MOTNG

Bulk Data Entry

MOTNG – Constant Grid Point Motion for Multi-body Solution Sequence

Description

Defines a constant grid point motion.

Format

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
MOTNG	SID	G1	C1	G2	D	D0	V0

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
MOTNG	3	345	3		1.0

Field	Contents
SID	Load set identification number. (Integer > 0)
G1	Grid point identification number. (Integer > 0)
C1	Component number (Integer 1 through 18). The component refers to the direction and type of motion of the grid point G1 in the Basic Coordinate System (not the Local Coordinate System).
G2	Grid point identification number to define relative motion. (Integer > 0 or blank)
D	Scale factor. (Real)
D0	Initial displacement if motion data is of type velocity or acceleration, ignored otherwise.
V0	Initial velocity if motion data type is acceleration, ignored otherwise.

Comments

1.	If G1 and G2 are defined, the motion is a relative motion between the two grid points; if G2 is blank, absolute motion of G1 is defined.

2.	The types and directions of motion for the component numbers are given in the following table.

Component Number(s)	Type of Motion	Direction(s) of Motion
1, 2, and 3	Displacement	X, Y, Z
4, 5, and 6	Rotation	X, Y, Z
7, 8, and 9	Translational Velocity	X, Y, Z
10, 11, and 12	Angular Velocity	X, Y, Z
13, 14, and 15	Translational Acceleration	X, Y, Z
16, 17, and 18	Angular Acceleration	X, Y, Z

The component numbers and directions of motion are in the format: 1->X, 2->Y and 3->Z for Displacement and this format is followed for all the types in the table.

3.	This card is represented as a constraint load in HyperMesh.