*HEADING
 Raasch Challenge Problem, S4 elements.
 3 x 18 mesh
*RESTART,WRITE,FREQ=10
*NODE
*NODE
*NGEN,LINE=C,NSET=R14-B
*NGEN,LINE=C,NSET=R14-T
*NGEN,LINE=C,NSET=R46-B
*NGEN,LINE=C,NSET=R46-T
*NSET,NSET=BOT
 R14-B, R46-B
*NSET,NSET=TOP
 R14-T, R46-T
*NFILL,NSET=NALL
 BOT, TOP, 3, 1000
*NSET,NSET=WALL,GEN
*ELEMENT,TYPE=S4
*ELGEN,ELSET=EALL
*SHELL SECTION,MATERIAL=A1,ELSET=EALL
 2.,3
*MATERIAL,NAME=A1
*ELASTIC
 3300, 0.35
*BOUNDARY
 WALL,1,6
*NSET,NSET=TIP
*SURFACE, NAME=EDGE
 18, E2
 118, E2
 218, E2
*COUPLING, CONSTRAINT NAME=TIPLOAD, REF NODE=100001, 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,
*ENDSTEP