*HEADING
 SHALLOW CLAMPED ARCH LOADED WITH PUNCH, STABILIZED  
*NODE
1,0.,4.,0.,0.,1.
11,28.,0.,0.,.28,.96
100, 0., 9.
*NGEN,LINE=C
1,11,1,0,0.,-96.
*NSET,NSET=NENDS
1,11
*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
*ELSET,ELSET=ET1
1, 
*ELSET,ELSET=ET2,GENERATE
2,4,1
*rigid body,analytical surface=BSURF,REF NODE=100
*surface,TYPE=SEGMENTS,NAME=BSURF
START, 5.,9.
CIRCL, 0.,4., 0.,9.
*surface,NAME=ASURF
ET1,SPOS
*CONTACT PAIR,INTERACTION=DAMP
ASURF,BSURF
*SURFACE INTERACTION,NAME=DAMP
1., 
*surface,NAME=CSURF
ET2,SPOS
*CONTACT PAIR,INTERACTION=DAMP
CSURF,BSURF
*BOUNDARY
1,1
1,6
11,PINNED
100,1
100,6
*RESTART,WRITE,FREQUENCY=1
*STEP,NLGEOM
LOADING
*STATIC, STABILIZE,allsdtol
.05,1.,,.05
*BOUNDARY,OP=MOD
100,2,2,-9.0
*PRINT,RESIDUAL=NO
*MONITOR, NODE=1, DOF=2
*CONTACT PRINT,SLAVE=ASURF,FREQUENCY=5
*CONTACT PRINT,SLAVE=CSURF,FREQUENCY=5
*CONTACT FILE,SLAVE=ASURF
*CONTACT FILE,SLAVE=CSURF
*EL PRINT,FREQUENCY=5
S,E,
ELSD
*NODE PRINT,SUMMARY=NO,FREQUENCY=5
U,RF
VF
*ENERGY PRINT,FREQUENCY=5
*NODE FILE,FREQUENCY=5
VF
*EL FILE,FREQUENCY=1000
ELEN,
*output, history
*energy output, var=all
*END STEP