MOTNJC

Bulk Data Entry Defines a joint motion versus 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 versus time.

(Integer > 0)
INT Interpolation type.
LINEAR
CUBIC
AKIMA (Default)

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

Default = TIME (Integer ≥ 0 or blank)
DTYPE Motion data type.
DIS
VEL
ACC
blank
Means displacement motion.
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. Joint motion can only be applied to cylindrical joints (MTYPE = TRANS or ROT), revolute joints (MTYPE = ROT), and translational joints (MTYPE = TRANS).
  2. The MOTNJC Bulk Data Entry should be selected in the MOTION Subcase Information section, if it is to be included in the analysis.