*HEADING
EC3RSFEC: EIGENVALUE ANALYSIS OF AN UNCONSTRAINED 1-ELEMENT MESH  [C3D27]
*PREPRINT,ECHO=YES,HISTORY=NO,MODEL=NO
*NODE
*NGEN,NSET=ALL
*ELEMENT,TYPE=C3D27, ELSET=EALL
*SOLID SECTION,MATERIAL=A1, ELSET=EALL
*MATERIAL,NAME=A1
*ELASTIC
 3.E6,0.3
*DENSITY
7.5E-4,
*STEP
*FREQUENCY, eigensolver=lanczos
8, , ,-1.E7
*OUTPUT,FIELD
*MODAL OUTPUT
*END STEP