The MOTION function returns component comp of a force due to MOTION/id as calculated in the coordinate system of marker rm. If jflag is set to zero, the value returned is the force/torque acting on the I marker of the MOTION. If jflag is set to one, the value returned is that acting on the J marker. rm may be specified as zero if the results are desired in the global coordinate system.
MOTION (id, jflag, comp, rm)
| id | An integer specifying the identification number of the motion. |
| jflag |
An integer flag specifying the motion connectivity marker at which the forces and torques are computed. 0 = forces and moments at the I marker 1 = forces and moments at the J marker |
| comp |
An integer value that specifies the component of the motion force to be returned. 1 = Magnitude of the force 2 = x component of the force 3 = y component of the force 4 = z component of the force 5 = Magnitude of the torque 6 = x component of the torque 7 = y component of the torque 8 = z component of the torque |
| rm | The coordinate system in which the results are expressed. To return the results in the global coordinate system, set rm = 0. |
WZ(21,11)*MOTION(1,0,8,11)
This function calculates the instantaneous of MOTION/1 about the z-axis during a simulation (Power = force * velocity).