*HEADING
EC12AFE1: EIGENVALUE ANALYSIS OF AN UNCONSTRAINED 1-ELEMENT MESH  [AC1D2]
*NODE, Nset=ODB_NSET
  1,0
  5,0    ,0.1120
*NGEN,NSET=LEFT
  1,5
*NSET,NSET=BOT
  1,
*NSET,NSET=TOP
  3,
*ELEMENT,TYPE=AC1D2,ELSET=ALL
 1,  1,  3
*SOLID SECTION,MATERIAL=ALL,ELSET=ALL
 1,
*MATERIAL,NAME=ALL
*DENSITY
 1.,
*ACOUSTIC MEDIUM,BULK MODULUS
1.183E5, 
**
** Sets added by addodb
**
*Elset,Elset=ODB_ESET
ALL,
**
**
*Nset, Nset=ODB_NSET
ODB_NSET, LEFT, BOT, TOP
**
**
*STEP
*FREQUENCY, eigensolver=lanczos, SIM=NO
5, , ,-1.E7 
*OUTPUT,FIELD
*MODAL OUTPUT,VARIABLE=ALL
*OUTPUT,HISTORY
*MODAL OUTPUT,VARIABLE=ALL
*ENDSTEP