DTI,SPECSEL

Bulk Data Entry Correlates spectra lines specified on TABLED1 entries with damping values.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
DTI SPECSEL ID TYPE TID1 DAMP1 TID2 DAMP2
TID3 DAMP3 etc etc etc etc etc etc
etc etc

Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
DTI SPECSEL 99 A 2 0.0 3 0.02
4 0.04

Definitions

Field Contents SI Unit Example
ID DTI,SPECSEL identification number. All DTI,SPECSEL cards must have unique identification numbers.

No default (Integer > 0)

TYPE Spectrum type.
A
Acceleration
V
Velocity
D
Displacement

No default

TID# A TABLED1 entry identification number that defines a line of the spectrum.

No default (Integer > 0)

DAMP# Damping value assigned to TID#.

No default (Real)

Comments

  1. The TID#, DAMP# pairs list the TABLED1 entry, which defines a line of the spectrum and the damping value assigned to it. The damping value is in the units of fraction of critical damping.
  2. If only a single TID# and DAMP# pair is specified, the reference curves for different damping values will not be extrapolated from the specified values.
  3. Refer to Response Spectrum Analysis in the User Guide for more details.