*HEADING
 INDIAN  POINT  WITH SPRING SUPPORTS--THREE SUBSTRUCTURE MODEL
 FIRST SUBSTRUCTURE GENERATION WITH RAYLEIGH DAMPING
**
*NODE
*NGEN
*NGEN,LINE=C
*NSET,NSET=BOT
*ELEMENT,TYPE=B31
*ELGEN,ELSET=BEAMS
*MPC
BEAM,18,19
*ELSET,ELSET=SUP1
BEAMS,
*ELSET,ELSET=D8
*BEAM GENERAL SECTION,ELSET=D8 ,SECTION=GENERAL ,DENSITY= .0010691
12.763 , 105.317 , , 105.317 , 210.635
1. , , -1.
27.9E6 , 10.73E6
*DAMPING,ALPHA=1.5
*ELSET,ELSET=D8E
*BEAM GENERAL SECTION,ELSET=D8E,SECTION=GENERAL  ,DENSITY=.0010691
12.763 , 50.439 , , 50.439 , 210.635
1. , , -1.
27.9E6 , 10.73E6
*DAMPING,ALPHA=1.5
**
**
*STEP
*SUBSTRUCTURE GENERATE,TYPE=Z1,MASS MATRIX=YES,VISCOUS DAMPING MATRIX=YES,OVERWRITE
*RETAINED NODAL DOFS
*END STEP