Bulk Data Entry Defines a frequency-dependent dynamic load of the form: $P\left(f\right)=A\left(C\left(f\right)+iD\left(f\right)\right){e}^{i\left(\theta -2\pi f\tau \right)}$ for use in frequency response problems.

RLOAD1 (Form 1) can be used when the frequency-dependent dynamic load input is available in real/imaginary number format.

## Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
RLOAD1 SID EXCITEID DELAY DPHASE TC TD TYPE

## Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)

## Definitions

Field Contents SI Unit Example
SID Set identification number. Must be unique for all RLOAD1 and RLOAD2 entries.

No default (Integer > 0)

EXCITEID Identification number of the DAREA, SPCD, FORCEx, MOMENTx, PLOADx, RFORCE, ACCEL, ACCEL1, ACCEL2 or GRAV entry set that defines A.

No default (Integer > 0)

DELAY Defines time delay $\tau$ . If it is a non-zero integer, it represents the identification number of a DELAY Bulk Data Entry that defines $\tau$ . If it is Real, then it directly defines the value of $\tau$ that will be used for all degrees-of-freedom that are excited by this dynamic load entry.

Default = 0 (Integer ≥ 0, or Real)

DPHASE Defines phase $\theta$ in degrees. If it is a non-zero integer, it represents the identification number of a DPHASE Bulk Data Entry that defines $\theta$ . If it is Real, then it directly defines the value of $\theta$ that will be used for all degrees-of-freedom that are excited by this dynamic load entry.

Default = 0 (Integer ≥ 0, or Real)

TC
Integer ≥ 0
Set identification number of the TABLED1, TABLED2, TABLED3, TABLED4 or TABLEG entry that gives $C\left(f\right)$ .
Real
This real value is used for $C\left(f\right)$ for all frequencies.2
Blank

Default = 0 if TD is non-zero.

TD
Integer ≥ 0
Set identification number of the TABLED1, TABLED2, TABLED3, TABLED4 or TABLEG entry that gives $D\left(f\right)$ .
Real
This real value is used for $D\left(f\right)$ for all frequencies. 2
Blank

Default = 0 if TC is non-zero.

TYPE Identifies the type of the dynamic excitation.

Default = 0 (See Comment 4)

2. If any DELAY, DPHASE, TC, or TD fields are blank or zero, the corresponding $\tau$ , $\theta$ , $C\left(f\right)$ , or $D\left(f\right)$ will be zero. Either TC or TD may be blank or zero, but not both.