*HEADING
ECA6SLE1: EIGENVALUE ANALYSIS OF AN UNCONSTRAINED 1-ELEMENT MESH  [CAX6MH]
*PREPRINT,ECHO=YES,HISTORY=NO,MODEL=NO
*NODE
*NGEN
*ELEMENT,TYPE=CAX6MH,ELSET=ELEMS
*SOLID SECTION,MATERIAL=A1, ELSET=ELEMS
*MATERIAL,NAME=A1
*ELASTIC,TYPE=ISOTROPIC
 3.E6,0.3
*DENSITY
7.5E-4,
*STEP
*FREQUENCY, eigensolver=lanczos, SIM=NO
5, , ,-1.E7
*MODAL FILE
*END STEP