*HEADING
EC3FSHE2: EIGENVALUE ANALYSIS OF AN UNCONSTRAINED PATCH OF ELEMENTS  [C3D15H]
*PREPRINT,ECHO=YES,HISTORY=NO,MODEL=NO
*NODE
*NGEN
*****
*****
*****
*ELEMENT,TYPE=C3D15H,ELSET=ALL
*****
*SOLID SECTION,ELSET=ALL,MATERIAL=MATNAME
*MATERIAL,NAME=MATNAME
*ELASTIC
 1.E6,.25
*DENSITY
7.5E-4,
*STEP
*FREQUENCY, eigensolver=lanczos, SIM=NO
8, , ,-1.E7
*CONTROLS,PARAMETERS=FIELD
1.E-8, 1., 10000. , , 1.E-12
*END STEP
*STEP,NLGEOM
*STATIC
*DLOAD
12, P3, -10000.
22, P3, -10000.
42, P3, -10000.
52, P3, -10000.
61, P1, -10000.
62, P1, -10000.
71, P2, -10000.
72, P2, -10000.
*BOUNDARY
10,1,2
70,1,3
90,2,3
270,1
270,3
*EL PRINT,FREQ=0
*NODE PRINT
U,RF
*OUTPUT,FIELD
*NODE OUTPUT
U,RF
*END STEP
*STEP,NLGEOM
*FREQUENCY, eigensolver=lanczos, SIM=NO
8, , , -1.E+7
*EL PRINT,FREQ=0
*NODE PRINT,FREQ=0
*BOUNDARY,OP=NEW
*END STEP