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TY

The TY measure returns the y-component of the net translational torque acting on marker i, represented in the coordinate system of marker k. All force and constraint elements acting between markers i and j are included in the calculation of the torque. If j is not specified, TY measures the sum of all force and constraint elements acting on marker i. If k not specified or if k=0 the torque is represented in the GROUND coordinate system. To specify k without specifying j use j=0.

Format

TY(i[,j][,k])

Arguments

i	An integer that specifies the identifier of the marker at which the magnitude of the net torque is to be calculated.
j	A second integer that specifies a marker identifier. All forces acting between the [i,j] pair are to be included in the calculation. Set j = 0 or do not specify if you are interested in all forces acting on marker i.
k	An integer that specifies the identifier of a marker (coordinate system) in which the y-component of the torque is to be returned. k defaults to the global coordinate system when it is not specified.

Examples

JOINT/1, REVOLUTE, I=32, J=44
MOTION/1, ROTATION, JOINT=1, FUNCTION=10*TIME
VARIABLE/31, FUNCTION=TY(32,44)

In this example a revolute joint and motion (through the joint) act between Marker 32 and 44. A new state variable VARIABLE/31 is defined to have the y-component of the sum of all torques acting between markers 32 and 44 as computed in the global coordinate system. Since joint 1 and motion 1 are defined between markers 32 and 44, their reaction torque will be included in the computation of TY().