# TABLED4

Bulk Data Entry Defines the coefficients of a power series for use in generating frequency-dependent and time-dependent dynamic loads. Also contains parametric data for use with the table.

## Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
TABLED4 TID X1 X2 X3 X4
A0 A1 A2 A3 A4 A5 A6 A7
A8 etc. etc. etc. etc. etc. etc. etc.

## Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
TABLED4 28 0.0 1.0 0.0 100
2.91 -0.0329 6.51e-5 0.0 3.4-7 ENDT

## Definitions

Field Contents SI Unit Example
TID Table identification number.

No default (Integer > 0)

X# Table parameters.

No default (Real; X2 ≠ 0.0; X3 < X4)

A# Coefficients.

No default (Real)

1. At least one continuation entry must be specified.
2. The end of the table is indicated by the existence of ENDT in either of the two fields following the last entry. An error is detected if any continuations follow the entry containing the end-of-table flag ENDT.
3. TABLED4 uses the algorithm:(1)
$y=\sum _{i=0}^{N}{A}_{i}{\left(\frac{x-{X}_{1}}{{X}_{2}}\right)}^{i}$
Where,
$x$
Input to the table
$y$
Is returned
$N$
Number of pairs

Whenever $x , use X3 for $x$ ; whenever $x>X4$ , use X4 for $x$ . There are N + 1 entries in the table. There are no error returns from this table look-up procedure.

4. For frequency-dependent loads, x# is measured in cycles per unit time.
5. This card is represented as a load collector in HyperMesh.