$ GET EXTERNAL SUPERELEMENT DATA BASE ASSIGN MASTER='alter2g1.MASTER' RESTART version=2,keep $ FROM CBAR3G (NORMAL MODES) $ MODAL, FREQ RESP USING EXTERNAL SUPERELEMENT SOL 111 TIME 10 DIAG 8,56 $ $ ATTACH MATRICES FOR EXTERNAL SUPERELEMENT 10, GET SYSTEM MODES $ AND RUN MODAL TRANSIENT $ INCLUDE 'alter9ga.v707' CEND TITLE = MODAL TRANSIENT FOR SUPERELEMENT MODEL CBAR9G $ $SET 99 = 0,10 $SELG = 99 $SELR = 99 LOADSET = 10 echo=none $disp = all disp(phase, sort2) = all SUBCASE = 1 $ IDENTICAL TO CBAR2d SUPER = 10 METHOD = 1 $ SET 999 = 5 OLOAD = 999 PARAM,SEBFORC,1 $ K2GG=KAAEXT M2GG=MAAEXT B2GG = BAAEXT $ DAMPING IF USED $SPC = 1 SUBCASE 5 LABEL = RES STR - SOLVE PROBLEM FOR transient solution SDAMP = 100 freq = 5 SPC = 1 DLOAD = 10 METHOD = 1 DISP = ALL $ $ PLOT RESULTS $ OUTPUT(XYPLOT) XAXIS = YES YAXIS = YES XGRID = YES YGRID = YES XTITLE = TIME YTITLE = Z D I S P O F G R I D 5 XYPLOT DISP /5(T3) SEPLOT 10 XAXIS = YES YAXIS = YES XGRID = YES YGRID = YES XTITLE = TIME YTITLE = Z D I S P O F G R I D 8 XYPLOT DISP /8(T3) BEGIN BULK param,post,0 rload1,10,10,,,100 tabled1,100 ,0.,1.,1000.,0.,endt $ SID DAREA DELAY TYPE T1 T2 F PHASE $TLOAD2 10 10 0. 5. 10. +T12 $$ C B $T12 -1. $ SID N(1) DT(1) NO(1) freq4,5,1.,10.,.01,5 $TSTEP 5 600 .001 5 $ DAREA,10,2,3,.0001 $ TABDMP1 100 CRIT +TDAMP +TDAMP 0. .01 200. .01 ENDT $ $ FORCE CARD AND LSEQ TO TELL NASTRAN TO GENERATE LOADS $ FOR "EXTERNAL" SUPERELEMENT 10 $ FORCE,12,8,,2.,0.,0.,-1. $ LSEQ,10,10,12 $ ENDDATA