$ $(It should be noted that the order of the 'SUP ORT dof used on this s entry is the MSC/NASTRAN internal sort. If only one GRid point is used s this is no problem, but if more than one GRId point is used s then PARAM, USETPRT, 1 should be used to obtain the internal order DTI SPECSEL O DTI SPECSEL 1A 20.03.01+SP1 +SP14.02 $ s This table defines the relationship between the input tables $(from the spectrum creation run)and the spectra sets. For example, s record 1 defines a spectra set representing acceleration spectra s containing spectrum 2 for 0% of critical damping, spectrum 3 for 1% of s critical damping and spectrum 4 for 2% of critical damping s The program will interpolate between the spectra if a mode has a s damping value other than those defined in the table $ S GRID Component(XYPLOT terminology) 0.000000E+00 TABLED1 2 53.15641.0.0012631.5.0028422..005056 2.5.0079053..0113933.5.0155244..020303 4.5.0257385..0318395.5.0386156..046073 6.5.0542197..0630527.5.0725698..082766 100.53.87229ENDT s Table representing the input spectra$ $ (It should be noted that the order of the ’SUPORT’ dof used on this $ entry is the MSC/NASTRAN internal sort. If only one GRID point is used, $ this is no problem, but if more than one GRID point is used, $ then PARAM,USETPRT,1 should be used to obtain the internal order) $ DTI SPECSEL 0 DTI SPECSEL 1 A 2 0.0 3 .01 +SP1 +SP1 4 .02 $ $ This table defines the relationship between the input tables $ (from the spectrum creation run) and the spectra sets. For example, $ record 1 defines a spectra set representing acceleration spectra, $ containing spectrum 2 for 0% of critical damping, spectrum 3 for 1% of $ critical damping, and spectrum 4 for 2% of critical damping. $ The program will interpolate between the spectra if a mode has a $ damping value other than those defined in the table. $ $ GRID Component (XYPLOT terminology) $ACCE 0 1 3 1 $ 0.000000E+00 TABLED1 2 .5 3.156-4 1.0 .001263 1.5 .002842 2. .005056 2.5 .007905 3. .011393 3.5 .015524 4. .020303 4.5 .025738 5. .031839 5.5 .038615 6. .046073 6.5 .054219 7. .063052 7.5 .072569 8. .082766 . . . 100.5 3.87229 ENDT $ Table representing the input spectra