*HEADING
 Raasch Challenge Problem, S4R elements.
 20 x 144 mesh
*RESTART,WRITE,FREQ=10
*NODE
  99996, 51.96152423, -16.,  0.
  99997, 51.96152423, -16., 20.
  99998, 0., 14,  0.
  99999, 0., 14, 20.
*NODE
     1,          0.,   0. ,   0.,  0.       , -1. , 0.
    17, 12.12435565,   7. ,   0.,  0.8660254, -0.5, 0.
   145, 97.96152423, -16. ,   0., -1.       ,  0. , 0.
 20001,          0.,   0., 20.,  0.       , -1. , 0.
 20017, 12.12435565,   7., 20.,  0.8660254, -0.5, 0.
 20145, 97.96152423, -16., 20., -1.       ,  0. , 0.
100001, 97.96152423, -16., 10.
*NGEN,LINE=C,NSET=R14-B
     1,    17, 1, 99998
*NGEN,LINE=C,NSET=R14-T
 20001, 20017, 1, 99999
*NGEN,LINE=C,NSET=R46-B
    17,   145, 1, 99996
*NGEN,LINE=C,NSET=R46-T
 20017, 20145, 1, 99997
*NSET,NSET=BOT
 R14-B, R46-B
*NSET,NSET=TOP
 R14-T, R46-T
*NFILL,NSET=NALL
 BOT, TOP, 20, 1000
*NSET,NSET=WALL,GEN
 1, 20001, 1000
*ELEMENT,TYPE=S4R
  1, 1, 2, 1002, 1001
*ELGEN,ELSET=EALL
 1,144,1,1, 20,1000,1000
*SHELL SECTION,MATERIAL=A1,ELSET=EALL
 2.,3
*MATERIAL,NAME=A1
*ELASTIC
 3300, 0.35
*BOUNDARY
 WALL,1,6
*NSET,NSET=TIP
   145, 1145, 2145, 3145, 4145, 5145
  6145, 7145, 8145, 9145, 10145
  11145, 12145, 13145, 14145, 15145, 16145
  17145, 18145, 19145, 20145
*NSET,NSET=NREF
 100001
*ELSET, ELSET=EDGE
 144,1144,2144,3144,4144,5144,6144,7144,8144,9144,10144,11144,
 12144,13144,14144,15144,16144,17144,18144,19144
*SURFACE, NAME=EDGE
 EDGE,E2
*COUPLING, CONSTRAINT NAME=TIPLOAD, REF NODE=NREF, SURFACE=EDGE
*DISTRIBUTING
*STEP,PERT
*STATIC
*CLOAD
100001,3,1.0
*NODE PRINT, NSET=TIP
 U,
*NODE FILE, NSET=TIP
 U,
*OUTPUT,FIELD
*NODE OUTPUT,NSET=TIP
U,
** *EL FILE, ELSET=TIPLOAD
** NFORC,
** *OUTPUT,FIELD
** *ELEMENT OUTPUT,ELSET=TIPLOAD
** NFORC,
*ENDSTEP