s MODEL DESCRIBED IN NORMAL MODES EXAMPLE INCLUDE 'plate. bdf' $ss EIGENVALUE EX尘 RACTION PARAN尘ERs EIGRL,100,10.,2000 s SPECIFY MODAL DAMPING TABDMP1, 100, CRIT, 03,10.,.03,ENDT s FIRST LOADING RLOAD2,100,300,,,310 TABLED1, 310, +,10.,1.,1000.,1.,ENDT ss UNIT PRESSURE LOAD TO PLATE LsEQ,100,300,400 PLOAD2,400,1.,1,THRU,40 S SECOND LOADING RLOAD2,200,600, 310 S POINT LOAD AT TIP CENTER DAREA,600,11,3,1 S SPECIFY FREQUENCY STEPS FREQ1,100,20 S SPECIFY SPECTRAL DENSITY RANDPS,100,1,1,1.,0.,100 RANDPS,100,2,2,1.,0.,200$ $ MODEL DESCRIBED IN NORMAL MODES EXAMPLE $ INCLUDE ’plate.bdf’ $ $ EIGENVALUE EXTRACTION PARAMETERS $ EIGRL, 100, 10., 2000. $ $ SPECIFY MODAL DAMPING $ TABDMP1, 100, CRIT, +, 0., .03, 10., .03, ENDT $ $ FIRST LOADING $ RLOAD2, 100, 300, , , 310 $ TABLED1, 310, +, 10., 1., 1000., 1., ENDT $ $ UNIT PRESSURE LOAD TO PLATE $ LSEQ, 100, 300, 400 $ PLOAD2, 400, 1., 1, THRU, 40 $ $ SECOND LOADING $ RLOAD2, 200, 600, , , 310 $ $ POINT LOAD AT TIP CENTER $ DAREA, 600, 11, 3, 1. $ $ SPECIFY FREQUENCY STEPS $ FREQ1, 100, 20., 20., 49 $ $ SPECIFY SPECTRAL DENSITY $ RANDPS, 100, 1, 1, 1., 0., 100 RANDPS, 100, 2, 2, 1., 0., 200