*HEADING
: NAFEMS TEST FV52, [C3D20] H.O.E. MESH 
CONTINUUM Elements -- SIMPLY-SUPPORTED 'SOLID' SQUARE PLATE;    
*NODE
   1, 0., 0.,-0.5
   9,10., 0.,-0.5
 801, 0.,10.,-0.5
 809,10.,10.,-0.5
1001, 0., 0., 0.0
1009,10., 0., 0.0
1801, 0.,10., 0.0
1809,10.,10., 0.0
2001, 0., 0., 0.5
2009,10., 0., 0.5
2801, 0.,10., 0.5
2809,10.,10., 0.5
*NGEN,NSET=X1
1,9
*NGEN,NSET=X2
801,809
*NGEN,NSET=X3
2001,2009
*NGEN,NSET=X4
2801,2809
*NGEN,NSET=X5
1001,1009
*NGEN,NSET=X6
1801,1809
*NFILL,NSET=BASE
X1,X2,8,100
*NFILL,NSET=TOP
X3,X4,8,100
*NFILL,NSET=MID
X5,X6,8,100
*NSET,NSET=Y1,GEN
1,801,100
*NSET,NSET=Y2,GEN
9,809,100
**
*ELEMENT,TYPE=C3D20
1, 1,3,203,201,2001,2003,2203,2201,2,103,202,101,2002,2103,2202,2101,1001,1003,1203,1201
*ELGEN,ELSET=ALLE
1, 4,2,1, 4,200,10
*SOLID SECTION,ELSET=ALLE,MATERIAL=MAT
*MATERIAL,NAME=MAT
*ELASTIC
200.E9,0.3
*DENSITY
8000.,
**
*BOUNDARY
X1,3
X2,3
Y1,3
Y2,3
*STEP,PERT
*FREQUENCY,EIGENSOLVER=LANCZOS, SIM=NO
10,,,-1.
*MODAL FILE
*OUTPUT,HISTORY,FREQUENCY=1
*MODAL OUTPUT
*NODE PRINT,F=0
*EL PRINT,F=0
*ENDSTEP