The FX function returns the x-component of the net translational force acting at marker i, as computed 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 force, unless a force is an action-only type force. To return the x-component of the action-only forces acting at marker i, you should omit specification of marker j or specify it to be zero. Note that you can not specify marker k and omit marker j. In this case, you should specify marker j to be zero.
Format
FX(i[,j][,k])
Arguments
i | An integer that specifies the identifier of the marker at which the magnitude of the net force 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 it if you are interested in action-only forces. |
k | An integer that specifies the identifier of a marker (coordinate system) in which the x-component of the force is to be returned. k defaults to the global coordinate system when it is not specified. |
Examples
VARIABLE/1, FUNCTION=FX(23,0,432)
A user-defined state variable is specified by this VARIABLE statement. Its value is FX(23,0,432). This is the x-component of the sum of all the action-only forces acting at Marker 23 as computed in the coordinate system of Marker 32.
See other
Generic force available.