*HEADING
 ONE ELEMENT PLASTICITY TEST ON - UNIAXIAL LOAD [S4R]
*NODE
 1, 0.,0.
 5, 1.,0.
 21, 0.,1.
 25, 1.,1.
*NGEN,NSET=NX
 1,5,2
*NGEN,NSET=NY
 1,21,10
*NGEN
 21,25,2
 5,25,10
 3,23,10
*NSET,NSET=FIXR
 23,25,15
*NSET, GEN, NSET=NALL
 1,25,1
*ELEMENT,TYPE=S4R,ELSET=EALL
 1, 1,3,13,11
 2, 3,5,15,13
 3, 13,15,25,23
 4, 11,13,23,21
*SHELL SECTION,MATERIAL=A1,ELSET=EALL
 .001, 
*MATERIAL,NAME=A1
*ELASTIC
 1.E7, 0.3
*PLASTIC,HARDENING=KINEMATIC
 1.E4, 
 5.01E6,0.5
*EQUATION
 2, 
 25,1,1.,15,1,-1.
 2, 
 5,1,1.,15,1,-1.
*AMPLITUDE,NAME=PULL
.10 , 10000. ,  .40 , 25000. ,  .60 , 100. ,  .80 , 30000.
 1. , 100.
*BOUNDARY
 NALL, 4,6
 NX,2
 NY,1
*RESTART,WRITE,FREQUENCY=2
*STEP,INC=100
  PULL
*STATIC,DIRECT
  .1  ,  1.0
*CLOAD,AMPLITUDE=PULL
 15,1,1.E-3
*NODE PRINT,SUMMARY=NO
U1,U2,RF1,RF2
*EL PRINT,SUMMARY=NO
S,
SINV, 
E ,IE
PE, 
NFORC, 
*EL FILE
S, 
SINV,
E, IE
PE,PEP
NFORC,
*OUTPUT, HISTORY
*ELEMENT OUTPUT, ELSET=EALL
 S,
 E,
 PE,
*END STEP