*HEADING
EC3ASLE1: EIGENVALUE ANALYSIS OF AN UNCONSTRAINED 1-ELEMENT MESH  [C3D10MH]
*PREPRINT,ECHO=YES,HISTORY=YES,MODEL=YES
*NODE
  1, 0.0, 0.0, 0.0
  2, 2.0, 0.0, 0.0
  3, 2.0, 2.0, 0.0
  4, 0.0, 2.0, 0.0
  5, 0.0, 0.0, 1.0
  6, 2.0, 0.0, 1.0
  7, 2.0, 2.0, 1.0
  8, 0.0, 2.0, 1.0
  9, 1.0, 0.0, 0.0
 10, 2.0, 1.0, 0.0
 11, 1.0, 2.0, 0.0
 12, 0.0, 1.0, 0.0
 13, 1.0, 0.0, 1.0
 14, 2.0, 1.0, 1.0
 15, 1.0, 2.0, 1.0
 16, 0.0, 1.0, 1.0
 17, 0.0, 0.0, 0.5
 18, 2.0, 0.0, 0.5
 19, 2.0, 2.0, 0.5
 20, 0.0, 2.0, 0.5
 21, 1.0, 1.0, 0.0
 22, 1.0, 1.0, 1.0
 23, 1.0, 0.0, 0.5
 24, 2.0, 1.0, 0.5
 25, 1.0, 2.0, 0.5
 26, 0.0, 1.0, 0.5
*ELEMENT,TYPE=C3D10MH, ELSET=EALL
 1, 1,2,3,6,9,10,21,23,18,24
*SOLID SECTION,MATERIAL=A1, ELSET=EALL
*MATERIAL,NAME=A1
*ELASTIC
 3.E6,0.3
*DENSITY
7.5E-4, 
*STEP
*FREQUENCY, eigensolver=lanczos, SIM=NO
9, , ,-1.E7
*END STEP