/LOAD

Block Format Keyword

/LOAD - Apply a Loading

Description

Apply a loading to a node group.

Format

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
/LOAD/Type/load_ID/unit_ID
load_title
fct_IDT	Dir	frame_ID	sens_ID	grnod_ID	Ivar	Ascalex		Fscaley

Field	Contents	SI Unit Example
load_ID	Load identifier (Integer, maximum 10 digits)
Type	= CENTRI: Load is computed according to the rotational velocity around an axis.
unit_ID	Optional unit identifier (Integer, maximum 10 digits)
load_title	Load title (Character, maximum 100 characters)
fct_IDT	Time function identifier, giving the rotational velocity versus time. (Integer)
Dir	Direction of rotation (input XX, YY or ZZ) (Text)
frame_ID	Frame identifier (Integer) = 0: rotation is expressed in global reference system. ≠ 0: rotation is expressed with respect to the frame.
sens_ID	Sensor identifier (Integer)
grnod_ID	Node group to which the load is applied (Integer)
Ivar	Flag to disregard variation of velocity with respect to time, for the calculation of the force Default = 1 (Integer) = 1: Variation of velocity is not taken into account. = 2: Variation of velocity is taken into account.
Ascalex	Abscissa scale factor Default = 1.0 (Real)
Fscaley	Ordinate scale factor Default = 1.0 (Real)

1.	If Type = CENTRI, a force is computed corresponding to a body rotational velocity around the direction Dir of the global reference system, if frame_ID=0; or the reference system defined by the frame. if frame_ID ≠ 0.

2.	This option is not a kinematic condition (velocity of the nodes is not specified).

3.	If frame_ID = 0, the force applied to the node of mass m, at location M is computed as:

load_force_eq

If Ivar = 1:

load_Ivar_eq is not taken into account.

4.	If frame_ID ≠ 0, the force applied to a node is computed as:

Driving force:

load_driving_force_eq

Coriolis force:

Relative force:

load_relative_eq

If Ivar = 1:

load_relative_force is not taken into account in relative force.

Where, R is the global reference system, R’ is the reference system defined by the frame, A is the origin of the frame, M is a point of the defined group of node, is the rotational velocity of the frame with respect to the global reference system, and is the rotational velocity defined by the time function.

/LOAD

/LOAD

/LOAD

Description

Format

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