SOLUTION
  title 'Modal analysis of a test fixture model'
  eigen
    nmodes 12
END

PARAMETERS
  # Conversion between 'weight' and 'mass'.  E.g. inverse of gravity acceleration
  # Use this command to input density and other mass related quantities in 'pounds'
  # rather than 'slinches'
  wtmass=0.00259
  # This will scale eigen displacement output to be proportional to the model size for simple
  # visualization.  By default eigen displacement is mass-normalized.
  eigen_norm=visualization
END

FILE
   geometry_file 'fixture.exo'
END

BOUNDARY
  # Fix X, Y, and Z displacements, as well as RX, RY, RZ rotations
  nodeset 1
    fixed
END

OUTPUTS
  displacement
END

ECHO
  # Output block-by-block mass to the ".rslt" file
  mass block
END

BLOCK 1
   # fixture
   material 1
END

BLOCK 2
  # Block 2 is a set of rigid bars
  rbar
END

BLOCK 3
  # Concentrated mass sphere element
  ConMass
  # Mass and rotational inertia of the element
  Mass 1.0e7
  Ixx  1.0e8
  Iyy  1.0e8
  Izz  1.0e8
  # Offset of the mass location vs. the nodal location,
  # can alter the mass properties
  Offset= 0.0 0.0 0.0
END

MATERIAL 1
   # fixture - Titanium
   density=0.16
   E=1.6e+07    # Young's Modulus
   nu=0.3       # Poisson's Ratio
END

GDSW
  # Tighter than default solver tolerance for more accurate solution
  solver_tol 1.0e-10
END