Bulk Data Entry Defines a time-dependent load or enforced motion for use in explicit dynamic analysis.

(1)
$f\left(t\right)=A\cdot C\cdot F\left(t/B\right)$

## Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
NLOAD1 SID EXCITEID SENSID TYPE TID B C CID
TSTART TEND

## Example

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

## Definitions

Field Contents SI Unit Example

(Integer > 0)

EXCITEID SID number of DAREA, SPCD, GRAV or static load set data entry that defines A. 2 3 5

(Integer > 0)

SENSID Sensor identification number. Load application is activated once the referenced sensor is activated.

(Integer > 0)

TYPE Defines the dynamic excitation type. 2 3

Default = 0 (Integer, character or blank)

TID TABLEDi entry identification number defining the load history F(t).

(Integer > 0)

B Scale factor of the time in f(t).

Default = 1.0 (Real > 0)

C Scale factor for the function value in f(t).

Default = 1.0 (Real)

CID Coordinate system identification number defining a frame in which the imposed velocity is defined. Applies only for TYPE = 2, V, VE, VEL, or VELO. Only CORD1R and CORD2R systems are allowed.

(Integer > 0 or blank)

TSTART Start time. 4

Default = 0.0 (Real ≥ 0.0)

TEND End time.

Default = 1030 (Real > TSTART)

1. Time-dependent load sets must be selected with the Subcase Information command NLOAD = SID. It can only be selected in Explicit Dynamic Analysis subcases which are defined by an ANALYSIS = EXPDYN Subcase Informaton Entry.
2. The type of the dynamic excitation is specified by TYPE according to:
TYPE
TYPE of Dynamic Excitation
0, L, LO, LOA, or LOAD
Applied load (force, moment, pressure, GRAV).
(Default)
1, D, DI, DIS, or DISP
Enforced displacement using SPC/SPCD data.
2, V, VE, VEL, or VELO
Enforced velocity using SPC/SPCD data.
3, A, AC, ACC, or ACCE
Enforced acceleration using SPC/SPCD data.
3. The TYPE also determines the manner in which EXCITEID is used by the program as:
• Excitation specified by TYPE is applied load. The EXCITEID may reference DAREA, or (and) static load set entries. If EXCITEID references both DAREA and static load set, the two loads will be super-imposed.
• Excitation specified by TYPE is enforced motion. The EXCITEID must reference SPCD entries.
4. TSTART and TEND are only considered for enforced displacement, velocity, and acceleration. The continuation line is optional.
5. If a GRAV Bulk Data Entry is referenced in the EXCITEID field, the TYPE field should be set to LOAD.
6. This card is represented as a load collector in HyperMesh.