# MOTNGC

Bulk Data Entry Defines a grid point motion versus time by specifying a curve.

## Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
MOTNGC SID G1 C1 G2 CVID INT EID
D0 V0

## Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
MOTNGC 3 345 3   1 AKIMA 2

## Definitions

Field Contents SI Unit Example

(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)

CVID Set identification number of the MBCRV entry that gives the motion versus time.

(Integer > 0)

INT Interpolation type.
AKIMA (Default)
CUBIC
LINEAR

(Character)

EID Set identification number of the MBVAR for the independent variable expression.

Default = TIME (Integer ≥ 0 or blank)

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.

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) Motion Type 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.