Format

FX(I, J, K)

Description

The FX function computes the X-component of the resultant translational force acting at marker I (obtained by vector summation), due to all applied forces and constraints that act between markers I and J, as resolved in the coordinate system of marker K. If the J marker is not specified, then FX computes the X-component of all the resultant forces at marker I.  The first argument, marker I, must be specified.  The second and third arguments, markers J and K, are optional.

Example

<Post_Request

    comment             = "bush-frc"

    id                  = "70000045"

    type                = "EXPRESSION"

    expr1               = "NULL"

    expr2               = "FX(30301010,30301011,30301011)"

    expr3               = "FY(30301010,30301011,30301011)"

    expr4               = "FZ(30301010,30301011,30301011)"

    expr5               = "NULL"

    expr6               = "TX(30301010,30301011,30301011)"

    expr7               = "TY(30301010,30301011,30301011)"

    expr8               = "TZ(30301010,30301011,30301011)"

/>

Arguments

I

The marker at which the resultant force is to be computed.

J

The second marker such that all forces between markers I and J are to be summed up at the marker I location.

K

The resultant force vector is resolved in the coordinate system of the K marker.  This argument is optional.  If omitted, it defaults to the ground coordinate system.  To specify a K marker without specifying a J marker, set the J marker to zero.