*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).
** 
**
 VERIFICATION EXAMPLE FOR RESPONSE SPECTRUM                     
*RESTART,WRITE,FREQUENCY=999
*NODE
 1,0
 4,30
*NGEN,NSET=ALL
 1,4
*NSET,NSET=TIP
 4,
*NSET,NSET=BOT
 1, 
*ELEMENT,TYPE=T3D2
 1,1,2
*ELGEN,ELSET=ALL
 1,3
** introduce small mass to stabilize QA results
*element, type=mass, elset=emass
101,2
*mass, elset=emass
1.e-6
*SOLID SECTION,MATERIAL=ALL,ELSET=ALL
2. ,
*MATERIAL,NAME=ALL
*ELASTIC
 5,
*DENSITY
 0.011111, 
*BOUNDARY
 BOT,ENCASTRE
 ALL,2,3
*SPECTRUM,TYPE=DISPLACEMENT,NAME=TEST
 0,    0, 0.0
 2, 0.01, 0.0
 2, 1000, 0.0
 0,    0, 0.1
 1, 0.01, 0.1
 1, 1000, 0.1
*STEP
*FREQUENCY, eigensolver=subspace,SIM=NO
 3,
*EL PRINT
*MODAL FILE
*END STEP
*STEP
 DISPLACEMENT SPECTRUM
*RESPONSE SPECTRUM,SUM=ABS,COMP=ALGEBRAIC
TEST,1.,0.,0.,1.
*modal damping, modal=direct
 1,3,0.02
*select eigenmodes, generate
1, 3
*EL PRINT
S,E
*NODE FILE
U,V,A,RF
*OUTPUT,FIELD
*NODE OUTPUT
U,V,A,RF
*NODE PRINT
U,V,A
RF,
*ENERGY PRINT
*MODAL PRINT
GU,GV,GA
SNE,KE,T
*MODAL FILE
GU,GV,GA
SNE,KE,T
*OUTPUT,HISTORY,FREQUENCY=1
*MODAL OUTPUT
GU,GV,GA
SNE,KE,T
*END STEP
*STEP
 DISPLACEMENT SPECTRUM (2)
*RESPONSE SPECTRUM,SUM=SRSS,COMP=ALGEBRAIC
TEST,1.,0.,0.,1.
*modal damping, modal=direct
 1,3,0.02
*select eigenmodes, generate
1, 3
*END STEP