*HEADING
**
** ABAQUS INPUT FILE UPGRADE: This input file was upgraded from
** version 5.8 or later to version 6.3 with 0 warning(s) and 0 
** error(s).
** 
**
 RESPONSE SPECTRUM ANALYSIS OF A SIMPLY SUPPORTED BEAM     
*NODE,NSET=BOUND
10,0.
110,240.
*NGEN, NSET=ODB_NSET
10,110,10
*ELEMENT,TYPE=B23
10,10,20
*ELGEN,ELSET=BMS
10,10,10,10
*ELSET,ELSET=EP
50,60
*BEAM GENERAL SECTION,SECTION=GENERAL,ELSET=BMS,DENSITY=9.8E-3
20.40814,333.333,0.,333.333,
0.,0.,-1.
30.E6, 
*BOUNDARY
BOUND,2,2,0.
10,1,1,0.
*SPECTRUM,TYPE=DISPLACEMENT,NAME=BIGGS
0.7830,5.,0.
0.4531,6.,0.
0.4316,6.098,0.
0.2854,7.,0.
0.2222,8.,0.
*NSET, NSET=ODB_NSET
BOUND, ODB_NSET
*STEP
*FREQUENCY, eigensolver=lanczos
1, , 
*MODAL FILE
*END STEP
*STEP
   DISPLACEMENT SPECTRUM
*RESPONSE SPECTRUM,SUM=SRSS,COMP=SRSS
BIGGS,0.,1.,0.,1.
*modal damping, modal=direct
1,1,0.
*select eigenmodes, generate
1, 1
*EL PRINT,ELSET=EP,POSITION=AVERAGED AT NODES
SM1,SK1 
*NODE FILE
U,CF,RF
COORD, 
*EL FILE,ELSET=EP,POSITION=AVERAGED AT NODES
SF,
*OUTPUT,HISTORY
*NODE OUTPUT,NSET=ODB_NSET
U,CF,RF
COORD, 
*ELEMENT OUTPUT,ELSET=EP
SM1,SK1
*END STEP