*HEADING
 SHALLOW CLAMPED ARCH WITH DISPLACED MIDPOINT 
*NODE
1,0.,4.,0.,0.,1.
11,28.,0.,0.,.28,.96
*NGEN,LINE=C
1,11,1,0,0.,-96.
*ELEMENT,TYPE=B21
1,1,2
*ELGEN,ELSET=ARCH
1,10
*BEAM SECTION,SECTION=RECT,ELSET=ARCH,MATERIAL=A1
1.,2.
*MATERIAL,NAME=A1
*ELASTIC
1.E7,.25
*BOUNDARY
1,1
1,6
11,PINNED
*NSET,NSET=NENDS
1,11
*RESTART,WRITE,FREQUENCY=2
*STEP,NLGEOM
LOADING
*STATIC
.05,1., ,.05
*BOUNDARY,OP=MOD
1, 2,2, -9.0
*PRINT,RESIDUAL=NO
*MONITOR,NODE=1,DOF=2
*EL PRINT,FREQUENCY=0
*NODE PRINT,SUMMARY=NO,FREQUENCY=2
U,RF
*NODE FILE,NSET=NENDS
U,RF
*END STEP