*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=B21
10,10,20
*ELGEN,ELSET=BMS
10,10,10,10
*ELSET,ELSET=EP
50,60
*BEAM SECTION,SECTION=RECT,ELSET=BMS,MATERIAL=A1
1.4577244,14.
*MATERIAL,NAME= A1
*ELASTIC
30.E6, 
*DENSITY
0.0098, 
*BOUNDARY
BOUND,2,2,0.
10,1,1,0.
*SPECTRUM,TYPE=ACCELERATION,NAME=BIGGSACC
1545.60,5.,0.
1288.02,6.,0.
1267.32,6.098,0.
1104.02,7.,0.
1122.88,8.,0.
*NSET, NSET=ODB_NSET
BOUND, ODB_NSET
*STEP
*FREQUENCY,SIM,EIGENSOLVER=LANCZOS,normalization=mass
1, , 
*MODAL FILE
*END STEP
*STEP
  ACCELERATION SPECTRUM
*RESPONSE SPECTRUM,SUM=SRSS,COMP=SRSS
BIGGSACC,0.,1.,0.,0.5
*MODAL DAMPING
1,1,0.
*SELECT EIGENMODES, GENERATE
1, 1
*NODE PRINT
U,
*EL PRINT,ELSET=EP,POSITION=AVERAGED AT NODES
S,
SF,
*OUTPUT,FIELD
*NODE OUTPUT
U,
*ELEMENT OUTPUT,ELSET=EP
S,
SF,
*OUTPUT,HISTORY
*NODE OUTPUT, NSET=ODB_NSET
U,
*ELEMENT OUTPUT,ELSET=EP
S,
SF,
*END STEP