMARKS=YES
*EL FILE,ELSET=ELOUT
PEEQ,
*NODE FILE,NSET=CHECK
U,
*ENERGY FILE
*OUTPUT, FIELD, NUMBER INTERVAL=1, TIMEMARKS=YES
*NODE OUTPUT, NSET=QA_TEST_CHECK
UT,
*OUTPUT,HISTORY,VARIABLE=PRESELECT,TIMEINT=0.0026
*END STEP