*HEADING
  SUBSTRUCTURE GENERATION FILE FOR psupdmp3_gen1.inp
*NODE
1,0.,0.
3,5.,0.
*ELEMENT,TYPE=T3D2,ELSET=TRUSS
1,1,3
*SOLID SECTION,ELSET=TRUSS,MATERIAL=MTRUSS
1., 
*MATERIAL,NAME=MTRUSS
*ELASTIC
1E7, 
*DENSITY
317., 
*DAMPING,ALPHA=5.00472,BETA=3.59248E-3
*STEP
*SUBSTRUCTURE GENERATE,TYPE=Z01,MASS MATRIX=YES,OVERWRITE
*RETAINED NODAL DOFS
1,
3,
*END STEP