MOTNJC
Bulk Data Entry Defines a joint motion vs. time by specifying a curve.
Format
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| MOTNJC | SID | JID | MTYPE | CVID | INT | EID | DTYPE | ||
| D0 | V0 |
Example
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| MOTNJC | 3 | 345 | ROT | 2 | AKIMA | 99 |
Definitions
| Field | Contents | SI Unit Example |
|---|---|---|
| SID | Load set identification
number. (Integer > 0) |
|
| JID | Grid point identification
number. (Integer > 0) |
|
| MTYPE | TRANS or ROT, ignored for revolute and translational joints. | |
| CVID | Set identification number
of the MBCRV entry that gives the motion vs.
time. (Integer > 0) |
|
| INT | Interpolation type.
(Character) |
|
| EID | Set identification number
of the MBVAR for the
independent variable expression. Default = TIME (Integer ≥ 0 or blank) |
|
| DTYPE | Motion data type.
|
|
| 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
- Joint motion can only be applied to cylindrical joints (MTYPE = TRANS or ROT), revolute joints (MTYPE = ROT), and translational joints (MTYPE = TRANS).
- The MOTNJC Bulk Data Entry should be selected in the MOTION Subcase Information section, if it is to be included in the analysis.