*HEADING
  TEST SUBSTRUCTURE MODAL DAMPING FOR MODAL DYNAMICS ANALYSIS
  SUBSTRUCTURE GENERATION FILE psupdmp2_gen1.inp SHOULD BE RUN FIRST
*RESTART,WRITE
*NODE
*ELEMENT,TYPE=Z01,ELSET=LEFT, FILE=psupdmp2_gen1
*ELEMENT,TYPE=Z01,ELSET=RIGHT, FILE=psupdmp2_gen1
*SUBSTRUCTURE PROPERTY,ELSET=LEFT
*SUBSTRUCTURE PROPERTY,ELSET=RIGHT
*MPC
SLIDER,3,1,2
*STEP
*FREQUENCY,EIGENSOLVER=LANCZOS
2    ,
*BOUNDARY
1,1,3
2,2,3
*SUBSTRUCTURE PATH,ENTER ELEMENT=1
*EL PRINT
S,E
*EL FILE
S,E
*NODE PRINT
U,
*NODE FILE
U,
*SUBSTRUCTURE PATH,LEAVE,ENTER ELEMENT=2
*EL PRINT
S,E
*EL FILE
S,E
*NODE PRINT
U,
*NODE FILE
U,
*SUBSTRUCTURE PATH,LEAVE
*END STEP
**
*STEP,PERTURBATION
*STATIC
*BOUNDARY
1,1,3
2,2,3
2,1,,1.
*PRINT,RESIDUAL=NO,FREQUENCY=5
*SUBSTRUCTURE PATH,ENTER ELEMENT=1
*EL FILE,FREQUENCY=25
S,E
*EL PRINT,FREQUENCY=25,SUMMARY=NO
S,E
*SUBSTRUCTURE PATH,LEAVE
*NODE FILE,FREQUENCY=5
U,
*NODE PRINT,FREQUENCY=5,SUMMARY=NO
U1,V1,A1,RF1
*END STEP
**
*STEP
*MODAL DYNAMIC,CONTINUE=YES
 .01, 2.5
*MODAL DAMPING,RAYLEIGH
*SELECT EIGENMODES, GENERATE
*END STEP